Why is my furnace running when thermostat is off?

Set your thermostat to a temperature that's lower than the current room temperature.

This shuts the furnace down and prevents your thermostat from calling for more heat.

If so, it's likely that you've set your set temperature too high, causing your furnace to heat continuously as it tries to reach that temperature.

Previous questionWhat causes a furnace to run constantly?
Next questionWhy does my thermostat not turn off?

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Why is my furnace fan not turning off?

The fan control should be set to AUTO.You can try turning the switch to OFF too.Other snafus such as a shorted thermostat wire can also cause the A/C or warm air furnace fan to run continuously.Those problems are explained at THERMOSTAT WON'T TURN OFF.

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Why does my furnace turn on when the heat is off?

This is most common cause of short cycling.A dirty air filter restricts air from getting into your furnace.Your furnace's heat exchanger needs that air blowing over it or it overheats, causing the furnace to shut down.Change (or wash, if you have a washable type) your air filter if it's dirty.

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Why does my furnace blower turn on and off constantly?

The system uses a “temperature probe” to detect temperature changes inside the heat exchanger (see image below) and turns your blower on and off in response.So if your furnace blower is turning on and off when the furnace isn't in a heat cycle, it usually means the fan limit switch is defective.

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Why does my furnace turn on and off repeatedly?

Why a Clogged Furnace Air Filter Can Cause Your Furnace to Turn On and Off Repeatedly.If you remember from our orientation up above, the most common cause for your furnace to keep turning on and off is the High-Limit Switch, which turns the unit off if the temperature inside gets too high (as a s...

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Why does my thermostat not turn off?

Step 1: Check the Thermostat If an air conditioner does not automatically switch off, it may be because the temperature has been set too low.This action tells the air conditioner system to switch off.If the unit does not immediately turn off, then it is likely that the thermostat is not the prob...

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Why is my furnace filter dirty?

Your filter gets clogged faster when your furnace is running more often.That's because more air is cycled through your filter when your furnace goes through more heating cycles, so more contaminants get caught on the filter's media.The colder it gets outside, the faster your filter will get clogg...

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Why does my fan keep running when my car is off?

It's normal for some vehicles to have a fan run for a few minutes after the car is shut off, generally to keep the engine cool.However, if the fan is running for an extended period, the fan itself can become damaged due to overuse.It's possible you may have a module or relay failing in your car.

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Why does my Car engine continue running when the ignition is switch off?

It sounds like your dizzy cap isn't lined right which causes the engine to stay running after the ignition has been switched off. i had the same problem with my fiesta

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Why does my car turn off while it is running?

Because there's something wrong with it. For a more detailed answer, take it to a mechanic.

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Why my Engine turns off while ac is running?

It could be that the engine is idled to low.A2: There is an idle solenoid to boost idle speed when A/C on. It may be defective or there is a wiring problem; switch, fuse, etc. It may also not be adjusted right. Look at the far side of it (Not the throttle side) ; it should have a wrench adjustmen...

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What do you do when your furnace won't turn off?

A furnace could potentially not turn off for a few different reasons. Replace your "furnace limit switch." Check the wiring to your furnace's thermostat. Check to make sure none of the controls or buttons on your furnace are sticking in the "Down" position.

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Why does my 2000 Passat keep running when I turn off the key?

your timing is not set right

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Why does my car keep running when I turn the key off?

Running-on is when the engine continues to turn after you've switched off the ignition because the fuel /air mixture is being ignited by a hot-spot in the combustion chamber.The problem can be so bad that the engine runs on for a minute or more if left alone.

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Why does my furnace make a loud noise when it turns on?

This can sometimes create booming or banging sounds when your air handler turns on and the pressure changes inside of your ducts.If this sound gets louder or occurs more frequently than usual, it's likely due to pressure buildup in your ducts that are caused by a clogged air filter or closed vent...

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Why does my car sound like it's running when I turn it off?

Engine cooling fans and other systems are programmed to keep running in some cars even when the engine is off.Once outside the car, she could hear a fan running in the engine area and asked us if this is normal.It is.And many other sounds from under the hood of a car that has been shut off are al...

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Why does my car sound like its still running when its off?

Engine cooling fans and other systems are programmed to keep running in some cars even when the engine is off.Once outside the car, she could hear a fan running in the engine area and asked us if this is normal.It is.And many other sounds from under the hood of a car that has been shut off are al...

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WHY DOES THE FAN ALWAYS RUN ON MY KENWOOD WHEN IT SHOULD SHUT OFF?

