MY CAR SEEMS TO BE BACK FIRING AND IT IS DOWN ON...
1996 Mercedes Benz S420
November, 18, 2012 AT 4:15 AM
My car seems to be back firing and it is down on power. The car starts up fine. Ive had it 2 and a half yrs and used mainly reg gas. It is also sticking in 1st and 2nd gear 40 mph and 60 mph especially going up hill.
could this be a cat problem or hopefully some thing else?