Missing out problem with 2003 Chevy Silverado SS AWD Turbo

Deryl · 05-21-2008, 05:31 PM

Problem is that at times (maybe once a day) #6 cylinder will start missing out - followed by #2,4 & 8 cylinders missing out. Has miss fire code and a lean system bank 2 code. Bank 2 - sensor 1 oxygen sensor will drop to 0 & stay. Have replaced convertor on that side - has spark & injector pulse when missing out. Just don't understand - Any suggestions on what I'm missing?

mudseeker · 05-21-2008, 10:27 PM

interesting

when does it happen, such as engine temp and other driving conditions?
how many miles do you have on it?

if it's effecting all cylinders i would lean towards a head gasket.

mudseeker · 05-21-2008, 10:32 PM

Quote:

Originally Posted by Deryl

Bank 2 - sensor 1 oxygen sensor will drop to 0 & stay.

this has me concerned also, how does it perform when you don't have the miss? does it keep up with the bank one sensor?

Deryl · 05-22-2008, 07:33 AM

Quote:

Originally Posted by mudseeker

this has me concerned also, how does it perform when you don't have the miss? does it keep up with the bank one sensor?

Runs great when it wants to. Seems like #6 cylinder starts missing & then oxygen sensor starts dropping. Bank 1 sensor performs good & no misses on that bank. Never seems to happen cold, weather doesn't seem to affect it either. Only cylinders on bank 2 are affected - has about 61K miles.

05-21-2008, 05:31 PM	#1
Deryl Junior Member Join Date: May 2008 Posts: 3	Missing out problem with 2003 Chevy Silverado SS AWD Turbo Problem is that at times (maybe once a day) #6 cylinder will start missing out - followed by #2,4 & 8 cylinders missing out. Has miss fire code and a lean system bank 2 code. Bank 2 - sensor 1 oxygen sensor will drop to 0 & stay. Have replaced convertor on that side - has spark & injector pulse when missing out. Just don't understand - Any suggestions on what I'm missing?

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05-21-2008, 10:27 PM	#2
mudseeker mod-o-tator Join Date: Feb 2006 Location: michigan Posts: 4,496	interesting when does it happen, such as engine temp and other driving conditions? how many miles do you have on it? if it's effecting all cylinders i would lean towards a head gasket. __________________ member map add yourself alldatadiy why is it, when i push one for english, i still can't understand the person on the other end?