PDA

View Full Version : Cracked manifold question



FF Racer
07-03-2007, 01:09 PM
Can a cracked exhaust manifold give these symptoms?

I'm getting erratic idle when the car is warm and is idleing more than 25-30 seconds. I also get a P0172 code (system too rich bank 1). The car also seems to lack in power in low rpm's. Narrow band A/F indicated a rich condition also...

I brought the car to the dealer and I at first thought that the EGR was bad. The apparently checked it and it's fine. The told me that the ECT (engine coolant temp sensor) was fked so I changed it with no result.

Mods are: Unichip (stock map), 2.5 inch exhaust w/ cat, injen, Boost sciences diverter valve connected on the brake booster line, hard pipes, colder plugs, custom msp smic, greddy EBC (not connected due to visit to dealer...)

FF Racer
07-03-2007, 03:03 PM
btw, if anyone asks...



i suggest just pop the heat shield off and check the manifold out. very easy to rule it out if there are no visible cracks.

I see cracks, the dealer doesn't, I think they are on crack... see what I mean. I just want to know if the simptoms that I'm experiencing would be linked the manifold.

FF Racer
07-03-2007, 03:05 PM
I'm also wondering if I don't have a Unichip with harness problems...