Why does my car start when it's cold but not hot?

The cold starting issue could possibly be caused by a failing fuel pump or even a temperature sensor.

Heat increases resistance in electrical circuits, and it is possible that once the fuel pump has been running for a while, high resistance causes it to slow or stop.

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Why does my car not start when it's hot?

It is very common for heat to cause the starter motor and bad connection problems.Electricity doesn't like heat.Heat creates high resistance in an electrical circuit.Most commonly this is a starter issue, but other parts of the primary circuit can have bad connections.

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When the car is cold it starts but when it gets hot it turns off?

Sounds like you have radiator trouble. Have you checked the fluid level in the radiator?

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Why does a engine run good cold but not hot?

well is it a newer car or what um it is prol your intake temperature sencer

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Why does my lawnmower not start when hot?

Lawn mower won't start oil on spark plug? The most common reason for oil on a mower spark plug is too much oil in the engine, but there are other possible causes: Mower turned on its side.Head gasket failure.

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Why does my car start but when you give it gas it will not move?

Take your foot off the gas and apply it to the break. Then shift from park to either reverse or drive. That usually works.

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Why does my Subaru not accelerate when its cold?

if older car could be carborator,choke pull off

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Why does a motor make a tapping noise when its cold but not when its warm?

sounds like your oil is wrong viscocity and causes the hydraulic lifters to tap until oil thins enuff to work the lifters. if changing oil doesnt help you have a worn lifter

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91 delta 88 starts when cold - but want when it gets hot?

Check to see if your starter is getting too hot after running for a while. When the starter is hot it requires much more current. This may be caused by heat shield being removed and or a hole in the exhaust system near the starter.

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Why does car run fine when engine is cold but dies when engine is hot?

Chances are that you have an air leak or fault in the vacuum side of your intake that causes you engine to run lean when the choke or enrichment circuit is disengaged. Or you have a problem with your normal fuel supply circuit. -Check your vacuum lines and vacuum operated devices for leaks. -Chec...

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Why won't my car start when its hot?

The most common reason why a hot engine will not start is because the problem is related to fuel.When your new car engine is too hot, fuel cannot circulate well, due to the way vapor obstructs its workings and therefore the engine just will not start, as it should.Then go and get a high quality e...

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Why does my car start but not stay running?

This issue could be caused by an insufficient amount of fuel reaching the combustion chamber.For fuel issues, start by checking the fuel pressure.With too much air in the engine after the MAF sensor, the engine runs so lean it can't properly combust the fuel air mixture, and it stops operation.

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What does it mean when a car gets hot but blows cold air?

The Air Conditioner is on

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Why is my car running hot but not overheating?

Thermostat: Another possible issue could be a problem with the thermostat.A vehicle's thermostat is responsible for regulating the amount of coolant flowing through the engine.A broken or malfunctioning one can easily cause your car to overheat.If your vehicle has low oil, it might be causing you...

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Why wont my car start in the cold but it will in the heat?

try checking your battery usually it is the lack of cold cranking amps

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Why wont your 99 bravda start when its cold but will when its warm outside?

There are so many things that could be wrong its not even funny. Depends on if its a no fuel or no fire situation. Depending on which one it would be anything from a cracked sensors that is expanding and contracting and in the cold it would be contracted. Does the vehicle crank or do nothing. Lot...

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Why does my car squeal when its cold?

Cold weather can exacerbate underlying car problems, so you may begin to hear squeaks, squeals and other funny noises you haven't heard before.These noises may be caused by the engine belt, the serpentine belt, the air conditioning compressor or a power steering pump.

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Why does my car leak coolant when its cold?

An antifreeze leak can occur through a hole in your radiator.Corrosion of your radiator tubes or damage because of stones or debris can create a leak.Over time, your hoses get hard and brittle, and as a result, coolant can sometimes leak out where they join with your water pump, heater core, radi...

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Your car does not run hot but it bubbles when you turn it off?

It is normal to boil when you turn the car off. When the coolant stops flowing, the coolant in the hot engine boils and pushes steam out of the engine. The recovery tank collects the excess and allows it to go back in when the engine cools.

