94 GT - Codes 172, 176
 

Codes indicate lean oxygen sensors on both sides. I changed the upper intake gasket, cleaned the MAF, and cleaned the EGR. The check engine light comes on occasionally after accelerating lightly. The car also pings under light load. The pinging and light do not ever happen at the same time. I can't find any vacuum leaks. Where do I go from here? Do I try a new MAF? A new TPS?

All help is appreciated.

Bob

could be injectors... try cleanin the maf first...then get the injectors tested

Thanks for the tip! That was one of my thoughts as well. The car is 11 years old and only 40k miles. Things go wrong due to lack of driving.

Bob

yea i just had mine rebuilt but the are relatively inexpensive to buy a new set... i had three only runnin at 20% effic