Post y-pipe upgrade I am getting Charge Air Cooler Temp (P007D) and Boost Sensor (P007D) faults. I've taken the charge air cooler off the top, and I don't see anything that is obviously wrong.

My current hypothesis is just that I have air leaks between the charge air cooler (top part) and the super charger (bottom part). The y-pipe kit I bought did not come with a new charge air cooler gasket, so I reused the one that was on there. This is the manifold gasket (C2Z17248).

My question is... would a bad seal between these two parts result in air leaks that would be likely to cause my Boost and Temp faults? It seems reasonable, but I'd love to hear the opinions of more experienced people. I see no evidence of RTV on this one, so I'm assuming that this probably needs good rubber to make a good seal vs. a bead of RTV. At this point, I'm ordering and replacing this gasket either way, but it would be good to know if I should be looking for something else.



Reused this gasket


Would a bad seal with this surface cause my temp and boost faults?

Thanks in advance!

 

Oh man, folks with a lot more knowledge than me will surely chime in... but I would go over every connector/plug before taking major sutf apart.

 

Yeah - I did check all the plugs and wires first. It would have been great if it had been as simple as a loose sensor plug!

 

I may be off base - did someone here point out two connectors back by the symposer that use the same connector body, so that two plugs could be swapped and plugged into the wrong receptacles?

Just a thought.

 

Yeah - the Onca Engineering video series mentions those plugs. I have double checked all of the plugs and sensor connectors and they all look good.

 

Only way to know for sure is do a smoke test.