86 22RE idleing radicaly

heep70 · Jan 17, 2007

A buddy of mine has an 86 22re that is idleing bad. Once it is warmed up it will idle drops down then back up to normal then back back down, back up, and back down etc...................

Here is more info.
Any ideas? :corn:

ToyRochon · Jan 17, 2007

The carb or efi? If its the efi its the tps sensor, map sensor either way they need to be looked at.

notstock · Jan 17, 2007

If it is EFI lower the idle below 900. Bet that takes care of it.

heep70 · Jan 17, 2007

Yes, it is fuel injected.

He has the idle set at 750 when it is operating right. When it acts up the idle drops and then rises back to 750 then back down, back up.......................

He had to replace the thermal sensor and the TPS just recsently. Also had to adjust the air/fuel mixture setting that is located under the little cap. He did all this to get it through emissions. The header caused it to fail.

Could adjusting the air/fuel setting be the cause? Which way does he turn the screw to get what mixture?

He has also tried pulling codes. It reads nothing.

64FJ40 · Jan 17, 2007

Maybe a dumb question, but...

When he replaced the TPS did he set it up correctly? As in, checking the resistance against the FSM specs at various gaps?

heep70 · Jan 17, 2007

64FJ40 said:
Maybe a dumb question, but...

When he replaced the TPS did he set it up correctly? As in, checking the resistance against the FSM specs at various gaps?

Niether he or I know anything about this. Could you explian how to do that?

The mechanic at the Toyota place told him to set it at some certian gap and it should be fine.

notstock · Jan 17, 2007

What year is the engine. I can scan & e-mail the procedure to you if I have the fsm for that year(which I probably do). I would be willing to bet the TPS is the culprit now that you have shared the above info.

64FJ40 · Jan 17, 2007

heep70 said:
Niether he or I know anything about this. Could you explian how to do that?

The mechanic at the Toyota place told him to set it at some certian gap and it should be fine.

I'll search around and see if I can find the info from when I did my buddy's TPS. In the mean time, I'd take up notstock on his offer.

64FJ40 · Jan 17, 2007

64FJ40 said:
I'll search around and see if I can find the info from when I did my buddy's TPS. In the mean time, I'd take up notstock on his offer.

Here you go:

http://www.4crawler.com/4x4/CheapTricks/TPS/index.shtml

notstock · Jan 17, 2007

Looks like everything you need is in that link. Double check settings after you tighten the screws, I have had them change after they are tightened. Be very carefull to set it correctly, you will have problems if it is not set correctly. A little movement of the TPS body will change the setting a lot.