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91 Camero RS Overheating

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Old Jun 20, 2012 | 12:13 PM
  #1  
Michelle Turner's Avatar
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91 Camero RS Overheating

My RS is over heating big time. The temp gauge is broken and dosn't register anything at all but will 'reset' itself upon starting. It only over heats while idling or at lower speeds. I've been leaving my heater on to keep it from over heating too much while I'm driving.

The temp sensor has been replaced and I took it to a dealer who said it was the EMC. Everything I find on EMC's doesn't help me much. Can someone tell me what the possibilities could be for the car over heating and where I can get a new EMC for the cooling fan?
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Old Jun 21, 2012 | 06:38 AM
  #2  
JamesC's Avatar
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From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Re: 91 Camero RS Overheating

Originally Posted by Michelle Turner
My RS is over heating big time. The temp gauge is broken and dosn't register anything at all but will 'reset' itself upon starting. It only over heats while idling or at lower speeds. I've been leaving my heater on to keep it from over heating too much while I'm driving.

The temp sensor has been replaced and I took it to a dealer who said it was the EMC. Everything I find on EMC's doesn't help me much. Can someone tell me what the possibilities could be for the car over heating and where I can get a new EMC for the cooling fan?
Welcome to TGO, Michelle.

Camaro. ECM. You might consider a search as there aren't many questions that haven't been asked and answered here on TGO. To start with the simple: Is the fan (fan's) coming on? Is the lower air dam in place?

Best of luck with your project.

JamesC
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Old Jun 21, 2012 | 10:16 PM
  #3  
Dakota W.'s Avatar
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Joined: Aug 2011
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From: Aloha, Oregon
Car: 1991 Christine Z28
Engine: RV Cam and Intake 350 SBC
Transmission: 5speed
Axle/Gears: 3.08 ls Posi
Re: 91 Camero RS Overheating

Possibilities: too much crap (oil,dirt,etc.) on the side of the block, thermostat, clogged hose(s)/raditator, water pump, fans, no air dam, bad head gasket. There are actually 2 temp sensors, one is in the plenum and the other is on the underside of the block right above the starter. I believe the temp sensor is in the plenum and the fan switch is above the starter. Getting hot at low speeds and idle isn't giving much of an idea as to what the problem is, have you noticed anything else?
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