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I hate to bring this up again, but I need help. I have a 1990 2.5 TBI wrangler that is killing me! I say I've been throwing parts at it, but given it's age everything I've done was either bad or well on its way. Now that almost everything has been replaced including the IAC I need help adjusting it. I assumed the IAC was in the correct position when I replaced it, but I'm suspect the PO had adjusted it when some of these parts I replaced went bad or possibly when they plated off the EGR (I replaced the egr and cleaned the egr tube) and now I find myself trying to adjust the IAC. I've adjusted it twice. The first time I was very close, but was not perfect so I adjusted it a turn more and it's acting up again. I've ready your very helpful advice, but call me slow I could use a bit more help or even pictures on how to do it the way you describe. The adjustments I made were before I found this page and I was told to just unplug it adjust it to 3500 rpm turn it off, plug it in, start it up for a minute then reset the ECU and I'd be good to go. Which is "close" to what I read here but miles away too. It did make it much better, but one more turn and it's back stalling out again. Can anyone give me pictures or better yet a video? I've hardly been able to drive the jeep since I purchased it.
Sabueso posted a topic in Jeep® YJ Wrangler, TJ Wrangler and LJ WranglerHello All, This is my first post and hope for the best. My 1990 YJ Wrangler Jeep 2.5 TBI starts well in the morning, heats up to temp and can ride for about 35 minutes. After which it starts to act as if it wants to turn off. If I step on the gas it kind of coughs. What I do is pull over and while in neutral it turns off by itself. I wait about 10 minutes, turn it on and we’re almost back to normal, just enough to make it home. If I wait longer it turns on and drives well. Thanks for your help.