Engine shuts off at operating temperature

Tiny
CENTURYBUICK
  • 1991 BUICK CENTURY
  • 198,000 MILES

3.3 litre engine shuts off when warm. New ecm, ignition control module and knock sensor. No spark after shutdown. Fuel pressure good at shutdown. Injectors ohm out at 12.8 hot or cold. Occurs after cooling fan cycle(s) on-off.14.2 volts at battery. Computer ground good. Code 44 set first time today. Will not always go into closed loop. Today showed a lean condition, rapidly flashing engine light w/aldl jumped. Prior would show closed loop. Engine runs, gets hot, shuts down, restarts after 5 minutes, sometimes takes longer.

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Monday, May 27th, 2013 AT 1:03 PM

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Tiny
DOCFIXIT
  • EXPERT
  • 18,988 POSTS

Suspect faulty Dual Crank Sensor

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Monday, May 27th, 2013 AT 1:49 PM

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