Why does my car engine rev up and down when in park?

Cars & Vehicles

The idle valve is probably stuck. It probably needs to be changed. ----------------------------------- This may also indicate a vacuum air leak. My Odyssey did this recently. The idle and all other vacuum systems are connected. If one leaks, the idle may be effected. Question: Is your TCS light coming on and check engine light coming on? I used my TCS when it snowed last, and it started doing this right after (revving up and down). The TCS is a vacuum engaged system. Mine was stuck between on and off... probably because it is not used often. I fixed it! Simply put the vehicle in drive and burned a little rubber. The extra tork on the drive train disengaged the TCS completely and the problem immediately went away. Many part stores such as Advance have code checkers also. You can use one for free at many stores. You can clear your codes if your engine light is stuck on - to make it go off once it is fixed. Hope this helps someone, Marc

Previous questionHow do you not get nervous when doing a presentation?
Next questionWhen can you file a abandonment title?

Related question

Why does car rev up and down when in idle?

I can't say for sure what the exact cause is of it. however, i had a friend with a manual transmission Honda Civic that would do the same thing, he says it has something to do with the O2 sensor. so that gives you a starting point to find the problemidle airflow metre is more than likely the prob...

Read more

Why does my car rev up and down?

The idle is controlled by the idle air control valve and if it cannot keep the engine idling it will keep trying to rev the engine up to compensate.A vacuum leak, sensor that has failed, or an EGR system malfunction could potentially be the cause of the erratic engine you're experiencing.

Read more

Why is my car overheating and revs up and down?

There are several reasons why your car may be overheating. Check the thermostat to be sure it isn't stuck. If the car revs up and down, the timing may need to be adjusted.

Read more

Why does my lawn mower keep rev up and down?

If the air that the engine requires to run is blocked, especially sporadically, it can cause the engine to slow down.When the blockage moves or clears, the engine may suddenly rev up in response.To fix this type of problem, check the air filter to ensure that it's not clogged with dirt and debris.

Read more

What causes my engine to rev up and down?

The idle is controlled by the idle air control valve and if it cannot keep the engine idling it will keep trying to rev the engine up to compensate.A vacuum leak, sensor that has failed, or an EGR system malfunction could potentially be the cause of the erratic engine you're experiencing.

Read more

Why does your integra rev up and down?

try checkin the mass air flow sensor..sometimes they do that...also have the computer scanned at an acura dealer if you cant fugure it out...the car might even have a recall from the factory over this matter..chack that too

Read more

What causes engine to rev up and down?

The idle is controlled by the idle air control valve and if it cannot keep the engine idling it will keep trying to rev the engine up to compensate.A vacuum leak, sensor that has failed, or an EGR system malfunction could potentially be the cause of the erratic engine you're experiencing.

Read more

Why does your engine rev up when you shift gears?

if the engine isn't reved enough it will stall

Read more

Why does Engine idle ruff and will not rev up?

if recently did tune up check firing order for misfire on wires..check oxygen sensors or throttle position sensor..also possibly idle air control sensor

Read more

What does it mean when your car's engine races revs up and down while it is warming up in the morning?

When an engine is warming up the car may idle erratically. This happens because the air may be to cold and the colder air will cause abnormal combustions to ensure in the engine. The computer is set to make the engine function under certain conditions, such as having the engine operate at an opti...

Read more

Why does the car idle up and down while in park?

check coolant level, also check for a vacuum leak.

Read more

Why does the rpms go up and down when the engine is in indle?

This is often the result , in fuel injected cars, when there is an intake manifold vacuum leak ( i.e. loose or disconnected vacuum line, intake gasket leak , injector seal leak or many other possible leaks in the air intake system ). It is also a symptom of a faulty or maladjusted throttle positi...

Read more

Why does my car fog up when parked?

When you park it, the car cools down and the moisture condenses on the windows.If you have the INSIDE of your windows fogging up, you have moisture inside somewhere.You may have a sunroof drain plugged, torn or missing door vapor barrier, leaking windshield, or leaking heater core.

Read more

What causes car to idle up and down when in park and then cuts off?

It is difficult to diagnose a problem like this via the internet, but it could be the air flow meter.A faulty air flow meter will often cause this type of symptom. Its a good place to begin the process of elimination, at least

Read more

What would cause a car to rev up and down?

The idle is controlled by the idle air control valve and if it cannot keep the engine idling it will keep trying to rev the engine up to compensate.A vacuum leak, sensor that has failed, or an EGR system malfunction could potentially be the cause of the erratic engine you're experiencing.