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Why does my car shut off when it gets hot?

Well, there is an ignition problem that can cause this when the engine gets hot and it stalls.It's caused by a lack of spark which can be either the ECU's fault (on EFI cars), or the coil on pretty much any car.Heat causes expansion.An engine needs more fuel when it's cold than it does when it's ...

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Why does my car stall when its cold?

Cold stalling problems are the most common because the engine needs a richer fuel mixture to maintain idle speed until it warms up.Intermittent cold stalling problems are almost always fuel-related.Or, a defective coolant sensor may be telling the PCM the engine is colder (or warmer) than it real...

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Why does my car stall when it gets hot?

Well, there is an ignition problem that can cause this when the engine gets hot and it stalls.It's caused by a lack of spark which can be either the ECU's fault (on EFI cars), or the coil on pretty much any car.Heat causes expansion.An engine needs more fuel when it's cold than it does when it's ...

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Why does my car lose power when it gets hot?

There are many reasons why your vehicle may be losing power, especially when accelerating.Some of these common causes are: Mechanical problems such as: Low compression, clogged fuel filter, dirty air filter, clogged Exhaust Manifold.Malfunction of actuators such as: Bad injectors, bad fuel pump, ...

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Why does Car start but after the engine gets hot you cant get it to start back up until the engine gets cold again?

what year is the car? it possibly could be that the choke is not disengaging after the car has warmed up. If the car has an automatic choke (powered by an electronic servomotor), that motor may have broke and left the choke on allowing the car to run when cold but not when hot. Other than the cho...

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Why is my engine hot but not overheating?

Thermostat: Another possible issue could be a problem with the thermostat.A vehicle's thermostat is responsible for regulating the amount of coolant flowing through the engine.A broken or malfunctioning one can easily cause your car to overheat.If your vehicle has low oil, it might be causing you...

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What's causing my 2001 Mazda b2300 to misfire when cold but run fine when hot?

My guess is that you have the wrong temperature spark plug. All spark plugs are not the same, somerun hotter than others.

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Why does my car smoke when cold?

It's not smoke you are seeing in cold weather when the engine is started cold, it is water vapor.When you stop your warm engine, the water condenses out into the exhaust system as the exhaust cools.The exhaust can suck air in from the outside as it cools, adding the moisture present in the surrou...

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Why is my car cranking but not starting?

If there's a spark when the engine is cranked, it has ignition.The problem is either fuel or compression.Use your AutoTap Express DIY to look for an RPM signal from the Crankshaft Position sensor while cranking the engine.A bad Crankshaft Position sensor is a common cause of no starts.

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Why is my car turning but not starting?

If a vehicle "turns over" but won't start, there is probably NOTHING WRONG with your starter, battery, or alternator.Cars that won't start when the engine is turned over by the starter usually have either a fuel supply problem or a no spark problem.A broken timing belt or chain can also stop your...

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My car is blowing out cold air not hot when the heater is on.?

You need to change your thermostat in the car.

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Why does my transmission slip when its cold?

Low fluid levels – The most common cause for slipping is low fluid levels.Low fluid levels can create a number of problems, such as overheating and not enough hydraulic pressure being produced to engage gears.Bands are what links the gears in the automatic transmission together.

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Why does my steering wheel get hard when its cold?

The fluid is not being pumped properly to the steering rack when it is "cold".Once it "warms up" it seems to get to the steering rack easier and makes everything work properly.This causes the belt to slip on the pulleys creating a chirping/squealing noise and decreased assistance in turning the s...

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Why does my serpentine belt squeal when its cold?

Cold weather can exacerbate underlying car problems, so you may begin to hear squeaks, squeals and other funny noises you haven't heard before.Bad or loose belts that need to be replaced due to normal wear and tear or a bad tensioner on cars with a serpentine drive belt.

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Why does my truck AC blow cold then hot?

Another cause of AC blows cold then warm An overcharged car AC system can start out pumping cold air.But that cold air turns warm fairly soon after because the high side pressures build to the point that the high pressure switch shuts off the compressor clutch.Evacuate and recharge the car AC sy...

