Truck misses and backfires when accelerating and climbing hills after running for several hours. Short trips, the truck runs fine.
Could be vapor lock in the fuel system. Next time it does this, stop and try removing the fuel filler cap... Hope this helps...;-)
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No check engine light on. Replaced plugs but not wires.
I call it a miss as it will sputter,backfire and deaccelerate while attempting to climb hills. Again, this was near the end of a 3 1/2 hour trip. No problems while driving locally or short trips.
~130,000 miles
MAF sensor has already been replaced.
Coils have been checked and told they were ok.
How many miles are on it?
try cleaning the MAF sensor.
if your engine had a miss u would have a check engine light, (no exceptions) suggest u have this put on a diagnostic tester at the dealer.
sounds like a coil problem, do u have a check engine light?
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