Read more

Why does the engine rev up when you start the car?

This is because the engine is cold. The oil is all at the bottom, and does not want to move around. So the engine revs up more because it is trying to produce heat and get the oil circulating as fast as possible. The engine runs in an open loop, meaning the computer has a preset running condition...

Read more

Why cant i rev my car high in park. Its a 2014 accord coupe i4 and when i rev it in park it only goes up to 3-4000 rpm?

It has a rev limiter. It designed to keep the engine from over revving and doing damage.

Read more

Why does my temp gauge keeps going up and down?

If the coolant temperature gauge is constantly fluctuating then the most common cause of this is a bad thermostat.If the thermostat is sticking or not opening and closing right then this will occur.It can also be a clog in the radiator or a water pump problem.

Read more

Why does your engine idle up and down while driving?

Could be your MAP sensor or Absolute Manifold Pressure sensor same thing usually mounted on or near the firewall and has at least two hoses"vacuum" going into it.

Read more

Why does my temperature gauge keep going up and down?

The temperature gauge electrical sender is positioned next to the thermostat, so it indicates the drop from 75 down to 70, when the thermostat closes.If this is not happening, usually it is because the thermostat is stuck in the open position and needs replacing.

Read more

Why do my revs go up when I change gear?

The revs of the engine are controlled by your speed and the gear ratios, so when you accelerate, if the clutch slips, the engine loses it's grip on the drivetrain and the flywheel spins more easily, hence the revs increase.So really the only thing that can make the engine work harder is the throt...

Read more

When stopped at a light why does car rev up and then back to normal?

There could be many reasons for this. If your A/C is on, or if your defroster is using the A/C, the PCM could be revving the engine slightly to keep the additional drag from stalling the engine. It's also possible you have a vacuum leak, such as from a disconnected vacuum hose, under the hood. Or...

Read more

Why does my car rev when changing gear?

The revs of the engine are controlled by your speed and the gear ratios, so when you accelerate, if the clutch slips, the engine loses it's grip on the drivetrain and the flywheel spins more easily, hence the revs increase.So really the only thing that can make the engine work harder is the throt...

Read more

Why does my engine cut out when I slow down?

When the actuator malfunctions, the engine gets no signal for idling speed and stops working.Clogged or restricted EGR Valve: If your EGR valve is clogged, dirty, or defective it can cause your car to stall, idle erratically, or sputter, depending on whether it is stuck open or closed.

Read more

Why does car engine rev when it's very hot outside?

I'm going to guess yo have the air on, that would mean that the idle compensator is out of adjustment and over revving the engine.

Read more

Why does my car over rev when I start?

Common causes of high RPM excursion at start-up are typically: large vacuum leak, throttle plate stuck open, cruise control stepper motor stuck in one position; faulty throttle position sensor, and/or faulty idle air control motor or solenoid.

Read more

Why is my cars rpm going up and down?

Most likely you have a clogged (or failing) idle air control valve.Take it out, clean it, put it back… should solve the problem.There's a disconnect between the amount of air the computer thinks your engine is getting and the amount it's really getting, so it keeps trying to correct itself and al...

Read more

Why does my 1989 bmw 750il when you press on the throttle pedal the and the car will not exceed about 1500 rpm but revs higher in park?

Your engine is in what is called limp mode. This is to prevent damage to the engine as something is seriously wrong. Take it to the nearest BMW dealer immediately.

Read more

Why does my car slow down then speed up?

Clogged fuel filter When you put your foot down on the accelerator and don't get the reaction you expect, it could mean there's a problem with the fuel system.The most likely issue is a clogged fuel filter.When the fuel filter is clogged, the fuel pump has to work much harder, resulting in a far...

Read more

Why does my Ford Focus over rev when I pull to a stop and over revs when changing gear?

There might be something wrong with the gears. Something may be jammed or stuck or they may just need changed out.

Read more

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.

Read more

Why does my car shake when parked?

If the vehicle shakes or the engine shudders a lot when stopped at a stoplight, or when parked with the engine idling, it might indicate the motor mounts or transmission mounts are damaged or broken.If the shaking decreases, it's a strong indicator the engine's motor mounts need to be inspected b...

Read more

Why does my car shake when it's in park?