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Why does my coolant light come on when its cold?

Engine coolant has a variable volume that changes with temperature.When cold, it takes up less space and could therefore be below the coolant level sensor (if equipped).If the light no longer comes on when starting, monitor the level to determine if coolant is leaking or being consumed through a ...

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Why does my power steering pump whine when its cold?

A squealing or whining that occurs when you turn your car's power steering while the engine is cold is an indication of air in the system.If the noise disappears after the engine warms up, the problem is generally the result of a bad O-ring on the inlet hose joint, allowing air to be sucked into ...

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Why does the car start but does not move?

That could be for a number of reasons, and it's impossible to diagnose without knowing more information.

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Why does my AC stop working when it's hot outside?

So now the refrigerant can't absorb more heat from your air, causing your air conditioner to blow out lukewarm air.Or worse.Your air conditioner will keep running until it overheats because it can't reach your thermostat temperature setting.Solution: Clean your outside unit using a special coil c...

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Why does my car hesitate to start in cold weather?

Cold weather makes the engine hard to start for two main reasons.First, oil thickens when it's cold, which increases friction and makes it harder for the staner motor to spin the engine.Cold also slows the chemical reaction in the car's battery, reducing its power output.

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Why does my car struggles to start in the cold?

Cold weather makes the engine hard to start for two main reasons.First, oil thickens when it's cold, which increases friction and makes it harder for the staner motor to spin the engine.Cold also slows the chemical reaction in the car's battery, reducing its power output.

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Why does the ac work when parked but when you drive your car it blows hot then cold and idle goes up and down?

Many ac systems use engine vacuum to operate the ac controls. You may have a cracked or disconnected vacuum line that feeds the HVAC system. Check the vacuum lines under the hood, that is where they would most likely be damaged. A vacuum leak would also be the cause of the erratic idle.

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Why does my car squeal on cold start?

Take the serpentine belt off and start the car for a second and if the noise persists it is something in the engine, if the noise goes away there is an obvious problem with one the the pullies or belt.Sounds like a slipping belt, it's a little worn so it slips over the pulleys.That's causing the ...

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Why is my camaro not starting but sound like its about to start but just dies off?

Probably a dead battery.

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What does it mean when temperature gage moves but not running hot?

Most likely the thermostat spring is weak, or the thermostat is sticking, causing the thermostat to open too early and stay open too long. This will cause water to circulate to the radiator, causing the temperature of the cooling water to fall below the target temperature, and so the temp guage f...

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Why does my car not start sometimes?

Numerouse possibiities, bad gas, bad carburetor, bad spark plugs, bad spark plug wires, bad ignition coil, bad battery, bad ignition swithc, etc..

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Why does my car die when I start it?

An issue with the mass airflow sensor may manifest itself when a car starts and then stalls soon after starting.When an ignition coil begins to fail, it may struggle to provide consistent spark to the plugs, causing the engine to stall after starting.

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Why does my car rattle when I start it up?

If the rattling noise occurs when the car is stationary the origin is in the engine/transmission and/or exhaust system.If the identical rattle occurs when the car is moving, too, motor mounts or loose exhaust system components are a possibility.

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Why does the car shake and once turned off when its cold like in the morning or after work but not when it has been running?

The car shakes because your engin has been cold and you sudenly start the car it will shake

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When its cold outside my car pops when you put it in gear but its fine when it warm up?

i think its because the transmission fluid is cold the only way to warm it up is to buy a cheap oil pan heater or if you have a wood stove sit a pan of ashes under the tran now it doesnt really do any harm when it pops that's just it going into gear

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Why does my car smoke when I first start it?

The white smoke is the result of normal condensation which builds up inside the exhaust system.Thick smoke usually comes from the faulty in engine coolant, which could lead to many serious problems like damaged cylinder head, blown head gasket, cracked engine block… which might cost drivers quite...

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Why does my car knocks when you first start it?

its called a "dry start" and Many cars do it .. when the car sits for a little bit like 30 mins or more .. all( or atleast the most) of the oil runs back down to the oil pan .. once u start it .. it has to regain oil pressure to stop rattling...........................

