my 1990 fleetwood shuts off when i turn the heat or air on

1990 CADILLAC FLEETWOOD
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DARRIEN
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  • 1 POST
the idle changes and its like the motor works ten times harder
Oct 28, 2011 at 1:59 AM
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RIVERMIKERAT
  • ✓ASE Certified Mechanic
  • 6,110 POSTS
  • ASE Certified Mechanic
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?
Oct 28, 2011 at 3:39 AM
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