If you are referring to a refrigerator, this is a sign that the defrost heater or possibly cycle timer is not working, or the cooling fins are clogged with dust etc. ( please name the device in future, Kenwood makes all kinds of appliances)It is probably running until the temperature is low enoug...

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Why does my diesel engine keep running when I turn it off?

When your engine keeps running after shutting it off, you'll hear it firing or coughing.This condition is also known as after-running or dieseling because combustion of the air-fuel mixture happens without the presence of the spark, just like in a diesel engine.

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Why does my engine run after I turn it off?

When your engine keeps running after shutting it off, you'll hear it firing or coughing.This condition is also known as after-running or dieseling because combustion of the air-fuel mixture happens without the presence of the spark, just like in a diesel engine.

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Is it bad for furnace to run constantly?

So a furnace that's constantly turning on and off works much harder to heat your home and uses more energy, which raises your monthly utility bill.Discomfort—Because your furnace is turning on and off all the time, it won't run as long, which means you'll have uneven temperatures throughout your ...

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Why does my furnace filter gets black really quick?

So, you're changing your gas furnace's filter and notice that it's got nasty black sooty substance on it.Gas-fired furnaces shouldn't produce soot.And, when left alone, soot can cause pricey problems like: Insulating the heat exchanger, lowering your furnace's efficiency as a result (meaning bigg...

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Why is my car thermostat on cold?

When the engine is cold, the thermostat is designed to be closed, blocking coolant from circulating through the radiator, hoses, and engine.This helps your car warm up faster, because an internal combustion engine really hates running outside of the specified operating temperature.

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Why is my fan still running after I turn my car off?

It's normal for some vehicles to have a fan run for a few minutes after the car is shut off, generally to keep the engine cool.However, if the fan is running for an extended period, the fan itself can become damaged due to overuse.It's possible you may have a module or relay failing in your car.

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What causes a furnace to run constantly?

Dirty furnace filters are one of the biggest causes for a furnace to continuously run or “short cycle”.The dirty filter restricts airflow across the heat exchanger which causes it to get too hot! The furnace goes into cool down mode and will run the fan continuously and will cause your furnace to...

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Why does my car run good but cut off sometime?

because it requires gas to run good. when it has no gas it cuts off :)

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Why does my ktm 525 stop running with choke off?

The carburetor needs to be removed, disassembled, cleaned, reassembled and replaced. If any gaskets tear in the process you will need a rebuild kit.

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Why does the thermostat not shut off?

Without enough air flowing over the coils, the system can't remove humidity and cool the air to the set temperature, so it keeps running when it shouldn't.If your thermostat is not working correctly, the unit doesn't know to turn off even when the temperature is reached.

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Why is my car running hot when sitting still?

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 my car run slow when AC is on?

Cars RPM drops when the AC is turned on because the AC compressor has kicked in.Energy diverted from the engine to power the air conditioner refrigerant compressor., assuming the car doesn't compensate for the additional load by slightly increasing the throttle to match.

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Can I run my furnace without a filter for one day?

The answer is NO.Well, technically you can run your furnace without a filter.It will operate without one, but you'll risk potential damage to your system and to your health and the health of your family, and that's just not worth it.

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Why is my car shutting off when I stop?

Dirty or Malfunctioning Mass Air Flow Sensor If your car shuts off while idling, then there might be something wrong with the sensors installed in the vehicle.This means that the sensor ends up sending incorrect information and readings to the car's engine.Such activity results in the vehicle sh...

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Why do my headlights stay on when car is off?

In that case, you can try setting the parking brake to see if that shuts the headlights off, as setting the parking brake typically disables daytime running lights.If a bad headlight relay is a reason that your headlights won't turn off, then the fix there is also to just replace the relay.

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What happens if I run my car without a thermostat?

When driving without a thermostat, you may notice a decrease in gas mileage or performance.This is because driving without a thermostat "tricks" your engine into thinking it is cold outside, causing it to adjust the gas mixing valve and push more fuel to the engine.

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Why coolant leaks when engine is off but heat wont work when engine running?

The heat is not working because you are very low on coolant, probably because of the leak.Seems to me that it should leak worse when it is running, so I am going to assume you are talking about the coolant overflowing the reservoir, in which case goes back to you being low on coolant and the engi...

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Why won't my headlights turn off when my car is off on my 1996 subaru legacy outback?

Do you mean the parking lights? if it's the parking lights that are on, check the switch on top of the steering column.

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Fan keeps running when car is off?

it sounds like it's overheating. Check it has coolant fluid in, if so, then it could be the water pump system.

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Why is my battery light on when my car is off?

