V6 (1994-2004) Mustangs Technical discussions on the 3.8L and 3.9L V6 torque monsters

Overheating?

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Old Jun 7, 2011 | 07:17 PM
  #1  
Mike-94V6's Avatar
Mike-94V6
Thread Starter
 
Joined: May 2011
Posts: 9
From: Florida
Default Overheating?

My car has recently been having some overheating problems. On the stock gauge it would reach the "M" on NORMAL and stays there when I'm not using the A/C (I'm not sure if that's the normal operating temperature or not), but once I turn the A/C on the needle spikes to the "A" and even reaches the "L" this is after about 15 min of driving in 90-95 degree weather.

I was also idling it earlier and noticed that when the A/C is off the fan blows cool air but once it's turned on in a matter of seconds it starts blowing very warm air.

What could be the problem?! I can't stand driving without A/C, especially in Florida... I've already gotten the thermostat replaced and the system flushed
but that didn't do much

HELP ME OUT GUYS!
Old Jun 8, 2011 | 02:59 AM
  #2  
NeoTokyo's Avatar
NeoTokyo
6th Gear Member
 
Joined: Dec 2003
Posts: 6,524
From: Sacramento, CA
Default

Welcome to MF.

Bad compressor putting a hard load on the engine perhaps?
Low refrigerant?

Does your belt slip at all when you turn it on?


Best thing to do is bring it to a shop and let them know whats going on. They will be able to tell you if you need a recharge or if you need a new compressor or maybe you have a bad condenser.
Old Jun 9, 2011 | 04:37 PM
  #3  
AmberTrevino7's Avatar
AmberTrevino7
 
Joined: Jun 2011
Posts: 9
From: TX
Default

I had a similar problem with my 96 mustang, there are a few sensors around the thermostat, I believe on mine I changed 3 of them. My fan was not kicking on when it needed to after I changed the sensors the fan was fine no more over heating.. Good luck!
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