2002 Mercury Sable RPM

Tiny
PETER11
  • MEMBER
  • 2002 MERCURY SABLE
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 70,000 MILES
Last summer I have parked my car to my garage after a long trip. The weather was hot, 90 F. In ten minutes I started the engine, intending to make another trip, but the engine just died: RPM was not supported at "Parking" position of the stick. Tried another time, and another time. Battery is strong, starting was not a problem, but RPM at idling came to "0" soon.
Next morning I started the engine and ran it at high RPM for 5 minutes. Then gradually reduced to normal. It worked OK. Brought it to a good repair shop for inspection, they could not find anything wrong.
Last week I got the same problem after six months of normal operation. RPM was not supported at "Parking" position of the stick. Two lights came up: "Charging system" and "Service engine soon". My car was towed to a very experienced repair shop. In two days they started to inspect the car. Could not find anything wrong.
Any idea of what is going on?
Saturday, December 29th, 2007 AT 7:07 AM

1 Reply

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Have the tach wire at the coil pack inspected for grounding against metal.
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Saturday, December 29th, 2007 AT 8:52 AM

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