Need advice on Chevy 8.1 Vortec engine (2003)
We have experienced loss of power going up long steep grades. and the engine light on. 3 times. After the second time , a truck service repair said the 02 sensor (bank 1 & 2) probably came on due to...
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Had the exact same problem over a period of about a year, got worse gradually.
Changed the fuel filter and Oxygen sensors. No help.
Type of fuel won't change it either.
Cleaned the MAF sensor...problem cured.
The O2 sensors were detecting that the air to fuel mixture wasn't right and set the check engine light.
What code are you getting for the Check Engine Light?
I was getting P0150 and P0151 codes.
Changed the fuel filter and Oxygen sensors. No help.
Type of fuel won't change it either.
Cleaned the MAF sensor...problem cured.
The O2 sensors were detecting that the air to fuel mixture wasn't right and set the check engine light.
What code are you getting for the Check Engine Light?
I was getting P0150 and P0151 codes.
