Hesitation and Random Idle Problems

[LoserCard]

So far my car has been through a lot and it is really wearing down on me. I would like to try and isolate the problem as much as possible and it is really hard to tell what is going wrong so I am asking for anyone's help.

So first off, when first starting the car after it has completely cooled off for a while, I turn over the engine and it idles at 1500 like normal for about 1 second then down to 200-300 and will bog out if I don't feather the throttle for about 10 seconds. After that, it will run fine with the exception of problem two.

Problem two is, if I am maintaining RPMs anywhere between 2000 and 2900 there is hesitation and it feels like my engine is misfiring almost. It doesn't die or anything and I am able to accelerate fine past 3000rpms.

Also, very randomly, my car will bog for about 5-10 seconds worth and die after getting off the clutch if I don't feather the throttle. If anyone could help me out that would be great. Thanks!

[DamonDread]

What steps have you taken to isolate the problem so far??

[LoserCard]

Well so far I have check my spark plugs and wires, cleaned my MAF, cleaned my iacv, and checked for vacuum leaks. My my problem sounds really specific so I thought some people might have some insights. I can accelerate perfectly fine so I don't think that is fuel related. It is the hesitation between 2k and 2.9k that bothers me.

[LoserCard]

Alright so I have searched around and how do you test the voltage of the maf and tps? Also is there any way to test my o2?

[laxands13]

Well i was gonna say i had a similar problem with the hesitation and it was a fuel injector, but you already tested that i guess. can't help you out about testing voltages though, sorry

[Beamerme]

Have you checked your timing? the compression? all the basic things you need to check for you have already checked for, but think outside of the box and fix your car. Have you done any recent work to your car? ex timing chain?

[LoserCard]

Definitely not anything mechanical because it is intermittent.

[DamonDread]

Intermittent doesnt mean not mechanical. You test your electrics with a Voltameter, use the search to find the specifics that you should be looking for. IT sounds like a fualty injector to me. KA are notorious for this.

[LoserCard]

Hey where in the FSM does it say the proper readings for the TPS and MAF. Also what I am checking for the injectors, the ohms?