Surging idle

[killzone90]

Just switched 22res in my 4runner. It keeps surge idling real bad. Where shld I start. Tps or something else

 

[fourwd1]

Guessing you mean the isle surges. What's the idle rpms ?
Under what conditions does it surge ?

 

[SV_Dude]

I would start with double checking your vacuum lines. Usually an inconsistent idle is caused by vacuum leaks. Did you re-use any vacuum lines or did you replace them?

How does your throttle body look? If it's dirty you may want to take it off and clean it out. A dirty throttle body could also be an issue too.

 

[BoatRacer]

Mine dose this on occasion in the summer when I'm using the A/C. I'm just too lazy to fix it. Maybe it's something that easy though, check to see if yours is on. Otherwise, I would be searching for a vacuum leak as suggested.

 

[killzone90]

It does it at idle the whole time its running. I reused vacuum lines. I already checked timing and changed and set Tpms. I think its vacuum lines r wrong

 

[Schmutz]

like so many of these threads, this one just ends on a cliff hanger. did anyone figure it out in the end?

my sons 89 with 3.0 V6 did the same thing and I'm trying to research solutions. please share if you learned something to help