Question about 1994 Jaguar XJ6

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Heating my heater is heating and at 50 to 60 mph is turns to cold and back to heating, what would cause this?

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  • poppoph422 Nov 10, 2008

    were is this temp sensor located

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Air lock in heater matrix,heater matrix blocked with ****,disconnect pipes and flush it out whole cooling system is better then refill with mininum 50% ethylene glycol antifreeze

Posted on Nov 12, 2008

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  • Jaguar Master
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A faulty temp sensor for the automatic climate control.

Posted on Nov 09, 2008

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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

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My mitsubishi galant temp control lever won't switch to heat


that happened to me the heater core went out ive read alot of different things about 03 galants most of them have the same problem it started with a grinding noise turning the temp contol, its actually the heater control motor value it causes the heater core to go out

Dec 27, 2012 | 2003 Mitsubishi Galant

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My 2006 ford explorers a/c runs cold and then gets warmer and then back to cold. i have on occasion heard a thump when the heat or the a/c is operated. i have been told that it could possibly be a vacuum...


There is a diversion valve that closes off the heater core. If there is an air pocket or if pressure bypasses that could cause the thump. And allow the heater core to warm up and in turn cause the ac not to blow as cold. It is like having the heat and the ac on at the same time. To fix this make sure cooling system is free of air, and check the diversion valve to ensure proper working.

Jun 23, 2010 | 2006 Ford Explorer

1 Answer

Heater blows cold air when i turn it on blows a little warm air then it is cold


It sounds like you may be leaking coolant and are low on coolant. Low or no heat is a sign of the coolant being low. Vehicle can leak coolant from multiple locations. Top off the coolant level and see if the heat returns or gets better and get back to me.

Other causes could be a clogged heater core, Temperature door motor/door not moving, cylinder head gaskets, engine block, thermostat.

Jan 28, 2010 | 2004 Chevrolet Impala

3 Answers

HEATING PROBLEMS


Need more information. The most important thing would be to watch the heater water valve move when someone turns the control from hot to cold, back and forth?
Heater valve controls tend to be operated by vacuum, and switched by a heater computer. Lots of possibilities. But first tell us what you see move when operated? Valve is usually in engine compartment, in the heater hose. Follow the hot one.

Jan 03, 2010 | 1999 GMC Sierra

1 Answer

What could cause the heating to pack up in my 98 corolla?


Try it again today, if no heat, move back & forth from cold to hot, and bang with hand, under dash on passenger side where heater duct work is and wait a few seconds. Blend/air door may be stuck.

Jan 25, 2009 | 1998 Toyota Corolla

1 Answer

Heater only blows cold air untill your at 60 MPH


Sounds like heater core still plugged,and/or has air in system.I have had good luck with back flushing ( rinsing in reverse of normal flow) with a mixture of cascade dish washing detergent and water. This ("new and improved" Dex-cool antifreeze/coolant) sure does gum up and eat certain gaskets. When you have it refilled find a mechanic that has a vacuum operated filler. These are the greatest way to refill with no air pockets. Also could be the temperature blend door being incorrectly opened/shut though I doubt it.Hope this helps and please rate me!!

Jan 18, 2009 | 2002 Ford Taurus

1 Answer

Ford Expedition 2002 Front Heater blows cold air below 45 MPH


impeller is made of plastic on teh water pump and its slipping and spinning on the shaft renew before weather warms up as engine will overheat

Dec 31, 2008 | 2002 Ford Expedition

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