I let it idle and warm up for a min then it starts idling all choppy like it's got some nasty cam. Then you can really start to hear a leak. Then cylinder 2 or 4 shuts down and the leak sound goes away. I'm lost on this one.
I let it idle and warm up for a min then it starts idling all choppy like it's got some nasty cam. Then you can really start to hear a leak. Then cylinder 2 or 4 shuts down and the leak sound goes away. I'm lost on this one.
This is what every plug in bank 1 looks like. It doesn't make sense.
Fould Plug Bank 1.jpg
once it warms up it goes into open loop and uses the 02 sensors to make adjustments to the a/f ratio...an exhaust leak could throw the 02 reading off and cause a rich condition
2008 GMC Sierra SLE....370ci LY6 with some goodiesSOLD
1995 C2500- LS1 swap with a mp112
build thread- http://www.ls1truck.com/forums/lsx-t...-ls1-swap.html
That makes sense but the leak is on bank 2. I swapped o2's from bank 1 to bank 2 hoping the code would follow the sensor. But no codes yet so I wonder if the sensor is just bad. An exhaust leak doesn't cause this many problems.
Originally Posted by emmerich5.3
Those plugs look ugly. They should look a little more like this...
1969 Chevy RCLB C10 350/TH400 SOLD
2007 Chevy RCSB 4.8 4x4 LS SOLD
2008 Chevy RCSB 5.3 4x4 LT SOLD
2010 Chevy CCSB 6.2 4x4 LT SOLD
2005 GMC CCLB DRW 6.6 Duramax 4x4 191,000 and counting
2013 FORD CCSB F350 6.7 Powerstroke 4x4
That's what bank 2 looks like. I think this goes farther than exhaust leaks. The last thing i did was re-seal the hot side and swap o2's from bank 1 to bank 2 so I could rule out p0151. I pit it back together and this happened.
After letting it warm up it shuts off cylinder 2 and the leak goes away. Weird.
The leak sound I should say.
What do you mean by it shuts off cylinder 2?
Bank 1 o2 was bad and the log is cracked.
Last edited by EmmerichLSx; 10-17-2010 at 06:34 PM.
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