Shaking or vibration may be caused by many different things such as faulty spark plugs, poor fuel pressure or misfires.Other things such as a faulty idle air control valve may cause the engine idle to drop below the normal idling RPM which may also cause the motor to shake or vibrate more than no...

Read more

Why does truck idle up and down?

An idle surge can be caused by multiple phenomena.The idle air controller is simply a computer-controlled motor that controls idle.There could also be another sensor that is telling the computer to compensate, and in turn, this causes the idle to surge as it looks for the correct RPM level.

Read more

Why would a 1997 grand am gt idle rev up and down?

A vacuum leak can cause that.

Read more

What goes up and down in a car engine?

The piston(s), the valves, the pushrods, and the rocker arms in an overhead-valve configuration all go up and down proportionally to the engine's turning speed.

Read more

Why is my speedometer going up and down?

Hello.The crankshaft position sensor will not cause a fluctuation in the speedometer gauge.If the speedometer is acting like this then most of the time this is caused by a failure in the vehicle speed sensor.When this sensor or the connection at the sensor fails then this will happen.

Read more

Why would my temperature gauge go up and down?

If the coolant temperature gauge is constantly fluctuating then the most common cause of this is a bad thermostat.If the thermostat is sticking or not opening and closing right then this will occur.It can also be a clog in the radiator or a water pump problem.

Read more

What does it mean when the car revs high and the speed does not keep up?

That sounds like a slipping clutch or auto transmission. In either case you need some work.

Read more

Why is my fuel gauge going up and down?

gas gauge goes up and down while driving on flat roads.The most common cause of erratic fuel level is caused by a defective fuel level sender in the fuel tank is defective or out of position or restricted from going all the way up to full position.

Read more

Why is my temperature gauge going up and down?

Hi There, It sounds like you may have a sticky thermostat or potentially a cooling fan that may be working intermittently.When the thermostat is stuck open it can cause the coolant to circulate constantly resulting in the motor never reaching the correct operating temperature.

Read more

Why does my engine idle high in park?

Cars are calibrated to idle higher in park than in drive so that the idle rpm won't undershoot too much when a load is placed on the engine (such as when shifting into drive).If your car is idling unusually high in park when it is fully warmed up, you probably have a vacuum leak.

Read more

Why does a car stall when stepping on brakes causes my volts to drag down and kills the engine?

Check for vaccuum leaks this could be your problem.

Read more

Why does my focus 1.4 cl lose all revs when you push on accelarator it goes up to 4000 then comes straight down and car wont driveleave it a day or so and it goesthen the problem re-occurs?

My car is doing the same thing. Try swapping the coil pack with one from the wreckers, it may be that or the computer. It only does it when it's hot, after running for a while and the hotter it gets, the worse it gets. (not overheating) Let it cool down and it's fine till it's hot again. I'll try...

Read more

Why does my truck rev drop when you accelerate?

My truck flutter and temperture gauge drop at the same time

Read more

Why does car speedometer hangs up at 45 when engines running goes back down to 0 when cut off?

well when the car shutts off it will cut the power to your accessorie of the vehicle which runs the speedometer fuel guage water temp. ect. But if you are driving turn off the key and then turn it to accessories on that's 1 extra turn right before starting point then your accessories will work wh...

Read more

Why does your car rev up and temperature gauge show cold?

Thermostat is gone, change it

Read more

Why does car engine shut down when its cold?

Don't know how cold your cold is but, it could be water in the fuel system (ice).

Read more

Why does my car slow down when I accelerate?

Any number of things can cause poor acceleration.Bad gas, clogged fuel filter, Clogged air filter, Bad vacuum lines to the transmission.Dirt/water in the fuel injectors, Bad Spark, Trouble with the electronics.Check the gas cap and make sure it is secured.

Read more

Why does my car jerk when slowing down?

When the engine RPM drops below the normal range of about ~800 RPM (for most cars), this often times will cause the engine to stall indicating a dirty or faulty idle air control valve.I would recommend having an expert from YourMechanic come to your location to diagnose and repair your idle air c...

Read more

Why would a car drop down when put in reverse and hop up when put in drive?

you may be idling a little to high but this sounds pretty normal because of the way the transmission is pulling the carRC

Read more

Why does your engine keep empting of water when you park up?

If you have proper combustion in your engine it actually produces water. The water that is emptying is condensation from the exhaust pipe because you are getting good combustion.

Read more

Why does my car shudder and stop when slowing down it is a vw polo 1993?

A 1993 VW Polo shudders and stops when slowing down is a sign of a bad fuel pump. It is also observable that there is a high pitched sound when the engine is first engaged.

