94 5.2l 5spd bad mpg's!!!!!
Like previously stated, there are many things you can do to help get better mileage.
Replace the o2 sensor, reduce weight of truck, keep tires inflated, clean/replace the Idle Air Control, TPS, fuel treatment, new injectors, take off the throttle body and give it a good cleaning, don't drive with a heavy foot, and many more. These are things that the average person can do, too, instead of taking it to a shop.
I had done a majority of those things to my old '96 v6 and got up to 21+ mpg on highway.
Replace the o2 sensor, reduce weight of truck, keep tires inflated, clean/replace the Idle Air Control, TPS, fuel treatment, new injectors, take off the throttle body and give it a good cleaning, don't drive with a heavy foot, and many more. These are things that the average person can do, too, instead of taking it to a shop.
I had done a majority of those things to my old '96 v6 and got up to 21+ mpg on highway.
1,500 was an exaggeration, but ya 2,000 might be a good starting point. And yes at that low RPM you will be driving like an old fart. But that is the #1 thing to get better MPG, that and ride a bicycle or WALK. LOL Like why do we want to to do that.
If it makes anyone feel any better, I was watching American trucker last night and they dug a 60's GMC cab over out of the trees. I was shocked to see it had a 318 V8 for a power plant. Obviously not the same motor, but impressive none the less that they were putting the same displacement motors in SEMIS back in the day.
You have a problem somewhere. You shouldn't have that much resistance when you let off the gas. You didn't say if it was auto, or manual though. If it's auto, pop it into neutral when you let off the gas and see if you have the same resistance.
Last edited by g. man; Nov 17, 2011 at 11:13 AM.
Yeah, sorry! Its an auto. I did try the nuetral idea, and made very small diff. I put on all new brakes, rotors, pads, drums, callipers, brake lines...so I know its not a brake issue. In the spring I'm gonna do the front hubs, ball joints, a-frame bushings, and alignment. Tires are always aired up to par.
so filled up last night and thank god our fuel is finally coming down (3.45) and calc'd it out at 15.7 that's driving mostly highway with a small amount of in town (the town i live in can be driven thru in about 3 minutes)
That's great mileage! I get about 13mpg's. 147,250 miles, 4x4, 5.2L v8, larger tires (33's I believe). After reading this, I'm thinking about seafoaming, LOL!
Gas here has been about 3.29-3.39 for the past month or 2.
Gas here has been about 3.29-3.39 for the past month or 2.
Last edited by ColinSLC56; Nov 18, 2011 at 06:46 PM.


