2000 Chevy Corvette: Vehicle runs hot when A/C is ON?

Engine gets overheated hot in traffic when A/c is turned on.

But in Normal open road it works fine.

In this types of cases the thermostat and cooling fan needs to be monitored.

There are two engine cooling fans on Chevy corvette 2000 year model vehicle.


So first you do need to verify that both fans are properly  working. For that you may need to use a flashlight to see it spinning. If it isnt, then the basics of checking for power to the motor, and if no power, then checking the cooling fan relays and fuse(both labeled) in the engine compartment fuse box.

If no power at the fuses, then engine coolant temperature sensor and ac pressure switches will need to be tested and finally, if needed, the pcm tested.

If the fan is working, then first check for any missing, cracked or broken fan shroud that is allowing for inefficient fan cooling.

If ok, then both ect sensor and ac pressure switch and pcm will need to be monitored with a scan tool to see if the fans are coming on at proper temperature and ac pressure and then fan monitored to see that it is spinning at proper speeds.

I know that sounds like a lot, but with symptoms described, this is in the fan operation in some capacity and will require going thru the above steps to find the underlying cause and then repair.

This details will help.
Thanks.

For All types of Car models and brands help 
Go to Newly Launched

FREE Car repair guide? 
http://technoanswers.blogspot.in/2012/03/car-repair-guide.html 

& 
Complete Car repair Help FREE? 

http://repairhelpcenter.blogspot.in/2012/03/complete-car-repair-help.html

AC stops working when it gets warm outside?

Ac stops running on hot conditions this indicates few possibilities. Check the refrigerant level in the compressor of car ac.If its low then car will compressor will overheat and stops running. Also check the coolant level.If its low then it needs to be full.Also check if there any leak of the coolant.Get the ac pressure test done.It can be done at any local car garage.This will confirm whether there is refrigerant or coolant leak in the system causing the ac to stop after sometime.If coolant and refrigerant all checked OK.Then the thermostat needs to be checked.When the car temperature reaches certain temp the cooling fan turn on and cools the thermostat.But if the cooling fan stopping after ac turns off then thermostat needs to be checked.Also connect the fan connections to car battery and check if the fan is running directly.Check the voltage at fan terminals.It should show exact 12 volt.If less then that then fan is faulty and needs replacement.If fan tested OK then thermostat needs to be checked and replaced.Also check the coolant temperature sensor.If this sensor is not working then this will make the vehicle overheat and this will stop the ac and it stops running.

------------

For more car AC related problem troubleshooting

Click the link below:---

Car AC Blows Warm Air ?

http://technoanswers.blogspot.com/2011/10/car-ac-blows-warm-air.html

How to test AUTO AC pressure?

http://howtobyme.blogspot.com/2011/10/how-to-test-auto-ac-pressure.html

AUTO Air Conditioning Troubleshooting?

http://technoanswers.blogspot.com/2011/10/auto-air-conditioning-troubleshooting.html

AUTO A/C COOLING PROBLEM?

http://technoanswers.blogspot.com/2011/10/auto-ac-cooling-problem.html

Fixing refrigerant leak?

http://howtobyme.blogspot.com/2011/10/how-to-fix-refrigerant-leak.html

How to locate Car AC Refrigerant leak?

http://technoanswers.blogspot.com/2011/10/how-to-locate-car-ac-refrigerant-leak.html

CAR AC INTERMITTENT COOLING?

http://technoanswers.blogspot.com/2011/10/car-ac-intermittent-cooling.html

What causes INTERMITTENT COOLING on Car AC system?

http://technoanswers.blogspot.com/2011/10/what-causes-intermittent-cooling-on-car.html

Car AC making Noise?

http://technoanswers.blogspot.com/2011/10/car-ac-making-noise.html

BAD ODOR ON CAR AIR CONDITIONER?

http://technoanswers.blogspot.com/2011/10/bad-odor-on-car-air-conditioner.html

How to Recharge Car's Air Conditioner

http://repairhelpcenter.blogspot.com/2011/10/how-to-recharge-cars-air-conditioner.html