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3,112 Posts
Yeah somethings wrong, I think a tuneup would be in order. I recently achieved 15 mpg with mostly city driving, with 166,000 miles, TBI 350, 3.42 gears, and 285/75/16. Its all in the foot, the slower the acceleration, the better your mileage gets. Although I havn't totally proven this yet, I made quite a few WOT 0-75 runs on that 15 mpg tank :crazy:
BTW, is your SES light on?
how old are your o2 sensors?
Definitly pull your plugs and have a good look at them. Eventually they will get all nastied up. I run mine (cheap copper delcos) about 2 years a set, along with wires/cap/rotor. About halfway through I'll pull them all and clean them off real good, seems to help, esp on an old motor.
I also try to run some injector cleaner every once in a while, (usually when I think of it), I'm not entirely sure how much good it does, but for like 3 bucks a pop, can't really go wrong.
BTW, is your SES light on?
how old are your o2 sensors?
Definitly pull your plugs and have a good look at them. Eventually they will get all nastied up. I run mine (cheap copper delcos) about 2 years a set, along with wires/cap/rotor. About halfway through I'll pull them all and clean them off real good, seems to help, esp on an old motor.
I also try to run some injector cleaner every once in a while, (usually when I think of it), I'm not entirely sure how much good it does, but for like 3 bucks a pop, can't really go wrong.
I bought my last O2 off ebay for 30 bucks. Dunno what they are at the store. I'd definitly get your codes read by someone that knows whats up, all kinds of things could be out. If you have no cats, and no o2 simms, your rear o2 sensors are probably going nuts, which won't help.