The battery light indicates a battery charging problem.If the battery light comes on and stays on while you are driving, the most common cause is a broken alternator belt.Total failure of the alternator is another possibility.Your car will run fine until the battery goes dead.

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Why is my car still running after I turn it off?

When your engine keeps running after shutting it off, you'll hear it firing or coughing.This condition is also known as after-running or dieseling because combustion of the air-fuel mixture happens without the presence of the spark, just like in a diesel engine.

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Should you let your furnace fan running continuously?

Pros to Allowing Fan to as Needed: This option is much more cost effective, because you are using less energy.The fan's “AUTO” setting works with your heating + cooling system, so your fan is running the least amount of time needed, at the slowest speed.Your furnace filter will last longer.

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Why is my car overheating with a new thermostat?

A broken thermostat can also cause your car to overheat.The thermostat in your engine controls the flow of coolant.If it is hot near the radiator after you have driven your car then coolant is flowing through it.If it is still cold you may have a broken thermostat and should remove the thermostat...

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Do you have to turn off furnace to change filter?

To Change Your Home Air Filter, You'll Need To Turn Off Your Furnace.To prevent the HVAC unit from turning on while you are changing the filter, make sure you turn the thermostat to the “off” position.For maximum safety, disconnect power from your furnace system while you are doing maintenance.

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Why does my windshield shake when my truck AC is running?

The truck needs a tune up.

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Why does an engine keep running when ignition key is turned off?

Its not your engine. Its the fan running to cool the engine down. They all do it and nothing is wrong with your car.

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Why is it that when you turn the car off its still running?

Could be that your idle speed is too high, or engine is running too hot causing the PMC to deliver a richer mixture,

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Why is fluid leaking out on a corsa when engine is running but stops when engine is turned off?

what kind of fluid, and what's a corsa?

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Why does my fan stay on when my car is off?

In today's modern vehicles it is considered normal for the engine cooling fan to keep running for a few minutes after you turn off the car.When the engine is turned off, the coolant doesn't circulate, and the heat stays trapped therefore prolonging the engine from cooling.

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2007 impreza outback why are the running lights staying on when car is turned off?

There is a switch to turn the lights on when the car is off. On an 01 & 07 impreza (and other model years too), it is on the top of the steering wheel column, in between the steering wheel and the gauges.I did the same thing, took me an afternoon to find it, and I felt pretty silly when I fig...

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Why does the battery light come on and off when the car is running?

This could happen for different causes.1. Your battery is making contact with a surface (like the hood, seat frame or trunk battery holder.) in BMW 325 or Cadillac north-star cases.2. The positive cables from the alternation or starter are bad and making contact with the engine, manifolds or body...

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Why is the air conditioning fan still running when you turn off your car?

It's probably the catalytic converter fan; not the a/c fan.

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Why does the car continue to run when ignition is shut off?

because of the petrol that ignites with the engines through acceleration.

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Why when my car is running it will not move when in Drive?

Transmission.Get out your checkbook.

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Why does the engine keep running when the car is turned off?

Two answers:

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Why does a 87 pathfinder start then shuts off it runs rough when it shuts off rpm needle is erractic?

Sounds like an electrical problem - maybe coil

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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 run rough when idling?

Rough idle caused by spark plugs, spark plug wires or ignition coil problems.If you have a rough idle that is caused by either the spark plugs, spark plug wires or ignition coil, you will also feel it when accelerating.If these parts are bad enough to cause a miss at idle, it will continue to mis...

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Why does my engine run rough when cold?

This causes the engine to run rough.As the engine warms, it not longer needs the richer cold idle mixture and the engine runs smoother.If the car idles rough this can also be indicative of bad plug wires, distributor, or rotor.A rough idle can also be caused by a problem with the air flow box.

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Why does my car shut off when in reverse?

For the reverse stalling condition, check the Idle Air Control Valve and see if its plugged up.If a IAC valve is plugged up, an engine will stall out when going into gear and could cause issues when slowing down.For the steering and stalling issue, check the power steering fluid and see if its low.

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Why does my car cut off when I back up?

Usually when you shift into reverse and engage the brake it will cause the engine RPM to drop; as it's creating a load against the transmission and the engine.If the engine stalls, it may be caused by a faulty idle control valve, bad O2 sensors, or clogged fuel injectors.

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Why does my subwoofer pop when I turn it off?

The other pop is caused by the actual switch turning off.There is energy stored in the woofer (inductor) or in the capacitors of the amplifier, which causes a back-EMF when the circuit is cut, much like when you turn off a fluorescent light; sometimes you see a spark at the switch.

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Why won't my car shut off when it overheats?

