92 f150 5.0 - 8mpg - egr/cat converter/other?
#17
11-06-2022, 08:52 PM
[QUOTE=aharleycpl;15751584]Gone to the dark side here and replaced my old chevy with a 1992 ford f150 ext cab short box 4x4 302, e40d approx 130k miles 33x12.5x15 tires and a bit of a lift.
Got it for the right price and been fixing a lot of the little stuff that the previous owner took apart and never put back together or never knew how to fix in the first place and have it to where it can be used and driven now.
Would like opinions about which component(s) to attack next to see if we can get the mileage up over that 8mpg mark driving highway on fairly straight and level 60mph. I have my suspicions but some of the real ford enthusiasts might be able to provide some direction. Going to eventually go through it all but getting the fuel mileage up higher would help most in the short term.
So the problems I can identify that might affect the mileage can best be described as follows.
EGR valve is bad - error code 332 in the computer - verified it was not working by hooking up vacuum at an idle with no change in rpm - purchased part and will replace next weekend. On a GM it would likely throw the computer into a limp home mode and be not efficient and could explain the problems. Not sure if Ford reacts that way or not.
33 inch tires - is it possible that the 302 with this transmission just doesn't quite have the punch to run that large of a tire or shift points are not going to be quite right to power through it? Calibrated the speedo so it is showing the correct speed with the larger tires.. kudos to ford for that easy fix.. not sure how much the taller tires would affect power or MPG
Possible partial clogging of the cat converter? Temp gauge runs about the right hand side of the M in normal. Thinking it could have a restriction due to a perceived lack of power. I can scoot down the road at 70 but seems like I have my foot into it more than I should need. Cruise will not hold speed on slight inclines unless I turn the overdrive off but with overdrive off it will. With the age/mileage on the rig a clogged converter comes to mind as it looks like it is probably the original.
Fuel pressure could cause the lack of power but thinking it would not as likely cause the poor mileage.
It starts and runs great.. smooth with even acceleration. And no.. have not done a complete tune up on it yet.. still fixing all the known bad/broken/wore out components before fine tuning. Kind of last minute emergency vehicle change since someone ripped off my other truck and with winter on my heels and working in a driveway am looking for the most likely biggest bang for the buck checks and repairs to hopefully get it through till spring when I can dig into it deeper.
Thoughts and suggestions? What kind of gas do you use??? Try the no-ethanol gas (THE REAL GAS)RUN YOU A FUEL AN SEE IF THAT HELPS,no ethanol in my observation does better
Got it for the right price and been fixing a lot of the little stuff that the previous owner took apart and never put back together or never knew how to fix in the first place and have it to where it can be used and driven now.
Would like opinions about which component(s) to attack next to see if we can get the mileage up over that 8mpg mark driving highway on fairly straight and level 60mph. I have my suspicions but some of the real ford enthusiasts might be able to provide some direction. Going to eventually go through it all but getting the fuel mileage up higher would help most in the short term.
So the problems I can identify that might affect the mileage can best be described as follows.
EGR valve is bad - error code 332 in the computer - verified it was not working by hooking up vacuum at an idle with no change in rpm - purchased part and will replace next weekend. On a GM it would likely throw the computer into a limp home mode and be not efficient and could explain the problems. Not sure if Ford reacts that way or not.
33 inch tires - is it possible that the 302 with this transmission just doesn't quite have the punch to run that large of a tire or shift points are not going to be quite right to power through it? Calibrated the speedo so it is showing the correct speed with the larger tires.. kudos to ford for that easy fix.. not sure how much the taller tires would affect power or MPG
Possible partial clogging of the cat converter? Temp gauge runs about the right hand side of the M in normal. Thinking it could have a restriction due to a perceived lack of power. I can scoot down the road at 70 but seems like I have my foot into it more than I should need. Cruise will not hold speed on slight inclines unless I turn the overdrive off but with overdrive off it will. With the age/mileage on the rig a clogged converter comes to mind as it looks like it is probably the original.
Fuel pressure could cause the lack of power but thinking it would not as likely cause the poor mileage.
It starts and runs great.. smooth with even acceleration. And no.. have not done a complete tune up on it yet.. still fixing all the known bad/broken/wore out components before fine tuning. Kind of last minute emergency vehicle change since someone ripped off my other truck and with winter on my heels and working in a driveway am looking for the most likely biggest bang for the buck checks and repairs to hopefully get it through till spring when I can dig into it deeper.
Thoughts and suggestions? What kind of gas do you use??? Try the no-ethanol gas (THE REAL GAS)RUN YOU A FUEL AN SEE IF THAT HELPS,no ethanol in my observation does better
#18
11-07-2022, 10:22 AM
Cargo Master
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