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1997 965 hesitations 900 1997

uid 44536's pic
posted by  darkdelta on  Thu Aug 4 12:47 CST 2011
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last visit: Fri Oct 24 12:52 CST 2014
[RELATED]

997 965 with 166,000 on the clock.

I was driving with cruise on at 65 mph for about 20 miles, I felt the car hesitate slightly. Looked at the tachometer and saw the RPMs were dropping in sync with the hesitations. Immediately went out of cruise control and headed home on manual. After turning around and going about 60 MPH or so, the RPMs really dropped, maybe 800-1000 and recovered immediately. The engine then recovered and drove home about 20 miles flawlessly. The duration of the event was < 3 minutes.

The car did not throw any codes has preformed with no problems since. The timing belt was changed about 8K miles ago along with the water pump and tensioner. Fuel filter changed last year. Ignition switch three years ago. As far as I can tell all sensors and relays are from the factory.

The PO dealer records showed they brought the car in at 60 K with the same symptoms. They found no problem, no codes and an 11 mile test drive.

Not a clear path to me, but since no codes maybe fuel pump relay, fuel pump, all original?
Any thoughts/experiences appreciated.

Thanks,

Fred






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