08 JK engine miss ,baffling.
08 JK, original owner 125K miles or close to it, Started out as a slight "bump" when idling, then went to a miss after warming up then backfired driving on freeway. After all of this it would not thro...
Forum Discussion
j-d wrote:klutchdust wrote:
I owned a 1985 "birthday bird" Thunderbird that ran when it felt like it and stopped when it felt like it regardless of where you happened to be. Many years later Ford fessed up and said a module in the ignition system would shut off the fuel pump once it got hot, not always but sometimes.
We had an '84 and an '86 TBird. Both V6 engines with EFI. The '86 was a deluxe one with six way power seats both sides, electronic dashboard and AOD electronic overdrive. I really liked those cars. '84 was plainer with 3-speed auto and one 4-way power seat. It seemed to have more "heart" though. I think the distributor module was "TFI" Thick Film Integrated (Circuit) and some of those modules were troublesome.
Very troublesome.
So we just took the jeep to the store ,about 5 miles each way,and it didn't miss at idle, miss during heavy acceleration (or as the wife said, man ,you really punched it) and just ran like normal. Tomorrow I am going 60 mile roundtrip on the freeway. That seems to be the time it may stumble and even backfire. Once driving it hard and decelerating for an off ramp it burped through the intake. Heat related...hhmm.....
