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Re: where is the iac on a 2002 ford escape 4 cylinder
I IAC is along the intake tube from the air filter housing to the Throttle body. There's going to be a two wire harness. It may even be on the air filter housing on the throttle body side. Good luck and hope this helps.
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I would have it scanned and check what cylinders are still misfiring. I would change the ignition coil for that cylinder and see if that fixes the problem. If the misfire is still there...the PCM will likely need replacement.
On 4 cylinder engines: The oil pressure sending unit is located in the rear of the block near the oil filter housing
On 6 cylinder engines: Sending unit is located near the oil filter housing behind the air conditioning compressor, on the front side of the block
The IAC vavle is located behind the EGR valve on the driver side of the motor. You will disconnect 2 hoses and unplug the wire harness from the system. The unit will come right out. Just make sure that the hoses you take off go back in the same place. Also make sure that you have the negative battery wire disconnected. I had this same issue on my 2001 Escape, had to replace both the EGR and IAC so check both carefully.
If it's not idling and has problems starting, it's probably the IAC motor. It's located on the throttle body. Follow the airfilter box all the way to the engine, where the rubber flex hose attaches. The throttle body should be the first aluminum part you come to. Attached to the side you'll find small little aluminum part with a small wire harness attached. Unplug it, take the IAC motor off and clean inside with carb cleaner. This should fix the problem with the idle.
Sounds like it could be your Idle Air Control valve (IAC). The IAC does as it sounds and controls the idle in your vehicle. When these go bad, you can either clean them with a throttle body cleaner or replace them. Most people replace them as they are normally not very expensive and relatively easy to replace. The IAC is located on the throttle body which is where the air duct hose ends as it comes out of the air filter box. It is normally held on with a couple screws and just needs to be unplugged and plug the new one in. Please, please let me know if you have any further questions. If you can't find the location of the part let me know. Also if you don't think the IAC is your problem and have addition information that could point to something else, let me know. Here is a picture of what you are looking for:
This is the IAC for the 6 cylinder engine but it is different and more expensive on the 4. Let me know if you have the 4 and need a picture of it. Thanks for rating my response and for using FixYa!