Engine Performance problem
1999 Pontiac Bonneville 6 cyl Two Wheel Drive Automatic 108000 miles
I have a '99 Bonneville with 108K. The car at times, espicially when first starting out acts like it has bad gas and has no power and seems like it is missing. It isn't bad gas, because it has done it every tank for a long time. The gas mileage on the car is also dropping.I am down to 16mpg in town. I think it also might be going through some antifreeze, as that is what is smells like at times. I have had the plenum (?) On it replaced a couple of years ago because it was going through antifreeze. I was told that I should also have a backpressure test done to see if the catalytic converter is plugged. Any suggestions?
have the same problem?
Thursday, November 6th, 2008 AT 10:16 AM