86 F150 300 inline problems
#1
86 F150 300 inline problems
alright here goes. ran rough when i got it and backfired real bad. I put new plugs, wires, cap, and rotor on. It ran a little better. Took off the smog pump, egr, cat, and the backfire went away and starting running a bit better. Then we put a new distributor, new module on the dist, new throttle position sensor and o2 sensor. Still hesitates. It runs rough up to about 1800 rpm and then cleans up a little. Then you get to 2800 or so and it cleans up and runs perfect. We have checked all of the vacuum stuff and are just at a loss. any ideas guys? Appreciate the help guys
Josh
Oh and a new map sensor didnt help
Josh
Oh and a new map sensor didnt help
#2
Resident A-hole
I didn't see a fuel filter in that list. Might try that. Possibly the O2 sensor if its totally wacked will cause a running condition. With the older Fords there is no data stream to look at. And I don't know the volt specs off the top of my head for it.
#3
yeah i put a new fuel filter on and a new 02 sensor. Thinking about putting an older carb and mechanical distributor on it just to make it run, and do away with the electronics all together.
#6
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Join Date: Jun 2007
Location: Middle Georgia
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alright here goes. ran rough when i got it and backfired real bad. I put new plugs, wires, cap, and rotor on. It ran a little better. Took off the smog pump, egr, cat, and the backfire went away and starting running a bit better. Then we put a new distributor, new module on the dist, new throttle position sensor and o2 sensor. Still hesitates. It runs rough up to about 1800 rpm and then cleans up a little. Then you get to 2800 or so and it cleans up and runs perfect. We have checked all of the vacuum stuff and are just at a loss. any ideas guys? Appreciate the help guys
Josh
Oh and a new map sensor didnt help
Josh
Oh and a new map sensor didnt help