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What would cause power loss as the engine heats up?

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Old Dec 14, 2007 | 10:05 AM
  #1  
AT4 T/A's Avatar
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From: Las Vegas
Car: 1989 IROC-Z
Engine: L98 350
Transmission: New 700r4 Done by 11/14/07!
What would cause power loss as the engine heats up?

'89 350 IROC-Z stock. When first starting the engine, it charges fine at just over 13 volts. As the engine heats up, the voltage will begin to drop dimming the lights, slowing the turn signals, etc.

Any ideas what I can do?
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Old Dec 14, 2007 | 01:36 PM
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formula_novice's Avatar
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From: St. Louis, Missouri
Car: 1989 Firebird Formula
Engine: 383 Stealth Ram
Transmission: 700R4
Axle/Gears: 3.73 9 bolt Posi
Re: What would cause power loss as the engine heats up?

As the engine heats up, the idle slows. I would check the alternator to see if it's charging properly.
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