1988 f150
1988 f150
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1988 ford truck
my engine is a 302 and has 49000 miles on rebuilt engine. have not changed fuel filter. mechanic looked at it and said it was ok. the codes pulled showed a bad egr valve-changed it but did not help
buzz
buzz
Tuned
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From: austin
Have you possibly gotten bad gas recently? I had an '86 F150 with the 302 that had bad (dirtied w/ particles) gas in the rear tank. It would bronc and buck when I hit the gas pedal. When I ran it, they clogged the dual function reservoir (holds gas so that you can switch tanks back and forth while driving). Unfortunately this was a $200 "dealer-only" part. Long story short, I bypassed the reservoir with about 12" of fuel tubing and the truck ran great. (The only problem for me with this was that I had to prime the fuel system with the electric pump if I had parked on a hill).
-Chris
-Chris
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codes
Originally Posted by 88F-150pimp
Have you pulled any codes?
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1988 ford truck
Originally Posted by torquemeister
Have you possibly gotten bad gas recently? I had an '86 F150 with the 302 that had bad (dirtied w/ particles) gas in the rear tank. It would bronc and buck when I hit the gas pedal. When I ran it, they clogged the dual function reservoir (holds gas so that you can switch tanks back and forth while driving). Unfortunately this was a $200 "dealer-only" part. Long story short, I bypassed the reservoir with about 12" of fuel tubing and the truck ran great. (The only problem for me with this was that I had to prime the fuel system with the electric pump if I had parked on a hill).
-Chris
-Chris
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could also be the throttle position sensor. When the throttle is opened, it lets in more air and as a result, it needs more gas to run. If the sensor isn't sensing that the throttle is opening, all you are doing when hitting the gas is letting more air in with not enough fuel, which will prevent it from making power and stall the engine.
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1988 ford
Originally Posted by jb1390
could also be the throttle position sensor. When the throttle is opened, it lets in more air and as a result, it needs more gas to run. If the sensor isn't sensing that the throttle is opening, all you are doing when hitting the gas is letting more air in with not enough fuel, which will prevent it from making power and stall the engine.
Tuned
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From: austin
Haynes has an easy procedure to check the TPS (throttle position sensor). My '86 also had a bad TPS thta I found while it was having the same problem I discussed earlier in this thread. At WOT, it should read close to 5V, mine was reading 3V. I replaced it, still had the running-out-of-gas problem. But it's an easy check and cheaper/easier than messing with the fuel system!
-Chris
-Chris
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paulwjax
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
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Nov 11, 2013 09:27 PM
