2000 5speed v6 4runner. When I drive for long enough that the engine is completely warm and stop. Then I start it again. It will run normally for 30 seconds then the idle will drop. It will go from 400-900 and keep bouncing. If I drive it will bog and not go over 1500rpm. To get it going I need to rev the engine until it stop bogging and backfiring. Then its good to drive again. Also in second gear when I accelerate hard. From 3000-3200 rpm it will shake like its not getting gas and then be good thorough the rest of the rpms. What's going on?

 

Do you have a check engine light on or flashing?

 

If you figure out what CEL codes you have it will help us, help you.

 

No codes. I think it's the iac valve. I'm going to clean it out this weekend.