My 1990 Fleetwood shuts off when I turn the heat or air on

Tiny
DARRIEN
  • MEMBER
  • 1990 CADILLAC FLEETWOOD
The idle changes and its like the motor works ten times harder
Friday, October 28th, 2011 AT 1:59 AM

1 Reply

Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
The engine does have to work harder if the AC is turned on.
With the engine running, make sure the coil is still receiving a minimum of 12.8Volts. Also check the heating and cooling system grounds. How long has it been since the engine had a tune-up? Or the air filter and fuel filter were replaced?
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Friday, October 28th, 2011 AT 3:39 AM

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