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Why does my car smoke when I start it up?

Give your car immediate attention to avoid costlier repairs.White smoke usually points to an engine burning coolant.When they are worn out, liquids begin to mix and consequently you start having engine problems.White smoke is usually caused by blown head gaskets or worn valve stem-seals.

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Why does my car squeal when I start it up?

The sound of a squeaking belt in a car's engine can be caused by weather conditions, leaking fluids, maintenance issues or wear and tear.The magnitude of sound can range from a soft squeak to a loud and noisy squeal and it may occur while starting a cold engine or during normal vehicle operation.

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Why does my car sound weird when I start it?

Most car noises come from the engine, belts and pulleys, hoses, exhaust system, tires, suspension system, tire to pavement contact, braking and aerodynamic interference.A car noise may be an early signal of an auto system or component failure.

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Why does my 205 automatic not start first time in cold or damp?

Because it is awful...

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Why does my car make noise when I start it?

Start the car while it is cold and turn the AC off and on.If the sound of the screech changes, then the fault is likely in the belt that drives the air conditioner.Operate the headlight switch.If that causes a change in the squealing sound, then the culprit is the belt that drives the alternator.

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Why does my car overheat when driving but not when idling?

The most likely reason for this type of problem is that your fan isn't working, but the reason, and the fix, will differ depending on the car you drive.Intermittent overheating problems can also be caused by low coolant, air in the cooling system, a bad coolant temperature sensor, or even a fault...

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Why does your vent blow hot air when it is set on cold?

It depends on what the weather is outside and how developed the air conditioner is. if it's hot out it may take a while to get cool or if it is scorching hot outside it may not get cold at all.

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Synchronizer squeels when car is cold but stops when the car is hot?

Your Lubricant is too cold to flow & lubricate efficiently. Switch to a Synthetic Lube. Suggest AMSOIL Gear Lube or AMSOIL Synthetic Manual Transmission Lubricant. See your Owners Manual for correct viscosity.

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Why is my car AC blowing cold and hot air?

Another cause of AC blows cold then warm An overcharged car AC system can start out pumping cold air.But that cold air turns warm fairly soon after because the high side pressures build to the point that the high pressure switch shuts off the compressor clutch.Evacuate and recharge the car AC sy...

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Why does a car start but not shift gears?

You either need a new transmission or a new clutch.

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Why does my car smell like its overheating but it's not?

THE CULPRIT: Coolant containing sweet-smelling (but toxic) ethylene glycol is leaking from somewhere.It could be coming from a radiator or heater hose, a failed intake manifold gasket or cylinder head.It might be coming from a leaky radiator cap or the radiator itself, especially if you smell it ...

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Why is my cars AC not cold?

The most common causes of broken air conditioning are leaks or compressor issues.If your air is blowing cool but not cold, the problem could be a clogged filter, cooling fan problem or radiator trouble.Don't tolerate a stuffy, uncomfortable car.

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Why does my 2003 dodge stratus heat work but when i stop at a light it shoots out cold air?

Check your radiator coolant level. On some cars, low coolant will let air bubbles into the heater core which can result in intermitant cold air bursts.

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Why is my car faster when it's cold?

Now, cold air is denser than warm air, so in cold weather the number oxygen molecules entering the combustion chamber per unit volume of air is significantly greater than when the temperature is high.More oxygen provides better combustion, and hence a noticeable increase in power.

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What does it mean when your car is turning over but not starting?

When your engine cranks but won't start or run, it could mean your engine is having trouble producing a spark, getting fuel, or creating compression.The most common causes are in the ignition (for example, a bad ignition coil) or fuel system (for example, a clogged fuel filter).

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Why is my AC not as cold when idling?

Overheated engine Another common reason for car AC not blowing cold air when idle is an overheated engine.The compressor of the AC system moves heat from the radiator to the condenser.

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Why does my truck misfire when cold?

The injector may not be holding fuel pressure after the engine is shut off.When this occurrs with a hot engine the heat of the piston vaporizes the fuel.When the engine is cold the fuel sits in the cylinder and causes a misfire on start up until the cylinder clears its self.This might explain why...