Read more

Why is my car shaking in park and you just got a fairly new engine installed?

this car is known to have an appearance of a rough idle even when everything is fine and a history of short-lived motor mounts

Read more

What is wrong when your car sputters at idle and when you rev up engine it sputters then kicks in and fuel comes out tailpipe?

need to check your evap system or you have a blown head

Read more

1997 sunfireMissing when idle and wont rev up?

what type of motor is it? the quad 4 or the 2.2

Read more

Why does the engine rev on its own when the engine is running?

there is a little CPU chip which is smaller than your hand, the CPU chip is a computer it revs the car to warm up the engine, if you live in a cold place that is most likely cause

Read more

Why does your truck bounce up and down while driving?

Bad shocksthey cause extra bounce in the ride, replace if necessary.To Test:How to Test Your Shocks By an eHow ContributorShocks are an important part of your car's safety system. If they are not operating properly, you are not only getting a bumpy ride, you are also endangering yourself and your...

Read more

Whats wrong if when you have your mark vii in neutrual or in park and rev it up and the speedomiter goes up in speed and the odomiter clicks up in miles need help?

Low voltage, mine did that and was bad alternator

Read more

What makes my Jeep Engine rev up to 2200 rpm on start up?

may be use a super charger or a turbo charger

Read more

Why does my engine bog down when I give it gas?

Your engine either seems to bog down when you hit the gas pedal, or it takes a second or two to respond.An engine that hesitates when accelerating is either sucking too much air, not getting enough fuel, or misfiring.Here's what you might discover—and what you can do to fix the problem: Dirty air...

Read more

Why does my engine shake when I start my car?

Worn out spark plugs are one of the most common causes of engine shaking.If your spark plugs are dirty or worn out they will be unable to fire properly and create the spark your engine needs to ignite the fuel.This causes your engine to misfire.Replacing your spark plugs is typically inexpensive.

Read more

Why do you have to rev the engine to start up in your zahara?

im not entirely sure, but id assume it would be to build up torque so it can accelerate faster, this is common with most automatic cars, torque is the force of rotation, like push is the force of movement away from the energy source, torque is how many kg/cm2 the engine can create, creating more ...

Read more

Vectra 53 2leter when you strat engin its shaking and race going up and down?

its out of time needs reset ,

Read more

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.

Read more

Why does my car not heat up when idling?

The engine makes very little heat when idling, and if the thermostat does not close, the engine coolant temperature may drop low enough that you'll get no heat from the heater core.If the coolant level is low in some cars, the water pump may not provide any flow to the heater core at idle.

Read more

Truck acts like it is in neutral and revs up when in drive?

You do not say manual or auto?Very important to diagnosis, but here's a broad answer if indeed the transmission is not Kaput altogetherAUTO transmission fluid is empty and the bands have run dry.MANUAL slipping out of gear or clutch had itYou do not say if the truck will drive at all or not. Also...

Read more

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.

Read more

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.

Read more

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.

Read more

Why does my car die when it warms up?

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.The ECU or the coil gets hot and expands.

Read more

Why does your car rev hi when you start it?

It's not warmed up yet.

Read more

Why does 2002 T C V6 3 8L Temp gauge go hot when driving and settle back down in park when oil is good and antifreeze is good?

it could be a bad termostat, blown head gasket, tranny overheating if it a auto., or have coolant system flushed

Read more

Your car idles up and down when ac is on?

Probably because the compressor is cycling on and off to maintain temperature without freezing. Compressor on car runs slower RPM, compreesor cuts out and RPMs go up.

Read more

Why tachometer needle jumps up and down?

A cars tach jumps and runs with engine rpm.Sometimes if it jumps and changes engine sound,the throttle position sensor needs changing.If it jumps with no engine speed or sound change it means your alternator is going bad.

Read more

Why does my car shudder if revs low?

I have a similar thing in my 2004 Renault megane it doesnt always happen but sometimes it will shudder if sat in traffic.... I think it is something to do with the timing! but not surehttp//www.beaucroft.co.uk

Read more

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.

Read more

Why is my engine revs high without acceleration?

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.

Read more

What causes speedometer and tachometer to fluctuate at idle on 96 grand am and cause engine to rev up and down for some minutes then stall?

Do you have a check engine light? If so, get it scanned by a repair facility to make sure you don't do any unnecessary repairs. It could be many things, such as an o2 sensor or throttle position sensor just to name a couple. If you don't have. Check engine light, sounds like a faulty engine contr...

