P2188 DTC running rich idle bank 1

[fvescio]

I reckon leak from improper assembly or breakage. That one is common for me here cause the workshops are none too careful and the rubber and plastic don't hold up well in the heat. Intakes loose or broken, pipes broken. Bolts snapped off in the exhaust manifold.

I just had it in a Trailblazer. I searched everywhere for the leak. Finally, I found someone had snapped off a 10mm bolt holding the inlet manifold on behind the alternator. Last place I looked, ha ha. The other bolts were overtight and it had caused the plastic manifold to warp away the tiniest bit from the motor.

This one takes some looking sometimes cause you can't see the cracks.

Hi wannaeatyourbrains and thankyou for the suggestions and article!

I did have the plenum off after replacing the water /cap inlet gaskets and installed a new gasket. I will check I haven’t crimped the intake pipe though……

I will also work through the article and feedback what I find..

really appreciate you help….,thanks again