i got 2 questions about the OMP AND MPG -_-
11-08-09, 08:57 PM
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i got 2 questions about the OMP AND MPG -_-
OK WELL i got a 90 vert wit a 91 13b wit about 55k miles on it. i filled her up wit about 45 bucks T..T and thought it would last a good two weeks. ARN'T OUR CARS SUPPOSED TO GET 15-18 CITY and 23-27 HUGHWAY(so like 22-24 comb')that was 4 days ago and it seems im only getting about 12.5MPG W. T. F?
even today i was on the highway CRUISING not flooring it takeing it easy and my gauge shot down...has any1 else expierenced this and well this leads me to my next question...
I KNOW this mpg is wrong so i checked the codes and 20/27 came out the OMP and omp sensor. would the oil metering pump malfunctioning cause my mpg to be so low? i don't have that much of a lead foot and if i got a leak i cant find it nor is it leaving any puddles, and im not smelling and gasoline... i need help T..T
even today i was on the highway CRUISING not flooring it takeing it easy and my gauge shot down...has any1 else expierenced this and well this leads me to my next question...I KNOW this mpg is wrong so i checked the codes and 20/27 came out the OMP and omp sensor. would the oil metering pump malfunctioning cause my mpg to be so low? i don't have that much of a lead foot and if i got a leak i cant find it nor is it leaving any puddles, and im not smelling and gasoline... i need help T..T
11-09-09, 11:27 PM
#3
There are a lot of reason's for poor fuel economy. If you have not done so in a while, change your spark plugs, spark plug wires, inflate your tires, and new air filter. Basically do a tune up, this can be a huge source of poor fuel economy.
If you suspect a faulty omp, DO NOT IGNORE IT. Doing so can result in a blown engine.
If you suspect a faulty omp, DO NOT IGNORE IT. Doing so can result in a blown engine.
11-10-09, 08:29 AM
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Yeah, a failed metering oil pump will put the car into limp mode. It will default to safe timing and fuel values, and basically drive like a Metro on one cylinder. This could be most of your problem.
Additionally, a FULL AND COMPLETE tuneup is the first step when looking at a mileage problem.
Additionally, a FULL AND COMPLETE tuneup is the first step when looking at a mileage problem.
11-10-09, 06:18 PM
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thx for the help! im going to a garage tomorrow to check all this and yeah its been going into limp mode IF i go a like a 40min ride the engine light doesnt turn on right away, it flickers on and off...so i think it might be a short somewhere, all the same im still going to a garage tomorrow check it all out- hopefully wont cost me an arm to fix
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