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A vacuume leak at the intake manifold or vacumme hose can cause a high idle. On carbuerated vehicles the idle adjustment screw may be set to high. On fuel injected vehicles, the Idle Air Control(IAC) circuit or valve may be faulty. On newer vehicles you may be able to get a trouble code to help pinpoint the problem. Chris
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∙ 19y ago
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What happenes if the Idle speed in a car is too high?
the engine runs at a faster rate than when the idle speed is lower.
What causes a car to surge when you release the brakes?
Idle set too high or accelerator is sticking and needs lubrication.
What could be the problem when you take car to shop to get tune up and other work Now car jerks when put in reverse and drive?
Not knowing exactly what they did my best educated guess would be that the idle is too high.
How and where do you change the idle speed on a 1993 Mitsubishi Galant SOHC?
The idle speed is factory pre-set, and no adjustment is available. If the idle is too high, or too low, you will be having other problems that will affect the idle. In cooler temperatures, it will take the engine longer to come out of fast idle, as the engine warms up to operating temp. If the idle is too high/stays at a higher than normal idle, then take the thing to get it repaired. Running a car in gear(automatic transmission) with a higher than normal idle, can damage the transmission.
Why does the car turns off if you are not pushing on the gas?
Check your idle, your idle might be too low so it is stalling your car.
What would cause an automatic 95 Celica to Jerk forward when placing it in Drive?
It's possible that the idle speed is set to high or low. When you shift into drive, power is applied from the motor through the transmission to the CV axles. If the idle is set too high there will be too much power applied to a "stopped" car. If the idle is set too low, then when the car is put into drive, the RPMs will drop and the car will apply more gas to keep the engine from stalling. Start your car and watch your tachometer. It will normally start off high (between 1-2k RPMs) then it should lower within a minute. Note the idle RPM. It should be around 1k RPMs (+/- 300 RPMs). If it's outside of that range or if the needle moves a lot, then there's something wrong. You can find the factory spec idle speed online if you look.
Why does a car idle too low?
A car can idle too low because there is a leak in the vacuum. Cracks or breaks on the vacuum hoses in the cars engine could be the cause of this.
What does a bad idle mean?
Bad idle may refer to many things. Generally it means the idle is too high, too low, or there are misfires.
What should I try next on a 89 Pulsar that sometimes idles way too fast- cleaning the injectors didn't help?
If the idle is constantly high, I would adjust the idle control on the left hand side (facing the car) of the throttle control body.
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,
Why would a 95 Saturn start with a jerk when put into drive?
Posssibly the idle is too high. TAke the idle solonoid off of the throtle body and clean it.
Why would a car stall after it warms up and comes to a stop?
I would suggest that the Choke is switching off and then the idle is set too low
