Poor Fuel Economy?
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Junior Member
Joined: Sep 2010
Posts: 24
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From: Western NY (lockport)
Car: 1986 Trans Am
Engine: Stock 305
Transmission: 700r4
Axle/Gears: not sure...
Poor Fuel Economy?
After much work I've assembled all the pieces and got my 86 trans am running decently. I'm only getting around 12-14 MPG's though. What should I expect to get for fuel mileage? Its a cc-qjet/305. The CEL is on for a bad TPS sensor, could that be killing MPG's? The choke works fine so I know its not sticking. With fuel economy this poor I may have to sell it! 
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iTrader: (2)
Joined: Jan 2010
Posts: 446
Likes: 0
From: Carrollton Texas.
Car: 1985 Camaro Z28
Engine: 305 mild build up
Transmission: 700r4
Axle/Gears: Stock
Re: Poor Fuel Economy?
After much work I've assembled all the pieces and got my 86 trans am running decently. I'm only getting around 12-14 MPG's though. What should I expect to get for fuel mileage? Its a cc-qjet/305. The CEL is on for a bad TPS sensor, could that be killing MPG's? The choke works fine so I know its not sticking. With fuel economy this poor I may have to sell it!
Member
Joined: Jan 2007
Posts: 446
Likes: 1
Car: 87 Camaro
Engine: 305 LG4 (H)
Transmission: 700r4
Axle/Gears: 2.73
Re: Poor Fuel Economy?
What have you done to it/removed from it? Its also a lot on how you drive. Is the trans shifting into fourth and/or locking up? How about EGR function that helps fuel economy as well. Oh, replace the TPS. That way you know if any more codes pop up.
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