Question about 1990 Ford Mustang

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Why dont i have heat in my 1990 mustang i dont kno if my heater core is shot cause there is no coolant on the floor. could there be something else wrong?

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Your thermostat is bad.

Posted on Oct 01, 2009

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Posted on Jan 02, 2017

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2012 mustang having no heat and no hot defroster. It blows just fineto vents, defroster and floor, but only cold air! When i change controls to floor only and press gas, after a bit i feel a little warmer...


Make sure radiator is full of coolant, this system heats the vehicle, also if you can smell coolant it may be a bad or leaking heater core? Hope this helps?

Feb 23, 2015 | 2012 Ford Mustang

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Leak in my 2005 mustang in passenger floorboard


Is it leaking engine coolant or only when it rains on the car. If it is engine coolant. you need to replace your heater core...

Feb 12, 2014 | 2005 Ford Mustang

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Heat not working


Sounds like the air blend door is not opening to let heat in.

Engine coolant is provided to the heater system by two 16 mm (5/8 inch inside diameter) heater hoses. With the engine idling at normal running temperature, set the heater-A/C controls as follows. Temperature control to full Heat, Mode control to Floor, Blower control to the highest speed setting. Using a test thermometer, check the air temperature coming from the center floor outlets and compare this reading to the Temperature Reference table.

If the floor outlet air temperature is insufficient, check that the cooling system is operating to specifications. Both heater hoses should be HOT to the touch (the coolant return hose should be slightly cooler than the supply hose). If the coolant return hose is much cooler than the supply hose, locate and repair the engine coolant flow obstruction in heater system.

POSSIBLE LOCATIONS OR CAUSE OF OBSTRUCTED COOLANT FLOW
If coolant flow is verified and the heater floor outlet temperature is insufficient, a mechanical problem may exist.

POSSIBLE LOCATION OR CAUSE OF INSUFFICIENT HEAT
  • Obstructed cowl air intake.
  • Obstructed heater system outlets.
  • Blend-air door not functioning properly.
TEMPERATURE CONTROL
If heater floor outlet temperature cannot be adjusted with the heater-A/C control temperature control lever, one of the following could require service:

Jan 21, 2014 | Cars & Trucks

1 Answer

The heater blows cool air not warm air


First check and make sure that your coolant(antifreeze) level is full, the hot coolant runs through the heater core and than air is blown over the heater core heating the air for the heater. if the coolant is full you than need to check the thermostat and make sure it is functioning properly. finally if both of those are not the problem it is possible that your heater core is bad, however if the heater core is bad you will notice coolant leaking onto the passenger side floor. so if the floor is dry I would say the heater core is not the problem

Mar 27, 2011 | Nissan Quest Cars & Trucks

1 Answer

I have front and rear a/c. it has never blown heat in the back of my van and now i have smoking coming from under the hood and blowing out of the front vents. my front passanger floor board is soaked. what...


Your heater core is shot. Coolant leaking on the floor (wet) and driping onto exhaust (smoke).
Replacement of the heater core is the only proper fix. As a temporary measure , you could disconnect the hoses that run to it , and plug them (or join them together). Engine will run , but you will have NO heat in car. enough of your coolant has probably leaked out to cause engine problems. Make sure it is refilled and air removed from system before driving.

Feb 09, 2011 | 2000 Mercury Villager

3 Answers

When heater is on i smell coolant


Hi

This is caused by a leak in either the heater core itself or the hoses connecting to the heater core.

Rust and corrosion can clog the tiny passages in your heater core. Sometimes the block becomes so severe that pressure builds up in the heater core causing it to spring a leak of coolant - enough to give off the smell you describe.

You can find examples of the heater core at this link
http://www.autopartswarehouse.com/shop_parts/heater_core/dodge/ram_50.html

Solution: Replace heater core or hoses depending on what you find.

Hope this helps. Please do rate this answer. Many Thanks.

Sep 01, 2009 | 1999 Dodge Ram

2 Answers

Replace Heater Core for Volvo S70 (1999)


It is your heater core. I fixed mine for $144. Ordered the new part on Ebay and followed these instructions http://www.volvospeed.com/vs_forum/index.php?showtopic=9717 It was very simple, I'm a middle age grandmother! The hardest part was cleaning up all the antifreeze. You will need a shopvac, a small one is $20 at WalMart.

Jan 12, 2009 | 1999 Volvo S70

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