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Old 12-05-2000, 12:35 PM
revbond revbond is offline
Registered User
Join Date: May 1999
Location: Berkeley, CA
Posts: 199
I once experienced exactly the same condition on my 16V. The engine started running very rough. I lost power. I thought the engine was gone. I lifted to hood only to see a my pre-cats glowing red hot. The problem? One cylinder was not firing due to a fouled spark plug. I suppose this approximates the lean condition with extra fuel being burned near/in the pre-cats. Replacement sparkplug cured all symptoms.

'87 2.3-16v
'92 500E
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