1987 Oldsmobile Cutlass Voltage drops when air conditioning

Tiny
RICHARDFRANK
  • MEMBER
  • 1987 OLDSMOBILE CUTLASS
Electrical problem
1987 Oldsmobile Cutlass 6 cyl Two Wheel Drive Automatic

The voltage drops when air conditioning is running. The altenator has been checked and seems to be ok. But when a lode is placed on the vehicle the voltage drops going to the battery. The car will not start after the battery has been drained.
Sunday, July 25th, 2010 AT 3:18 PM

2 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Charge teh battery and then take it to see if it's any good or not. It may be to weak. Also check to see if there is a draw ont ehbattery when the car is shut off.
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Friday, July 30th, 2010 AT 9:03 AM
Tiny
DYLANROBERTS
  • MEMBER
  • 5 POSTS
It is most likely your voltage regulator and on that year it is part of the alternator the only way to fix it is to buy a new alternator a great way to make sure its your volt regulator turn on your car turn on your head light switch them to high beams then have a friend press on the gas as you watch the headlights if the regulator is bad the lights will dim and brighten

Dylan
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Friday, September 10th, 2010 AT 5:34 PM

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