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1986 corvette greenwood The air is blowing cold but not hard in max or norm position.

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1986 Corvette heater / AC problem. Blower and air distribution all work, but cant get, warm or cold air. Only ambient temperature. The ext and int sensors are functional. Where do I look next?


If you haven't yet, join some Corvette forums online. You'll get a wealth of information there. This sounds like a possible core problem but it's hard to diagnose over a keyboard. Good luck with it!

Feb 04, 2017 | AC Cars & Trucks

1 Answer

2004 pt cruiser a/c Freon is good but will not blow cold air, and vents through the blow off valve every now and then. any ideas ???


Radiator/condenser cooling fan needs replaced if it not cycling as called for by AC and engine cooling.

Aug 12, 2013 | 1986 Mitsubishi Mighty Max

1 Answer

Heat blows cold air front and rear when sitting still or @ low mph.


Usually a sign of low coolant or a blockage in the circulation.

Feb 26, 2013 | 2003 Chrysler Town & Country

1 Answer

Corvette horn not working


I have a 1999 corvette and the horn will not blow when pushing on the horn pad. It beeps when locking the car and security system.how do I locate the problem. Thanks Bob

Jul 12, 2012 | 1986 Chevrolet Corvette

1 Answer

I have a 1989 corvette with greenwood package that cranks for about 50 seconds before it will fire, runs at a ruff idle, and after it is hot and running for awhile it will shut off and be really hard to...


The only part that would come to mind after all of this would be the fuel pump relay. This is located on the fire wall on the drivers side of the car. When that goes bad it does not allow for adequate fuel to cycle through.The other thing would be timing. You need fuel air and spark for the vehicle to fire. After all the test and after replacing the fuel pump relay. I would do a compression and a leak down test. Are you sure that the timing did not jump a gear? You can also look and test the IAC (Idle Air Control) or the MAF (Mass Air Flow Sensor). Also do a test to check fuel pressure. The last Corvette that I worked on personally that had this issue it turned out to be the Fuel Pump Relay. Good luck let me know if you have any further questions.

Jun 16, 2011 | 1989 Chevrolet Corvette

1 Answer

I have a 1986 Corvette that blows the 10amp fuse for the fuel pump. How can I determine the cause?


If the fuse blows after turning the ignition key to the "on" position you might try disconnecting the electrical connector to the fuel pump and turning the key to the "on" position. If the fuse still blows there is a short in the wiring to the fuel pump. If the fuse does not blow it is more than likely the fuel pump.

Jan 27, 2011 | 1986 Chevrolet Corvette

1 Answer

Hi! I have a 2006 Saturn Vue 4 cylinder with 91,000 miles. I always keep my AC on max. The other day I turned the temp warmer. Well the next morning the AC stopped blowing cold air. I noticed before...


The car will idle funny due to the air-conditioner on ,when on it takes power from the motor about 10-20hp depennding,and with the air on all the time its robbing you of fuel mileage.put the temp back to cold and use norm-air max should be used to get real cold and then switch to norm.if you want warm air,then put on vent and stop wasting fuel,with a.c on when you have it on the red area.

Aug 29, 2010 | Saturn Vue Cars & Trucks

1 Answer

1986 VW Golf - blows cold air out vents


add coolant....if that doesnt work...check the thermostat...then if its not that its the water pump

Jan 14, 2009 | 1986 Volkswagen Golf

1 Answer

1986 VW Golf heater blows cold air


The heater in your car depends upon a flow of hot coolant going through the heater core in order to get hot air into the car. If the heater core is partially plugged, it will restrict the flow. If you have a head gasket that is putting exhaust into the cooling system, it will eventually get into the heater core. When this happens there is no coolant in the heater core to make the air warm. If the water pump vanes have corroded away the result will be very poor coolant circulation causing the heater to not blow hot air. If your car is equipped with a heater control valve that is not functioning properly, the coolant flow will be restricted. One or a combination of these factors is likely the culprit in your case.
if the car is not overheating, the thermostat is working fine.... replace or flush the heater core multiple times to try and eliminate sediment build-up.

Jan 14, 2009 | 1986 Volkswagen Golf

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