1991 Chevy Silverado Stalls while blower motor is on any sp

1991 CHEVROLET SILVERADO
158,000 MILES • V8 • 4WD • AUTOMATIC
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TYLERSCOTT
  • MEMBER
  • 2 POSTS
Hey there, Just wondering if you could help me out with this issue. Our shop truck has has an alternator battery and all the minor tune up stuff done. Now we are experiencing a problem with the vehicle running while the blower motor is on. Any ideas ?
Jun 10, 2010 at 5:16 AM
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INTERNETMECHANIC
  • ✓Experienced Mechanic
  • 700 POSTS
The compressor puts a load on the engine if your talking about ac?
Jun 10, 2010 at 10:35 AM
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TYLERSCOTT
  • MEMBER
  • 2 POSTS
we checked if it was still happening with any other electronics on and we experience the issue with the radio/headlights ect on. we can be driving fine with no accessories but as soon as you put an extra load it stalls out
Jun 14, 2010 at 4:17 AM
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INTERNETMECHANIC
  • ✓Experienced Mechanic
  • 700 POSTS
Make sure the battery has a full charge and the connections are good. Check the charging system.
Jun 14, 2010 at 4:38 AM
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TYLERSCOTT
  • MEMBER
  • 2 POSTS
New Battery, New Alternator
Jun 14, 2010 at 4:40 AM
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INTERNETMECHANIC
  • ✓Experienced Mechanic
  • 700 POSTS
Even if the battery and alternator are new, if there is a problem with the wiring circuit, those parts won't help. I was talking about using a digital multimeter and getting the actual voltage readings.

Can you tell if your loosing spark-- fuel, something to point in the right direction? Turn on the key, no crank, turn on the headlites, check for primary voltage at the coil. All I can do is hunt and peck without more info.
Jun 14, 2010 at 5:57 AM
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