My sons 4-runner will Idle good for 10/15 min. then starts Idleing rough.If we drive it as soon as we start it it seems to do good until you slow down/stop then it will not Idle good and the check engine light comes on.When I turn it off and put my jumper wire in and check the computer it flashes one time which should be normal.DOES ANYBODY HAVE ANY IDEAS???????????? HELP

 

whens the last time it had a tune up ?

 

TPS. AFM. Sounds a lot like mine would act.

 

Everything is new.Recently rebuilt.All of that is perfect.Has been running good.

 

Hey this is jim that got the tail gate from you.So was it your street or rock crawler that had this problem ? Did you have to replace them or what? Did you finish the crawler? how many 4-runners you have now? I thought about you when I was in T-town 2 times last week. Thanks for the reply .I will check/clean/adjust if possible.

 

This was on my 85 before I rebuilt the engine...ended up replacing the TPS and the AFM...both were pretty worn out and that solved things.

I have an 85 and an 87. The rockcrawler will never be "finished".

Good luck!

 

Possible vacuum leak? I've seen them where after everything warmed up and the hoses got soft a leak would develop.

 

have you had it in the rocks yet??????????