Is there any chance you can get a wideband O2? I wonder if your AFR is lean. I'm really starting to run out of ideas here. Would really help if you could get a good scan to see what'* going on.

Dan, will HP tuners give me the data u are looking for?

Don

changed the fuel filter too. will be testing fuel pressure tomorrow as well.

I think it should help. Have you made any changes to the PCM?

The car is stock except the air filter, no changes to the PCM.

Don

EUREKA!!!! Found the problem. I have checked this numerous times but nothing. It is the UIM. There is pooling under the sc. I wonder if the seafoam yesterday cleaned it out enough to let it pool. I dunno but there is now.

BTW, the flow test on the cat was fine.


Don

Sounds like it'* tiem for a LIM gasket replacement.

INTENSE-Racing.com: Lower Intake Gaskets (L67/L32)

It will be fixed under warranty, so I don't know which gasket they will use. They are going to do the intermediate steering shaft and all the engine/transaxle mounts too. $50 deductible on my service contract. The good thing is that I have checked and verified everything else that could have caused this problem. LOL. A bit of a headache but it is good to know. When they get it fixed it is getting a tranny flush, filter and shift kit. Radiator flush and all the fluids replaced with Royal Purple synthetic.

Don

Ok, intake manifold gaskets changed, new coil packs. Problem got a lot better. #1 Cylinder is missing a little. Have new autolite plugs and borg-warner wires to install tomorrow. We think that will solve it. The gaskets were toast. I will let you know.

Don

Glad you got that fixed. That problem can really mess up a engine.

Not quite fixed yet, but we'll see.

Don