2002 Pontiac Bonneville Repair Question
Topics covered: Engine, Air filter, Black smoke.
Mileage: No information provided.
Mileage: No information provided.
Asked on April 23, 2008
2002 Pontiac Bonneville Poor Fuel Economy
The cars runs well but the fuel economy has dropped 100 miles per tank. I changed the fuel filter, PCV valve, plugs (very clean old ones). I suspect the heated oxygen sensor. How do I change it? Also, does this model have one or two of them?
Thanks you
Asked by wbullockAnswer
Replied on May 1, 2008
No that wouldnt be the cause.
check your air filter.
and get a bottle of chevron techron, fuel system cleaner, works wonders!
do you have white or black smoke coming out of the exhust? is your check engine light on?