Your motor will idle badly. The revs will not stay at a constant level, even when your engine has reached operating temperature. ***Sum's Answer***- the engine will idle bad, and it wont catch its idle when droping RPM's. It may drop to 500rpm, shoot back up to 1k then slowly figure its way out to 6000-800rpm. Overall, it will idle badly, and not know where its going. It may not be your IAC motor though, I had that problem in my 03' Cavalier and it wasnt the IAC, it needed a computer update.
ck for vac.leak or bad iac valve
Could be you have a bad IAC valve
where is the iac valve for 2003 expedtion Eddie Bauer
where is the iac valve on a 99 honda civic lx?
Where is the iac valve located on 2004 dodge 5.7hemi
The IAC is located on the throttle body.
either bad gasket under throttle body or bad iac valve
Low fuel pressure, bad IAC valve, vacuum leak, bad injector(s). You also need to check the EGR valve.
The location of the IAC valve depends on the kind of fuel injection system you have. On the Vortec V6 (93+) it's right on top of the air intake in front of the throttle valve. If you follow the air intake tube to the motor, the IAC valve will be in the intake manifold right where the air tube meets the manifold. The wiring for the IAC valve comes around behind the throttle cable bracket and plugs into the IAC valve.
The IAC is located on the throttle body. Simply unplug the dirty IAC and clean or replace the IAC.
one thing that happens is that it doesn't idle properly and stall out a lot
It did for my civic when my iac valve was disconnected. Car ran like crap also when put back together car ran better and not more smoke, I would get that checked out check your engine codes it will let you know if the iac is starting to malfunction
The 1992 Oldsmobile IAC valve can be found attached to the firewall in the engine compartment. The valve will be on the passenger side of the firewall.
The IAC valve is mounted on the upper intake plenum (manifold)
IAC sits on the top of the motor.
were is the iac locate on a 1999 mercury mystique
The cost for an IAC valve varies based on the car. Generally, it will cost between $30 and $60, depending on where it is bought.
It's under the throttle body. To get to it, you'll need to remove the throttle body and flip it upside down. The IAC valve is mounted by two screws to the throttle body, and it has a gasket that you will need to replace if you remove the IAC valve, so make sure you have a new gasket on hand if you intend to take off the IAC valve.
Idle Air Control Valve
bad iac valve or vac. leak
dirty throttle body bad IAC sticking (worn or dirty) EGR valve something else
Sorry. Not familiar with an "iac" valve. Could you please spell it out completely without abbreviating it?
There is no IAC Valve on the Tundra V8s. The ECU controls the idle speed via the Throttle Position Sensor.
A bad IAC (Idle air control valve) or a vacuum leak or both.
IDLE AIR CONTROL VALVE (IAC)Definition: An electrically-operated valve which allows air to bypass the throttle plate in a fuel injected engine to regulate engine idle speed.IDLE AIR CONTROL VALVE (IAC)The (IAC) is located under the Plastic cover in the middle of the engine compartment. Very easy to replace.There are two bolts and one plug.It should only take you around 10 or 15 minutes to change. Buy it new; it doesn't even pay to clean it. It works half the times. But it will go bad eventually…