1996 BMW 840 runs on after switch off

Tiny
CJMADDEN
  • 1996 BMW 840

Engine Performance problem
1996 BMW 840 V8 Two Wheel Drive Automatic 65000 miles

I have a slight problem with the engine running on very briefly after switch off, maybe for 1 or 2 seconds. I have just replaced the ECU with a used guaranteed unit but the problem is still there. The car drives superbly, is rapid on acceleration and does not miss a beat. The temperature guage is at 12 o'clock once the engine warms up. The car has full main dealer sevice history. The diagnostic shows no fault codes! Any idea what the problem might be?

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Monday, June 1st, 2009 AT 11:01 AM

1 Reply

Tiny
DR. HAGERTY
  • EXPERT
  • 9,737 POSTS

It is possible that the main relay is taking it's time to drop out and it might need replacement.

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Monday, June 1st, 2009 AT 12:26 PM

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