You did not specify make model and year.If you have a very old car It could be doing what is called dieseling.ORThe engine computer could be keeping it running to try to get it to cool off.But with out knowing what car it is those are just guesses.

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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 judder when I pull off?

Juddering when pulling away in 1st and/or 2nd gear is often caused by a dodgy thrust bearing in the clutch assembly.Unfortunatlely you can only get at this by stripping the clutch down, in which case it is false economy not to replace the lot (i.e thrust/friction plate, cover assembly and thrust ...

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Why does my car turn off when I stop accelerating?

Common reasons for this to happen: Let's have a look at some of the more common causes that would make your car stall or stumble when you attempt to accelerate.Faulty ignition components: The ignition coil pulls power from the battery and delivers it to the spark plugs, which ignites the fuel and...

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Why do my LED lights stay on when switched off?

This may be due to the type of light switch or dimmer or an incorrectly connected switch.Even an unfavorable cable routing can be responsible for the glow.The afterglow issue is usually only visible after switching from old light bulbs to LEDs.

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Why does my serpentine belt came off when it rains?

This will cause water to flow onto the belt and the resultant belt slip when it rains.Hope thi help.The serpentine belt may come off due to a worn tensioner, idler pulley or pulley alignment.You may need to replace the tensioner, idler pulley, and the serpentine belt to correct the problem.

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Why does my BMW cut off when I stop?

The main purpose of auto Start/Stop is to save fuel.Every time you stop at a red light or are stopped in traffic the engine turns off.As soon as you take your foot off the brake the engine starts again automatically.It takes about 1 second for the BMW engine to restart.

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Why does my car sputter when I turn it off?

Usually it's a sign of one or more of the following: (1) excessive gasoline remains inside the combustion chamber even after shutoff, causing "auto-ignition" (similar to dieseling due to compression ignition) even after you turn off your engine.(3) air filter is a bit clogged, causing the carb to...

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Why does my car cut off when I accelerate?

Common reasons for this to happen: Let's have a look at some of the more common causes that would make your car stall or stumble when you attempt to accelerate.Faulty ignition components: The ignition coil pulls power from the battery and delivers it to the spark plugs, which ignites the fuel and...

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Why is my engine running rough?

A rough idling engine can be caused by spark plugs or spark plug wires.Spark plugs use the electrical current received from ignition coils to ignite the air/fuel mixture within the combustion chamber.If the damage is bad enough, you may also notice your engine running rough while driving.

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Why is my car not running smoothly?

Problems with your tires are the most common reason your vehicle isn't driving smoothly.Increasing or decreasing tire pressure is usually a simple fix, but if too much time has passed, low air pressure can cause extra tire wear and too much air pressure can cause the tires to warp or wear more qu...

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Why is my car running cold?

When the engine is cold, the thermostat is designed to be closed, blocking coolant from circulating through the radiator, hoses, and engine.This helps your car warm up faster, because an internal combustion engine really hates running outside of the specified operating temperature.

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Why does my car keep running after turning off the key. dieseling?

Your diesel vehicle might keep running after turning off the key because there is still enough fuel in the system to allow it to idle. In many diesel vehicles, the engine is stopped by choking the fuel.

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Why does my car turn over and run then shut off?

Useless amount of detail ! - At least tell us the make , model and year if you expect us to find an answer .

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What makes a car speedometer run when car is off?

its a 1994 cavalier the speedometer runs on its own and will not start it starts when the speedometer is not running it has the vs sensor

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Why is my engine running cold?

So why is my engine running cold? If your engine is struggling to get up to temperature, this is most likely due to the thermostat failing.With the thermostat stuck open, however, your engine will have trouble warming up as it starts out circulating cold coolant through the radiator immediately.

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How do I know if my limit switch is bad on my furnace?

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Why does my car keep running after I turn it off?

Running-on is when the engine continues to turn after you've switched off the ignition because the fuel /air mixture is being ignited by a hot-spot in the combustion chamber.The problem can be so bad that the engine runs on for a minute or more if left alone.

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Why is cooling fans running after engine shut off?

to dissipate the residual heat in the radiator it will shut off automatically

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Why does my car engine continue to run after the ignition has been turned-off?

I believe this usually this happens if the fuel / air mixture is not rich enough (too much air / too little fuel) which causes the cylinder heads to get too hot which means that any unburnt fuel in the cylinders will continue to ignite even after the ignition has been cut.

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Why does my car fan keep running after I turn it off?

It's normal for some vehicles to have a fan run for a few minutes after the car is shut off, generally to keep the engine cool.However, if the fan is running for an extended period, the fan itself can become damaged due to overuse.It's possible you may have a module or relay failing in your car.