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Why is my truck cranking but not starting?

If there's a spark when the engine is cranked, it has ignition.The problem is either fuel or compression.If the belt is okay, the problem is no fuel.Listen for the electric fuel pump in the fuel tank to make a buzzing noise when the ignition is turned on (you may have to open the gas cap to hear ...

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Why does your car smell hot and its not?

Many people associate the smell of antifreeze with an overheated engine. The only reason we do that is because we certainly smell antifreeze when the engine is overheated and blowing out antifreeze, but if there is just a slow leak of antifreeze and we smell that, we MIGHT be able to convince our...

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Why doesn't my car move when it's really cold outside?

Have you checked the fluid level? Make sure to add only the correct type of fluid and not to overfill. Read owner's manual.Does it move after the motor warms up after idling for few minutes,and no delay in summer?Does it have an automatic transmission?Is it over 10 years old and/or have over 150,...

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Why is my car hard to steer when its cold?

The fluid is not being pumped properly to the steering rack when it is "cold".Once it "warms up" it seems to get to the steering rack easier and makes everything work properly.This causes the belt to slip on the pulleys creating a chirping/squealing noise and decreased assistance in turning the s...

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Why does a car sounds like it wants to start but will not turn over?

This is a murder mystery - Right? This is totally no comprendo. You are missing some or all of the clues and of the critical elements. 1 Is the starter running and nothing happening? Send more info please.Q:I'm having a similar problem with my Hyundai it sounds as if the starter and alternator ar...

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Why is my AC not cold when idling?

The cooling fan in the condenser is the first thing that you should look into while finding out the reason for car air conditioner not blowing cold air when idling.If the fan is damaged or cannot run with its full force, it cannot cool down the heat coming from the Freon (refrigerant) through the...

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Why does my clutch judder when hot?

Re: Clutch judder when warm/hot, what needs replacing?? Most likely the clutch cable conduit.When the engine rocks with pulling away from standstill the bend in the clutch conduit allows for a bit of give on the cable without causing the pressure plate to get depressed slightly on and off hence ...

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Why does my engine knock when cold?

It has developed a clicking engine noise on a cold start.After the car has warmed up, the sound goes away.This cold start noise is caused by a carbon buildup on the crown of the piston and roof of the combustion chamber, causing physical contact and a relatively sharp click at the very top of the...

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Why does my engine tick when cold?

It has developed a clicking engine noise on a cold start.After the car has warmed up, the sound goes away.Clicking or a sharp tapping from the valve cover on top of the engine would point to a valve train noise.A dull tapping or slapping sound from the side of the engine block would point more to...

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Why does your car knock when in gear and not moving but stops when it moves?

Sounds like a loose motor mount.

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Why does my car blow out cold air when idling?

Hot coolant from the engine passes through a heater core, which looks and functions a lot like a small radiator, and a blower motor forces air through it.It's also the reason that a plugged heater core, stuck thermostat, or air in the cooling system can all cause a car's heater to blow cold.

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Why does my car go in reverse but not drive?

The car will reverse but not go forward because of worn out solenoids, clutches, or gears.Transmission is likely to be the root cause.Transmission Fluid – Low level of fluid is a potential reason for making the car moving to reverse only.Check the level when the engine is hot and the vehicle runs...

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Why does my car cranks but doesn't start?

The engine needs fuel, compression and spark to run. You are missing at least one of those.

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Why does my car click but wont start?

The car makes a clicking noise but won't start.This sound usually means a dead battery.If not, check the wiring to and from the starter for a loose connection.

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Why is my gear shifter locked .my car is started but will not shift into gear?

the brake interlock press on the brake to release it

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Why does my car start but wont stay running?

This issue could be caused by an insufficient amount of fuel reaching the combustion chamber.For fuel issues, start by checking the fuel pressure.With too much air in the engine after the MAF sensor, the engine runs so lean it can't properly combust the fuel air mixture, and it stops operation.

