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check coolant level
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What would cause a 2000 Toyota Tacoma to surge at idle and while driving?
maybe the clutch
What causes a car to surge or idle up and down while in park or sitting at a red light?
could be a couple of problems. check idle control sensor or egr valve. good luck IAC idler control valve.
Why would a 1990 ford half ton surge while idling?
If its computer controlled engine, it more than likely a dirty or bad Idle Air Control Valve.
Why does my 1991 Subaru Legacy's RPMs surge from 500-1500 when it started today?
Mine was doing that for a while. I took the Idle Air Control valve apart and cleaned it. Problem solved. Its normal for the engine to idle higher when its cold though. Once it warms up a bit the idle should settle down.
What does a bad IAC cause?
the engine to stall and surge at idle
Why does your Zx2 surge at idle and in gear?
auto or stick shift
What would cause power surge in a 91 ford escort?
A power surge under a load is probably the transmission slipping. If its a manual transmission the pressure plate is slipping on the disc. If it is an automatic most likely it is a worn clutch pack slipping. If it surges at idle with the tranny in park the surge is usually a defective IAC (Idle Air Control) valve.
What would cause a diesel engine to surge at idle?
The first things to check are the air intake, the fuel pump/filter and the governor.
What would make a 1992 Honda Prelude SI 2.3 surge while idling in park but idle fine in gear?
Hi I had this problem. make sure your water level in the radiator is full,because there is a sensor kelvin
Why does your 1992 Buick Roadmaster idle up and down?
most common problem causing a surge while a car idles is the MAF-Mass Air Flow sensor is contaminated. typically this will throw a code (check engine light aka MIL)
Can a bad computer on a 1992 f150 5.0 make it idle fast and surge up and down?
Yes it could....but I'd start with checking the idle air control valve, check for vacuum leaks and check the fuel pressure.
What causes my 87 bronco ii to surge at idle then diewhen i restart it will go to high idle then the idle will slowly reduce down to 800 rpm and idle fine it only does this when it's a cold start?
on the left side of the intake is a round cylinder with wires plugged into it. this is the idle control. It is most likely dirty. take it off and clean it out with carb and choke cleaner.
