Question about 1995 Chevrolet Caprice Classic

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1995 caprice classic, No warm heat

I changed thermastat, blead air pocket, temp gauge reads fine but I still do not get hot air from heater. TY for your time

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  • Anonymous Feb 24, 2009

    I had the same issue...flushed the heater core 3 times, but in the end, had to replace the core in order to get consistant heat. They apparently have history of plugging up over time.

  • Anonymous Mar 03, 2009

    no warm heat

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  • Master
  • 837 Answers

Have you checked the heater core hoses? If they are not "hot" the heater core needs to be replaced

Posted on Feb 07, 2009

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1 Answer

Heat blows out air but does not get warm, any ideas?


If it is faulty, yes.
Does the temp gauge show the engine is warming up to normal temp ?
Is the radiator full of coolant ?
Are the heater hoses getting hot ?
It could also be a faulty blend door under the dash. The blend doors direct air thru the heater core and the vents.

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I have a 1995 chevy caprice classic and it keeps overheating, I've changed the thermostat,water pump and I noticed my fans weren't on at all but when I unplug the water pump the fan cuts on.


Your cooling fan relays are controlled by the Engine Control Module (ECM). What you are unplugging is probably the Engine Coolant Temperature Sensor (ECT). The ECM will default to "fans on" if it loses the circuit to the ECT. (It loses it when you unplug it) This is why the fans come on when you unplug the connector. The engine might be overheating because the ECT may be malfunctioning and "lying" to the computer about what the actual engine temperature is. If this is the case, the ECM is not turning the fans on because it doesn't "think" it is hot enough to need them. Then again, you could have a faulty temperature gauge that is making you think the engine is overheating when it is not. (If it is boiling over, then it is OBVIOUSLY overheating and you can just disregard that last statement.)
Anyway, the only way to properly diagnose the cooling system on your vehicle is to access the live engine data and look to see what temperature the ECM is seing while you take an actual reading with an infrared thermometer or a pyrometer and compare the two. Yhe thermometer or prometer reading should be within about 5 degrees of what the ECM "thinks" the temperature is. If there is a larger error than this then the coolant temp sensor should be replaced. If the reading is within this range and the temperatur gauge reads hot when it is not, then the gauge should be replaced.
Since the fans come on when you unplug the sensor, you know that all the fan circuits are working and the ECM is capable of controlling them, so it almost has to be a computer INPUT problem, not an OUTPUT problem.

Feb 26, 2011 | 1995 Chevrolet Caprice Classic

1 Answer

My blower works for air/heat but only blow luke warm air. My freon is charged. Any ideas?


Look for a heater control valve under the hood connected to one of the heater hoses and make sure the valve is operating properly. This is what allows the hot water to pass through your heater core. Also your heater core may have a blockage.

Dec 02, 2009 | 1995 Chevrolet Caprice Classic

2 Answers

Replaced radiater ,thermastat still no heat and


Did you run engine from cold, WITH HEATER ON, and fill cap off when re-filling system? If not, try that and see what happens. Let the engine get up to operating temperature and rad fan come on to cool 2 or 3 times before putting cap back on.

Nov 17, 2009 | 1995 Subaru Legacy

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1994 chevy caprice no heat. changed termostat. antifreeze full. fans in back of radiator are not moving


Heater core is plugged or you have a air pocket. If you take off the heater lines and try blowing through them both ways. The fans will not move until the engine gets hot.

Oct 24, 2009 | 1994 Chevrolet Caprice Classic

1 Answer

Heat gauge on dash always reads cold


either a faulty temp sending unit or a thermastat stuck open assuming all wire connections are good. if heater blows hot id lean towards the temp sending unit. please rate me trying to make a buck

Mar 19, 2009 | 1995 Nissan Pathfinder

1 Answer

2000 expedition heat problem


first of all I would make sure the car has proper amount of coolant and you are right it is very possible you have an air pocket in the system also ask your self did you change the thermastat after you did the heater core when the car is cold make sure there is coolant at the cold mark on the reservior bottle because you might not have enough coolant then start the car and get it up to temp and if the coolant goes not go up to the hot mark when the car gets to temp you do not have enought coolant just keep adding coolant and you will see the bubble after the thermastat opens

Jan 02, 2009 | 1999 Ford Expedition

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Overheating


Yes, you re correct! thats a thermostat issue.

Dec 15, 2008 | 1995 Subaru Impreza

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No heat


what if both hoses are hot. and on idle heat comes on but driving it's blows co

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1 Answer

Overheating


Posible thermastat sticking closed. If thermastat doesn't open heated water is trapped in the engine causing it to run hot and not allowing hot water to travle to the heater core when called for.

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