Help!!

[blacksandtc]

ok, i have the ZPI Stage 1 turbo. The other day my blowoff valve just stopped working. However the car drove fine, until one of my intercooler pipes popped off. I got the car home and fixed it. But now my car idels funny.(RPMs go up and down). Then when I drive it, it bucks back and forth. I'll put the pedal to the floor and I get no power. I reset the ECU and the car drove fine for a mile or so...then it went right back to the way it was. Oh..and car shoots thick black carbon out the exhaust pipe, and when I say thick, I mean thick. Its all over the back wall in the garage. I'm thinking its vacuum leak (maybe) or a sensor. Can someone help me?

[H.Series tC]

If your BOV stopped working and didn't get it fixed that would over pressurize the system and totally screw with your ECU. That would then provide a chain reaction through out the rest of your system. Eventually that could lead to loss in power, dirty emissions and that bucking you were talking about.

[navylife59]

Go to Autozone or other place to get your ECM read for codes. Better yet, being a turbo owner you should have your own OBDII/CAN scanner. Post those codes here. The MAF could have been damaged, loose intake line, vacuum leak, blown TB gasket, blown intake manifold gasket, or blown head gasket. I wouldn't count out a damaged Bank1Sensor1 A/F wideband sensor that could have been whacked by a turbulent surge from the turbine when the BOV went south. Your ECM maybe going into the default "safe" mode. Don't drive your car, if possible, till this is figured out. You might end up damaging your motor more than it already is.

This is the main downfall of turbos, no warranty help from the Dealer.

[blacksandtc]

Thanks for your help guys but I found out what it was. I had a small crack on one of my intercooler pipes and air was getting thourgh. Fixed!!!

[navylife59]

Phew! Good catch. Glad it was as simple as that.

[blacksandtc]

Me too. Its the story of my life. lol