It sounds like the IAC valve which is very easy to change on the 97-98 models but first check to see if there is a vacuum leak. Hope this helps. The IAC is the Idle Air Control valve and is on top of the intake manifold driver's side.
A faulty camshaft can cause your 1991 Nissan Maxima to idle erratically. A diagnostic test could verify the cause of the improper idling speed.
Could be IAC idle air control, or maybe a vacuum leak check hose first
fix the vacuum leak
"How do you move the idle tensioner for a 1998 3 litre dodge?"
where is the idle control motor for a 1998 ford escort
Might be the throttle Position Sensor or switch - causes it to idle erratically - jumps up and down in rpms. Got one the other day for a different type of car - was about 50.00. Not sure what engine you have - so don't know how to tell you to locate it. Might have your mechanic check that out - see what he says.
I have a 99 that did the same thing try the fuel regulator?maybe
how can I clean the Idle Air Control Valve on a 1998 Nissan Frontier
Yes. IT can make the engine run to rich, and then cause misfires
Check the vacuum system on the car an at the transmission. If the car is computer controlled, check the computer codes for a possible problem.
Idle is set automatically by the PCM utilizing sensor on th intake manifold to limit the Idle Air Control Valve. If any of these sensors malfuntions or unfiltered air is entering the manifold, your idle will be up and down continously when in park or neutral.
You cannot adjust the idle in a 1998 Cadillac Catera. It is computer controlled. If the idle is not at 750 rpms then there is another problem with the engine. Check for codes with an OBD2 tester.
The idle speed is computer controlled and is not adjustable.
Check Vacuum lines Also I think there is a "plate" kind of deal on the top of the engine that connects the spark plug wires to the plugs (it lifts off in one piece) and sometimes one of these connectors cracks ( probably due to heat) and that may be the cause of your problem - niot running on all cylinders all the time
it controls idling of car engine, without it it will not idle..
You dont adjust the Idle disconnect the battery for 10 mins and reconnect and the computer should relearn it idle .
Idle slows down to a stall when you stop or slow down when AC is running. How do I adjust idle or is something else wrong?
A 1998 Chevy Prism's idle speed is computer controlled. You will have to take it to a garage to get it set. However, the idle speed could be altered if, say, your spark plugs are seriously worn. Changing them may restore the original idle speed.
The idle adjustment screw is located on the IACV behind the manifold on a 1998 Honda CR-V. Open the latch on the IACV then take an screwdriver and tighten the adjustment screw.
Do you mean that it doesn't idle good? If you are having idle problems and everything else checks out, then I'd say it's the IAC valve (IDLE AIR CONTROL) valve which is easy to change on the second generation Marks, on the top of the intake drivers side.
Idle speed is computer controlled and is not adjustable.
Hyundai accent idle speed
Idle speed on a 1998 Chrysler is computer controlled and is not adjustable. If idle speed is incorrect, you have a sensor, actuator, or mechanical failure. Places to start are, check for engine fault codes. Check for vacuum leaks.
It depends on the year. If you can't get the idle down, check for vacuum leaks. That seems to be a primary cause of high idle, especially for the TBI engines.