|
|
10-26-2009
I have a 97 grand prix with 136 mile with a 3800.I am getting 12-14 mpg in town I have put new plug and wire and a new fuel pump and fuel filter 800 miles a go.All fuel pressure are good And some times it crank 5-6 times before it starts No CEL come up beside that it run good. thank you
10-26-2009
Well, considering my 08 GP is rated for 18 mpg city, 14 mpg isn’t overly bad. That being said I would say someone messed up the spark plug installation. Maybe it is a disconnected wire or broken plug possibly. Also, if your car has over a 100k, the O2 sensor is on borrowed time, getting good mpg with an in accurate O2 sensor is nearly impossible.Keeping in mind bad mpg can be caused by a dozen things. Good luck.
| « Previous Thread | Next Thread » |
| Tags for this Thread |
| Bookmarks |
Bookmarks |
