Quote:
Originally Posted by WCan_Kid
I've put this out to a number of people and it remains a pure mystery.
1998 Porsche Boxster, runs like a dream most of the time, but when outside temps get into the 30's it will randomly stall.
No warning, no codes thrown, just all of a sudden the engine stalls. Never happens on cooler days and it doesn't matter if it's idling in a parking, driving city speeds (50-60km/h) or highway speeds (100km/h +).
I do get a whiff of gas, like it's flooded, just after it happens and if I'm stopped it acts like an old carburated engine would when flooded. On the highway I can just push the clutch in and then release to jump start it again, will run fine after that for a random amount of time (1/2km to 1 or 2 km's before stalling out again).
Have had it checked out and the tank lines re-routed at an independant Porsche shop to no avail, along with other shops/mechanics including my usual guy who typically figures out anything I throw at him.
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This sounds like vapor lock. The high temperatures being the trigger. Sounds like the fuel lines have been re-routed, they likely suspected the same. Is there somewhere the fuel lines are getting close to hot stuff (exhaust, cat, manifold, etc)?