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overheating with a/c on

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Old Aug 20, 2009 | 12:03 PM
  #1  
jamon8's Avatar
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From: Southern IL
Car: 88 GTA "Cocaine"
Engine: 350 tpi
Transmission: 700r4
Axle/Gears: 3.27
overheating with a/c on

I have replaced everything in the air conditioning

when I am driving without stopping the temp seems to stay normal

as soon as I get into town in the stop and go traffic the motor starts to overheat

my dual fan setup works just fine and I have a brand new radiator

I was thinking of putting a fan on the outside of the condenser and having it push air through

the air deflection shield is fine

is it because the motor is 60 over with 10:1 compression

any help would be great
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Old Aug 20, 2009 | 08:56 PM
  #2  
pwdbychevy's Avatar
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Joined: Aug 2001
Posts: 1,337
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From: Wesley Chapel, Florida
Car: 1991 Camaro Z28
Engine: Dart SHP 406ci T88 turbo
Transmission: T56
Axle/Gears: QP 35 spline Ford 9" 3.50 gears
Re: overheating with a/c on

I was having the same problem. The issue is that the a/c condenser mounts in front of the radiator and when the a/c is on that condenser gets hot and fans are pulling all that hot air through the radiator raising the coolant temp. You said you have a new radiator. Is it a stock radiator or aftermarket? The factory radiator should be good enough for stock to mildly modified engines but if you're making more hp(400+) then you're gonna need a bigger radiator preferabbly aluminum two or three core. I bought a 3 core aluminum on ebay and now I don't overheat in traffic with the a/c on.
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Old Aug 21, 2009 | 10:56 AM
  #3  
jamon8's Avatar
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From: Southern IL
Car: 88 GTA "Cocaine"
Engine: 350 tpi
Transmission: 700r4
Axle/Gears: 3.27
Re: overheating with a/c on

its a stock radiator

so you think the fan on the condesor will not work
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Old Aug 21, 2009 | 05:27 PM
  #4  
pwdbychevy's Avatar
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Joined: Aug 2001
Posts: 1,337
Likes: 26
From: Wesley Chapel, Florida
Car: 1991 Camaro Z28
Engine: Dart SHP 406ci T88 turbo
Transmission: T56
Axle/Gears: QP 35 spline Ford 9" 3.50 gears
Re: overheating with a/c on

Originally Posted by jamon8
its a stock radiator

so you think the fan on the condesor will not work
It should help since you're not overheating while driving. You might have an issue trying to find a place to put it because of the x support braces.
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