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'94 940 Turbo Lurching/No Power 900 1994

posted by  rjk on  Wed Dec 10 15:12 CST 2003
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last visit: Sat Dec 12 12:30 CST 2009
[RELATED]

Does the problem exist in all modes of power production (with boost and without)? Or one mode or the other? It sounds similar to a problem I had a few years ago when my 945T had about 135k on it. Turned out to be a hole in the intake hose between the intercooler and the throttle body (right by the connection w/the intercooler, on the bottom). It was invisible to a cursory visual inspection and hard to feel because of its proximity to the neck of the intercooler. It seemed to open up intermittently which is why it didn't always exhibit the power loss. I didn't find it until I actually removed the hose to clean the inside and found the mushy area deteriorated by oil. Wouldn't hurt to check it out before dropping $$$ on diagnosing it. It screwed up the AMM readings because it was allowing air to escape during boost and allowing extra air to be sucked in during non-boost.

Don't get me wrong, I'm not disagreeing w/your mechanic, just throwing out an option not yet covered. Let us know what you find...
--
Bob Kraushaar '94 945T, '91 940T(back from retirement), '88 240, '84 242Ti, '94 F-150, '88 300TE, '89 560 SL, '68 Shelby GT-500 KR






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