|
| Search | Car Forums | Gallery | Articles | Helper | Air Dried Fresh Beef Dog Food | IgorSushko.com | Corporate |
|
#1
11-05-2009, 08:16 PM
|
|||
|
|||
|
Poor Gas Mileage
I have a 1995 Lumina with a 3.1 and I am getting really bad gas mileage around 12 mpg. I have asked several mechanics and they have said that is the O2 sensor. I have replaced this and it did improve the mpg slightly but it is still not the 29 it used to get. I have also replaced the knock sensor, and the throttle posistion sensor. What else could cause this drastic loss in gas mileage?
Thank you, 
|
|
#2
11-06-2009, 02:12 AM
|
||||
|
||||
|
Re: Poor Gas Mileage
Did this happen all at once or gradually? How many miles on engine? Check for proper EGR operation, vacuum leaks, PCV valve operation, & have entire system checked with scanner. Almost impossible to diagnose w/o vehicle in front of us.
__________________
 Bearwulf, the "howling Grizzly" of the north.MONOTONY is the worst driving hazard, so SHUT-UP when I'm driving. 97-Lumina LS 1891Argentine 7.65 with scope! Last edited by Bearwulf; 11-06-2009 at 02:20 AM. Reason: Add in.
|
|
#3
11-06-2009, 01:08 PM
|
|||
|
|||
|
Re: Poor Gas Mileage
Quote:
hows the air filter look?? i was getting a gradual decrease in mileage untill i found a mouse nest almost covering the ENTIRE air intake filter.  after i cleaned it... the mileage came back.. just a thought.. also make sure you dont have a brake caliper hanging up, that could cause a drag on the motor and it's not as obvious as most people think it is.... GOOD LUCK!
|
|
 |
POST REPLY TO THIS THREAD |
 |
|
|