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Why my 92 Ford F150 runs good gets hot and shuts off wont start back?

You're losing spark or fuel. Next time it dies check for spark. If you have spark then you have a fuel problem. Start with replacing the fuel filter. If it still dies I would suspect the fuel pump is bad. A fuel pressure test could verify that.

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Why is 95 Volkswagen jetta running hot it's not the thermostat?

im not very knowledgable with volks but there may be a water pump problem, or a radiator problem,is the radiator circulated the cool water from iit to the block that has hot water in it?

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Why does my car shut off when I let off the gas?

The car will stall if the valve is too clogged or when it finally fails.If, while holding the accelerator pedal down, a small amount of pressure keeps the car running at a stop, the idle control valve may require attention.In most late model cars, this problem will usually trigger the Check Engin...

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Why does your car run after it is shut off?

This is called "dieseling" and is a bad thing. There are several reasons it might happen, but the short answer is "take it to a mechanic, tell him it's dieseling, and let him figure it out."

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Why does starter stay running after switch is off?

Either the keyswitch has failed or the contacts inside the starter have fused.

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Why does Radio runs after car is shut off?

Is the key cycled onto the accessories or turned back past lock? If it is turn it completely off.

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Why is my 97 Escort running rough an loosing power when driving?

Could be in need of a good tune up.

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Why does my car run bad when the AC is on?

Common reasons for this to happen: Low Refrigerant in the AC System: If your AC system is low on refrigerant, it will make the compressor cycle on more frequently, increasing the load on your engine.Bad Belt: One often overlooked cause of a car surging with the AC on is actually a worn compresso...

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Why does my rpm gauge chatters when the car is running?

The year, make and model info would help. If it's cable driven the cable might need lubrication.

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Why do my rear lights stay on when the car is off?

Brake & tail lights stay on after car is off and lights are not turned on.The brake light switch is probably out of adjustment, missing, or bad.When you press the brakes, the brake pedal moves away from the brake light switch, causing the brake lights to illuminate.If the switch is bad, they ...

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Why does my car die when I take my foot off the gas?

If the engine runs fine when you are holding the accelerator pedal down and dies when you release it then you may have a couple of possible issues.If it is dirty it can starve the engine of air at idle.If nothing turns up there then you may have a bad idle control valve or air flow meter.

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Why is my car trying to restart when I turn the keys off?

this is called dieseling and it could be a number of things. but your idle speed may be too high. or your ignition timing is wrong. if the engine is older then it may be that you have too much carbon build up in the combustion chambers. that requires removing the heads.

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Why does it only try to run when letting off the key for a sec?

That is a tell tell sign that your problem is eletrical. Mabey a bad relay

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Why does my 1997 mercury tracer car battery light blinks on and off while the car is running?

If your 1997 Mercury Tracer has a battery light that blinks on and off while the car is running, it most likely means that the battery is not charging. This could be an issue with your alternator.

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Why do my tail lights stay on when the car is off?

You need to disconnect your battery while the car is off or until you resolve this issue.The most likely cause for the brake lights staying on is the brake light switch sticking closed.You can disconnect the plug from the brake light switch at the brake light pedal to see if the lights turn off.

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Why does my car turn off when the AC is on?

It may be from low power to the computer, a faulty fuel pump due to bad connection, or a low battery.The blower fan draws a lot of current, perhaps that is dropping the voltage suddenly and causing some electrical component in the ignition system or the anti theft system to shut down the car.The ...

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why won't truck shift into reverse or fifth when running or shut off?

There can be many reason that will prevent a transmission from shifting into a particular gear. The most common reason is the transmission gear is worn smooth.

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Why does Peugeot 205 diesel engine run on when ignition turned off?

you need to replace the stop solenoid on the top of the fuel pump if it is a lucas pump. I had the same problem, but they are are fantastic price, ie £72 plus vat from main dealer, so shop around or get one from a breakers. mine started without having to bleed the system, but you might have to. d...

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How do I make my furnace blower quieter?

reduce furnace noise: how to quiet a noisy furnace Fix the weak spots. If the ductwork in your furnace is faulty, the furnace will produce a banging sound because of the oil-canning. Fix the gas ignition problem. Replace dirty filters. Fill the gaps in the ducts. Resize your air ducts. F...

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Can I run my car's air conditioning with engine off?

no... your a/c compressor is engine driven, does not supply pressure with engine off, i hav seen an after market electric compressor by ARB that will run at the flick of a switch. sorry not much help, just dosent work without the engine on

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