new guy to the fourms with a problem
#1
new guy to the fourms with a problem
i have a 1990 pu with a 5.0 and the problem is that my truck has a bad surge.when i have to stop for a short period it will idle good then it acts like runs out of gas for a split sec then the engine will pick up and the surging starts. if i put in netural before it starts it doesnt surge.i have changed the tps and checked all the vacuum lines, has anyone else had this problem or has an idea what might be wrong? also what is the average fuel mileage for these trucks, 5.0 with aod trans?
thanks, scott
thanks, scott
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here are the codes that came up when i scanned the computer 32 41 67.
the reason i changed the tps, is in the haynes manual it said that the tps may cause an irregular idle. i had bought one for my bronco so i tried it to see if that was the problem.how do check for fuel flow? the fuel pressure was in spec with the haynes manual.
thanks, scott
the reason i changed the tps, is in the haynes manual it said that the tps may cause an irregular idle. i had bought one for my bronco so i tried it to see if that was the problem.how do check for fuel flow? the fuel pressure was in spec with the haynes manual.
thanks, scott
#5
I'll bet that the gasket between the upper and lower intake is leaking. Get some carb cleaner and spray behind the distributor on both sides about two inches back from the distributor. If the idle picks up, you found it. Go to a local Ford dealer and get a plenum gasket for a 92 F150. These are improved so as not to break.
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