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Old Sep 18, 2006 | 10:25 AM
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Black98supervette
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Default Help Needed!

This might be a simple problem for some of you vette gurus so here's my problem. I put long tube headers opn my 98 c5. I left the cats on and the O2 sensors. The headers do not have the air runners on the top of the headers so I know the o2 sensors are reading that. But it isn't just runnung rich or lean. It seems fine at idle, but when you go to accelerate it feels like it is missing. It shakes the car horribly bad and backfires. It is also throwing this code: P0157 Heated Oxygen Sensor (HO2S) Circuit Low Voltage Bank 2 Sensor 2. I was going to put the O2 sims on there and get it tuned and see if that helped, but I wanted to ask you guys first. Any help would be greatly appreciated. Thank you.
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Old Sep 18, 2006 | 10:44 AM
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Default another code

It just now threw a po654, engine speed output circuit, code also. Thanks.
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Old Sep 18, 2006 | 12:10 PM
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Default anyone?

Can anyone help?
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Old Sep 18, 2006 | 03:05 PM
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Low Voltage Sensor 2, bank 2 is, I believe, the aft O2 sensor on the passenger side. Could be a bad connection or a failing O2 sensor.
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