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Why is my kawasaki bayou 300 hard to start when it's cold?

most Kawasaki engines need to be warm. instead of trying to turn on the engine again and again and again, when turning on the engine hold it on III for a little while, then it will get used to the cold and u can turn it on normally. the only bad thing about that is that when its warm u have to do...

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Why does my car run rough when cold?

Rough Idle If the car starts when cold but, idles rough or does not want to stay running, this can indicate a problem with the engine temperature sensor.When the engine is started cold, the engine temperature sensor sends a signal to the DME control unit to provide a richer mixture.

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Why does my car idle rough when cold?

If the car starts when cold but, idles rough or does not want to stay running, this can indicate a problem with the engine temperature sensor.When the engine is started cold, the engine temperature sensor sends a signal to the DME control unit to provide a richer mixture.This causes the engine to...

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What does it mean when my car turns over but wont start?

When your engine cranks but won't start or run, it could mean your engine is having trouble producing a spark, getting fuel, or creating compression.The most common causes are in the ignition (for example, a bad ignition coil) or fuel system (for example, a clogged fuel filter).

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Why does my car rev high but not accelerate?

No, a clogged fuel filter would not explain an engine that is revving at high RPMs without the car moving at an appropriate speed.The most likely explanation would be a failing transmission if it is of the automatic variety, or a slipping clutch if it has a manual transmission.

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Why does my car squeal when I turn it on in the cold?

Cold weather can exacerbate underlying car problems, so you may begin to hear squeaks, squeals and other funny noises you haven't heard before.These noises may be caused by the engine belt, the serpentine belt, the air conditioning compressor or a power steering pump.

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What does it mean when my car wont start but all the lights come on?

When an Engine Won't Crank, But the Lights and Radio Work The most likely culprits are a blown fuse or fusible link, bad starter, bad ignition switch, or a dead car battery.If it accepts a charge, and the vehicle starts after it has been charged, then the problem is solved.

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Why does my car idle high when cold?

High RPMs in the cold is a result of combustion taking place in the engine.Your car is able to start because gasoline and air are coming together to form a spark.Gasoline vaporizes much more easily in warmer temperatures to get that spark.In colder temperatures, fuel is more likely to get bogged ...

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Why would a car have a long turn over when its cold but after the first start up it starts up right away?

In older cars, where your air filter is, there is a door that is suppose to shut when your car is cold. check the sensor on top of the air filter canister by placing a bag of ice on it and look to see if the door in the intake part closes, with the engine running. Look at rubber hoses to see if a...

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Your car does not heat when cold in the morning but heat in the afternoon?

Because it's warmer in the afternoon...

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Why does my car make a ticking noise when its cold?

Cause of ticking noise GM has determined that the noise can be caused by any of the following: Aerated oil in the valve lifter body, resulting in the valve lifter being unable to purge the air quickly.A low engine oil level or incorrect oil viscosity.

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Why do diesels not start in cold?

When it's cold, the fuel that's injected into the engine condenses on the cylinder walls, making it difficult to ignite.Diesel engines also lack a spark plug, which a gasoline engines use for ignition, and instead rely on compression and air intake to create combustion.

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When i start my car when its cold outside I always smell gas?

Smelling a gasoline smell when the weather is cold could mean that the gas is set too rich. It would also be possible that the carburetor needs to be checked for a fuel leak.

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Why wont my car start if it's not the battery?

When an Engine Won't Crank, But the Lights and Radio Work The most likely culprits are a blown fuse or fusible link, bad starter, bad ignition switch, or a dead car battery.The easiest one to rule out is the battery, which is why it's a good place to start.

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Why won't my car start if it's not the battery?

When an Engine Won't Crank, But the Lights and Radio Work The most likely culprits are a blown fuse or fusible link, bad starter, bad ignition switch, or a dead car battery.If it accepts a charge, and the vehicle starts after it has been charged, then the problem is solved.

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Geo Tracker will not start when hot?

1: loss of spark test spark.2; flooding hot , cause by to rich. (huge list)3: loss of fuel.4: loss of electric power hot.see my profile see link.

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Why does my 2002 chev S-10 turns over but will not start?

2002 chev S-10 will turn over but not start.

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