Question about 1994 Chevrolet Corvette

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No heat in 1994 corvette, hoses are warm, changed thremastat but still no heat

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Sounds like heater core is plugged. Are both hoses from heater core hot?

Posted on Feb 13, 2014

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Posted on Jan 02, 2017

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1993 corvette after setting 5 days runs rough for 5 miles then runs good what could this be


Runs fine when it is warm so it has to be something with a cold starting engine having to do with air, fuel mixture, not being right for cold engine. Could also be an ECM issue.

Dec 13, 2015 | 1993 Chevrolet Corvette

1 Answer

I just bought a 1994 Subaru Loyale, the heat is not very hot. The fan blows but the air is warm not hot. The previous owner told me when he replaced the water pump he also put a new 195 degree...


very important to have proper coolant solution.50/50..too much antifreeze will make heater act up.antifreeze tester will eliminate that.warm engine and check both heater hose if they are the same tempature.if not remove both hoses and garden hose through the
heater core to flush both ways.try not to disturb the heat core and remove hoses where they connect to the engine.let me know if that helps

Feb 12, 2011 | 1994 Subaru Loyale

2 Answers

My 1998 Honds CRV puts out very little heat


change the thremastat that could be or there may be air in the core disconnect the two hoses that go to the and run water threw the core with a garden hose hook hoses back up and that would get the air if u dont have a leak in the system goodluck hope i help out.

Jan 21, 2011 | Honda CR-V Cars & Trucks

1 Answer

1994 corvette air conditioner cold air during acceration and then on deceration it blows out hot air. And in the winter the heat blows cold during driving and gets warmer when not accerating and slower...


On the a/c send the radiator to flush,as for the heater you need to check the vacuum hoses that goes into the contrl panel,check for a leak on vacuum in the engine as well.

Sep 24, 2010 | 1994 Chevrolet Corvette

1 Answer

My car is overheating


check and make shure the fan is cycleing proprly

Jun 04, 2010 | 1992 Audi V8

1 Answer

Heat is barely getting warm, temp hand is in normal position.Could it be the themostat or heating coil


Could be the heater core is plugged. Open hood and see if you can find where the hosed go through the firewall of the car. Once motor is warm check to see if both hoses are warm. If not the cor is plugged and needs to be replaced.

Hope this helps.

Feb 03, 2010 | 1994 Ford Taurus

1 Answer

Can a thremastat stuck open have low engine temp and bad gas milage


If the thermostat is stuck open it would eventually get hot after a while. It's like some people think you can remove the thermostat to keep the engine from getting hot so in theory it could for a little while, however it would eventually overheat. As for the gas mileage being bad yes if it was stuck open and was not warming up fast enough the computer would take longer to go into closed loop, meaning the engine temperature takes to long to heat up so it burns rich until it does warm up enough, however it would be a minor change of mileage say 2 to 3 miles to the gallon. Hope this helps.

Jan 24, 2010 | 1997 GMC Jimmy

1 Answer

No heat. Guage shows medium range between hot and cold, but no heat out of diffusers. My first thought is the thermostat, but thought that I would check with others first before I go changing parts.


Check both heater hoses under the hood put your hand on each one and feel the temperature make sure the engine is warmed up to operating temperature though. If one feels hot and the other one is cold or luke warm your heater core may be plugged up also on those hoses see if there is a heater valve connected to either one if so make sure it is operating properly.

Dec 23, 2009 | 1994 Dodge Caravan

1 Answer

1994 corvette starts good if sits for 2 days but when warm, have to crank it to start and then a lot of gass smell...kind of bucks and some times backfires until warmed up


Coolant temperature sensor is bad. Telling computer that the engine is still cold and over fueling as if it were a cold engine.

Aug 24, 2009 | 1994 Chevrolet Corvette

1 Answer

No heat


under the hood is aheater control valve fell both heater hoses make sure they are both warm if not this valve is your problem

Oct 24, 2008 | 1994 Ford Thunderbird

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