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Remove your throttle body from the engine and completely clean it and the IAC. Then reinstall your TPS and set it up properly with this guide: http://www.4crawler.com/4x4/CheapTricks/TPS/index.shtml if that doesn't do it I would replace the TPS.
I cleaned the TB and bench checked the TPS (it's testing good per FSM specs) and reassembled and readjusted. I didn't clean the IAC yet, but the cold high idle and lower warm idle functions seem to work. The problem persists.
Its very likely the iac
The IAC would cause the ecu to cut injectors at ~2200RPM?
Idle problems and 22RE are almost always either the tps or the IAC. You say your TPS is good so clean the damn IAC. Its not hard and will be checked off the list or solve your problem.
I will clean the IAC for good measure, but is not an idle problem. The truck idles really well. The problem is that the computer is basically "rev limiting" my engine at 2200rpm. That's why I'm skeptical that the IAC is the culprit.
Do you have a buddy who's tps you can try? It's not unheard of to have them check out ok on the multimeter and still be bad.
I used my father's (he is a bus mechanic, he used to be a Land Rover tech) graphing volt meter to check the sweep for any spikes or dropouts. I found none. I can try the TPS from my 2wd 1 ton pickup, but I hesitate to. Last time I had it smogged, the tech suggested it might be bad.I can also try the one from my 1988 4Runner, but I thought they changed the values...?I'll continue screwing around with it when I get home tonight.Thank you for the help, SqWADoosh.
If its bad then no amount screwing around with it is going to help. A new one is like $100 if you can swing that.
It doesn't constantly raise/lower idle speed...
I was trying to point out that the IAC on a 85 is very primitive and is most likely NOT the problem......
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