Just another thought for what it's worth... My 89 Bronco with an EFI 302 V-8 started having stalling issues at around 55,000 miles and after long uphill climbs on the highway during the summer... It too acted like vapor lock and would restart only after sitting and cooling down for 15 minutes or so, then run fine... Problem turned out to be a failing gas tank located fuel pump... Once I replaced it, no more problem... Is it possible your fuel pump is failing...?
Vapor Lock
2
I have searched with no luck. Only after towing have I experienced this. After a long tow when coming to a complete stop the engine starts to lose power, as if it was being restricted until it kicks in again. When this happens the familiar cackle of the engine goes away and it feels like it wants to stahl but doesn't /ubbthreads/images/graemlins/shrug.gif. This is on Drive but if I put it on Park everything seems normal. I tow 8K lbs and on this last trip went for 400 miles roundtrip. I had just replaced the air filter thinking it was a breathing problem but it still did it after the long tow. While talking to a friend that distributes diesel engine parts, he told me it was Vapor Lock. Did not even stop to think of an answer. He says it has to do with the heat and how diesel vapors at certain temperatures causing this to happen. I have never heard of this. Can anyone shed some light on this? /ubbthreads/images/graemlins/confused.gif
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