|
|
|
|
Joined: Jan 2001
Posts: 3,028
Hard-core CEG\'er
|
OP
Hard-core CEG\'er
Joined: Jan 2001
Posts: 3,028 |
I seriously just got 12 mpg. I noticed it was kind of wierd after the CEL came on and the code was P1131. After some research here I replaced the rear bank upper O2 sensor (pain pain pain) and finally (105000 miles) did the spark plugs and wires and a fuel filter...Then the charging light came on and had the alternator replaced. What else can cause such poor gas mileage?
I filled it up a couple of nights ago, and reset the trip odometer. At 22 miles the gas gauge read 3/4 of a tank. At 82 I was at half a tank. Filled up today and put in 7 gallons with only 82 miles on the odometer. WHAT IS UP?
I hope the O2 sensor and the plugs and wires and filter will make a difference. 12 mpg sucks! LITERALLY!!!
Last edited by Woodencross; 04/22/06 10:39 PM.
|
|
|
|
|
Joined: Jun 2005
Posts: 5,345
Addicted CEG\'er
|
|
Addicted CEG\'er
Joined: Jun 2005
Posts: 5,345 |
Check tire pressure and put car on jack stands and spin the wheels (to check for brake problems). What RPM does it idle at when warmed up?
"Always do the cheap and easy ones first."
1996 V6 ATX 96K miles
|
|
|
|
|
Joined: Jan 2001
Posts: 3,028
Hard-core CEG\'er
|
|
OP
Hard-core CEG\'er
Joined: Jan 2001
Posts: 3,028 |
Originally posted by Tony2005:
Check tire pressure and put car on jack stands and spin the wheels (to check for brake problems). What RPM does it idle at when warmed up?
600-800 rpm
|
|
|
|
|
Joined: Jun 2004
Posts: 1,231
Hard-core CEG\'er
|
|
Hard-core CEG\'er
Joined: Jun 2004
Posts: 1,231 |
well like tony said tire pressure and sticky brakes could be a possibility. You changed the plugs, fuel filter so those are out.
Got a lot of junk in the trunk? Hows the air filter lookin? Do you drive the car hard? Could be bad gas.
In my experience after I have done a tune up i get some low mileage for the first tank or so, but nothing ever like 12 mpg.
95 Merc Stique
Zetec 2.0 Auto
|
|
|
|
|
Joined: Sep 2003
Posts: 1,246
Hard-core CEG\'er
|
|
Hard-core CEG\'er
Joined: Sep 2003
Posts: 1,246 |
Are you hauling an extra dead body or two in the trunk of your car?
|
|
|
|
|
Joined: Jan 2001
Posts: 3,028
Hard-core CEG\'er
|
|
OP
Hard-core CEG\'er
Joined: Jan 2001
Posts: 3,028 |
Originally posted by KoKosMom:
Are you hauling an extra dead body or two in the trunk of your car?
SHHHHHHHHHHHHHHHHHHHHHH!
Today I drove it too and from work, appears to be doing MUCH better. We'll see...
|
|
|
|
|
Joined: Oct 2002
Posts: 11
New CEG\'er
|
|
New CEG\'er
Joined: Oct 2002
Posts: 11 |
What fixed my bad mileage and lean codes were 2 upper 02's and a DPFE sensor.
Also try looking for a vacuum leak.
|
|
|
|
|
Joined: Oct 2004
Posts: 2,116
Hard-core CEG\'er
|
|
Hard-core CEG\'er
Joined: Oct 2004
Posts: 2,116 |
sounds like he got swamp water for gas. Maybe car was getting used to ethanal level in the gas now?
95 SE MTX
svt exhaust
intake
deer killer
|
|
|
|
|
Joined: Mar 2005
Posts: 241
CEG\'er
|
|
CEG\'er
Joined: Mar 2005
Posts: 241 |
are your secondaries opening up? I got like 12-14mpg / loss of power when my IMRC was dead.
'99 SilFro SE V6 MTX
Alpine CDA-9833, 12" L7, Pioneer 6x8's, Fidanza Short Throw, K&N Drop-In, Spec1 Clutch/Flywheel, WR Headers / Y-Pipe, TBz Cat, PRT Roll Resistors
Mods in queue:
Trubendz Res. Magnaflow Ex.
SVT UIM/LIM/Opt.TB
|
|
|
|
|
Joined: Feb 2005
Posts: 562
Veteran CEG\'er
|
|
Veteran CEG\'er
Joined: Feb 2005
Posts: 562 |
He should be getting a totally different code if the IMRC isn't working, when I rebuilt my intake manifolds I was in a rush and forgot a connection for the IMRC and it threw me a P1518 code for Intake Manifold Runner Control stuck open, he should get a code close to that if his IMRC is dead.
'99 Spruce Green SE "Sport" 'Tour, 2.5L MTX...80K and running like it just rolled off the lot.
Tryin' to add an extra .5L ASAP
|
|
|
|
|
|
|
