I have a '99 toyota 4runner 6 cylinder and it will idle very high as if it were extremely cold for like 15 minutes after it's started, when it used to kick down after 3 or 4 minutes. It's also stalling here and there at traffic lights ( only after it has warmed up and kicked down of course), not very often though. An ideas? Thanks!

 

I would start with testing the TPS.

 

Is there a simple way to test? I'm not experienced with auto electronics. Also which one is it, because I think the idle control sensor is also right there at the throttle body right?

 

The TPS is tested with a volt meter and comparing the readings to the FSM. The IAC is underneath the throttle body which can be cleaned.

 

Search for: tps adjustment <your engine code>
gonna pop up.

Take your time adjusting it. It can be finicky

Go buy a 20-40 dollar Voltmeter. You will need it again some time

 

Ummmm......

This thread has not been replied to since 2009.....

 

It has now

 

thread archeologist in training

 

You know these threads just don't find themselves!