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LO3 Dies when A/C or heater is turned on.

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Old May 6, 2010 | 06:59 PM
  #1  
Shadyredeyes's Avatar
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From: Texas
Car: 1987 Camaro Iroc Z28
Engine: 350 S/B
Transmission: 700 R4
Axle/Gears: 2.43 Gear Ratio
LO3 Dies when A/C or heater is turned on.

Anyone have any clues why my 305 dies every morning when I turn the heater or a/c on? It also does it if it's not been drivin in a couple hours. Mainly seems to happen if the engine is cold. When I first start the car the idle surges and tries to die, sometimes it does, sometimes it just idles back up and runs ok.
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Old May 7, 2010 | 06:14 PM
  #2  
thomas1976's Avatar
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Joined: Jun 2006
Posts: 2,199
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From: West-Central
Car: 91 Trans am
Engine: built 360 TBI
Transmission: built 700r4
Axle/Gears: 10bolt/3.23
Re: LO3 Dies when A/C or heater is turned on.

Bad battery? Bad fuel pump?
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Old May 7, 2010 | 07:10 PM
  #3  
Shadyredeyes's Avatar
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Joined: Mar 2009
Posts: 260
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From: Texas
Car: 1987 Camaro Iroc Z28
Engine: 350 S/B
Transmission: 700 R4
Axle/Gears: 2.43 Gear Ratio
Re: LO3 Dies when A/C or heater is turned on.

I haven't checked fuel pressure yet, nor have I checked the battery. I'll see what I can figure out.
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