Read more

Why does my steering wheel shake when I slow down?

There are common problems that cause your steering wheel to shake when you apply the brakes.In order from least expensive to most, they are: dry guide pins, worn brake pads, and worn rotors.It's generally recommended if you replace the rotors, you replace the brakes, and grease the guide pins.

Read more

Why does my car roll forward when I put it in park?

If you are on a hill, releasing the brake causes the car to roll downhill until the engine flywheel is pushed against the parking pin.The gears and linkages from the wheels, through the drive shafts to the transmission and ultimately to the engine each have some play.

Read more

Does my car burn gas when I am in parked?

If your car is running when parked then it is burning gas. Cars use gasoline to run the engine.

Read more

Why does my RPM go down when I stop?

However, when the engine RPM drops below the normal range of 800 RPM (for most cars), it is more than likely that you are dealing with an IAC valve problem.In cases where this valve is clogged or is failing, your vehicle will stall instead of slowing to an idle after the release of the throttle.

Read more

Why does my car move while in park?

If Your Car Rolls in Park it Could Mean Your Transmission is About to Fail.If you have an automatic transmission, you expect your car to stay in place when you put it in park.But whether due to design or mechanical failure, if your car rolls when it is in park, you should to take it to a mechanic...

Read more

Why do your car ildle up and down?

Maybe your throttle positioning sensor is bad.

Read more

Why does your 1997 neon not accelarate properly and bog down It does it more when going up hill?

Sounds like the fuel filter. Could be bad spark plugs too. Check the fuel filter first. Easier job.

Read more

Why is my engine bogging down?

Bogging down is usually caused by one (or more) of three things.Running rich, running lean, or a weak spark.Running rich (too much fuel in the air/fuel mix) could be caused by several things.The most common cause is a failing automatic choke unit.

Read more

Why does my engine make a loud groaning noise when it warms up?

You have to locate the source of the noise then repost your findings.

Read more

Why does my steering wheel lock when parked?

A common reason for your steering getting locked is that, while parking the car, you've engaged one of its safety features.This happens if you turn off the car and turn its wheels a bit right or left.As a result, one of the lock slots will get blocked and you'll have a stuck car.

Read more

What does it mean when your car temperature gauge goes up and down?

If the coolant temperature gauge is constantly fluctuating then the most common cause of this is a bad thermostat.If the thermostat is sticking or not opening and closing right then this will occur.It can also be a clog in the radiator or a water pump problem.

Read more

Why does car shake when backing up and turning right?

because you have crashed into somthing you pillok, try looking where you are going first

Read more

When Start car up in cold weather and revs are very high wen started warm the revs are normal any ideas on the problem?

you probably have a gummed up Idle Air Control motor ( iac). . take it off & clean it, . .or go some place & have a throttle housing service performed. .

Read more

Why would Engine rev when clutch is pressed?

The engine might rev up when the clutch is pressed if the driver is still pushing slightly on the gas pedal during normal shifting. It is also possible for the driver to accidentally touch the brake and the gas at the same time without realizing it.

Read more

Why does my back wheel lock up when the car is in reverse?

The year, make and model info would help.

Read more

Why does Engine continues to rev for 2 secs when changing gear What is the fault?

Well it is an automatic I am guessing. It means your transmission could be slipping a bit, there is stuff you can buy to try and stop that. I don't know the exact name of it but you can get it an Wal-mart, or any auto store.

Read more

Why does your 88 sundance idle up and down only when its warmed up new plugs and wires also new fuel and idle control sensors?

check air filter or vaccum lines

Read more

Why does my car only turns off when gas needle goes crazy and drops all the way down to empty?

Multiple problems could contribute but I would need more details such as does it turn off on it's own or when you turn it off the needle jumps then the car stops running.

Read more

Why does your air in your car slow down when car slows down?

The charging system in your vehicle may be failing, Have it tested soon.

Read more

Why my 93 Ford Explorer 4.0 starts to ping and slow down while going up hill?

May have a damaged catalytic converter or a plugged fuel filter.

Read more

2002 dodge durango engine rpm jumping up and down?

Throttle cable is sticking. Located in the transmission. 2 Solutions exist: (1) Follow the cable to the entry point in the transmission, disconnect and by using a syringe, shoot a non-coagulating lubricant into the cable sleeve. (2) Have the throttle cable replaced.

Read more