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Author
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Topic: Slower quarter times & poor gas milage, why??
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Zach281
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Member # 171
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posted
 
 
Last summer I was running consistant 14.7s, but I was at the track on Wednesday and was barely hitting 14.9s... My gas milage has also dropped significantly, I was getting 250 miles on one tank, now I'm barely getting 200. My only modification has been a Prochamber. Any ideas??
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- 99 Cobra - Rio Red - Convertible -
- 94 Red GT - Sold 02/26/03 -
Posts: 361 | From: Rocklin, CA | Registered: Feb 2001
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Primer GR40
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Member # 476
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posted
have u changed air and fuel filters and given it a tune-up??
tried a bottle of injector cleaner?
Posts: 2108 | Registered: Sep 2001
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Stimson
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Member # 51
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posted
What were your trap speeds? Trap speeds reflect your power to weight ratio going down the track. They're a better indication of what power you're making compared to ET. As for your MPG.... pull the codes from the computer to start with. EGR and O2's are common sensors to cause a decrease in fuel economy.
Posts: 2373 | Registered: Jun 2000
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JoeT
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Member # 298
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posted
mileage, check plugs, wires, cap/rotor, air filter. last resort 02 sensor.
running 14.9s in wednesday's 90+ heat and 2000 ft. density air doesn't sound too bad to me. Could be equivalent to your previous 14.7 run. Was it much cooler than wednesday? I bet it was.
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1984 Ford Tempo AOD--- RIP
Posts: 6785 | From: San Jose | Registered: Jun 2001
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Zach281
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Member # 171
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posted
I was trapping around 91-92 mph. The car has 125,000 miles, I've put on around 7,000 since the last time I ran it. I did the whole tune up thing(wires, plugs, rotor) about 15,000 miles ago, I'll check out my air filter and try some injector cleaner.
How do I pull the codes from my computer?? How would I know if I had a bad sensor? Also, how often should I change the fuel filter?
[ June 01, 2002, 03:15 PM: Message edited by: 94RedGT ]
Posts: 361 | From: Rocklin, CA | Registered: Feb 2001
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