New Manifold

We may earn a small commission from affiliate links and paid advertisements. Terms

MXDesa

Senior Member
I recently broke my original intake manifold and went to the junkyard for a new one. Its the same identical manifold. Once everything was plugged up and bolted down, i stared the engine and the idle will fluctuate from 800rpm to 1200 rpms. While idling it will go up and down constantly. What could be the problem??
 
bad iac valve. it is located on the back of the manifold? how did you break your original manifold? did you use all the sensors from the new manifold? or did you use the ones from the broken manifold? i would still say bad iac valve.
 
I overtightened the left most bolt, and i used all the sensors that came with the manifold i got from the junkyard.
 
Back
Top