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
the engine runs at a faster rate than when the idle speed is lower.
Idle set too high or accelerator is sticking and needs lubrication.
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.
Check your idle, your idle might be too low so it is stalling your car.
Not knowing exactly what they did my best educated guess would be that the idle is too high.
Bad idle may refer to many things. Generally it means the idle is too high, too low, or there are misfires.
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.
Posssibly the idle is too high. TAke the idle solonoid off of the throtle body and clean it.
Could be that your idle speed is too high, or engine is running too hot causing the PMC to deliver a richer mixture,
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.
I would suggest that the Choke is switching off and then the idle is set too low
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.