I have an 89 Pickup, 2 WD, Manual Transmission with a 22-RE that has almost 140,000 on it.
Basically, lately it's been idling rough when warm, and a little harder to start when warm. It runs fine otherwise. On a warm day, when the engine gets nice and warm, the engine can run very rough almost to the point of stalling, though it never actually stalls. The Check Engine light has never come on either. Just a couple days ago, I jumped the computer and pulled the codes, and it was all normal. Any ideas on what to check now?
It has a new Toyota Starter and fuel filter that are maybe a year old, fairly recent cap and rotor, new air fliter, just changed the oil and filter, and i run injector cleaner through it every oil change. A few months back, my vehicle failed the timing portion of CA smog test and I successfully re-adjusted the TPS myself thanks to a guide on the net.
I have been told that by someone that supposedly knows their stuff that I need a valve adjustment. I'm going to look into getting this done in the next week or two. This wouldnt cause a rough idle ONLY when warm though, would it?
Thanks.