Question about 1995 Buick LeSabre

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Heater i have ask before and tired every thing you all said. the heater makes a noise then it comes on but most of the time the heat is cold. does it have a computer chip in it some where that may need to be changed? my husband has lost his job I have no extra money to take it to a repairman.

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I don't have my manual, but from memory there is a controller just below the radio this has a slide resistor that sends a signal to the heater mixer door controller, probably the heater mixing door controller isn't working, you can disconnect the linkage, behind the glove compartment, and manually move the lever to get heat, you might even be able to hook up a wire to make it possible to move this remotely. The controller is about $600 new, also get a manual from one of the auto stores or if you can afford it get a factory manual they are the best.

Posted on Dec 31, 2008


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Posted on Jan 02, 2017


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My heating isn't working, it sometimes works but majority of the time it blows cold. Also when the engine is running, there seems to be a noise coming from the engine, could these be related? Engine temp...

No heat or low heat in a water cooled engine is worthy of an immediate check as major damage to engine could be the result of continuing to drive it. Things to check:

These two things may cause no heat and possible not ever show as a problem on the temp gauge or temp warning light until far to late:
Low coolant/antifreeze level
Frozen coolant/antifreeze
Stuck thermostat

Other possibilities that may/may not show other signs of trouble as well:
Failing water pump (this would also explain some noise, typically like a grinding, scraping or bad bearing noise)
Slipping belt (Typically associated with the famous belt squealing or chirping noise)
Clogged radiator and/or heater core
Non-operating temperature control valve
Stuck thermostat

Hope this helps!

Nov 24, 2013 | Ford PUMA Cars & Trucks

1 Answer

Have a 1999 limited edition jeep cherokee atomatic 4.0 liter 6cyclinder. doesnot have heat. need to know how to remove an replace step by step heater core

Typically a heater won't cause a no heat condition unless it's clogged. On these Jeeps, it will usually leak either inside or outside of the truck. The whole dashboard has to come out including the steering column in order to access the air box, which also has to come out in order to change it. If you are having a no heat issue, you may want to check a few things first. Make sure thermostat is working properly and installed correctly. Verify coolant level is good and no air pockets in cooling system. Make sure the blend door motors are working and switching from cold to hot. A good way to see if you have good flow through the heater core is to feel the heater hoses at the firewall where they connect, make sure they are both hot after engine is fully warmed up. If 1 is hot and the other is cold, you know the core is clogged. If that's the case, you can try disconnecting the hoses and back flushing the heater core to get any dibris out. Otherwise, you will need a book or manual for the procedure, it's very involved and time consuming.

Dec 18, 2012 | Cars & Trucks

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I replaced the heater coil in my 2005 chevy equinox and it is still over heating and the heat only works for a short time , then the cold air blows, then the heat kicks back on. A certified mechanic did...

Its a combination of 2 things water pump failing and thermostat stuck closed / or open. Replace these and you should be all fixed. Also make sure your cooling fans operate correctly.
Good luck.

Nov 01, 2011 | 2005 Chevrolet Equinox

1 Answer

Weather dropped to around 20 degrees F, the washer fluid is empty. the car is off, key out of the ignition, but there is a steady humming noise coming from under the hood.

Hi there is a very small fuel powered webasto heater under the bonnet that could be making the noise that is circulating and heating the engine coolant to ensure a first time start and quick interior heater response this will operate at a pre set minimum temperature or you can set it to come on
at a higher temp if you like your heater toasty on a not so cold day
however this does run off the fuel in your tank

Dec 14, 2010 | 2005 BMW X5

1 Answer

No Heat. Replaced heater core and thermostat, fan makes noise(works?) but no heat.Is it possible fan makes noise but doesn't work correctly? At a loss, sure could use some guidance. Thx F 8

I suggest to check your heater control valve. It's mounted on heater hose under the hood near the firewall. It should open and close when you move the cold-warm trigger in your dash. Ask somebody to move the trigger during you're checking valve operation. Eventhough the valve external control is moving make sure that the control is well fixed and that the valve shaft is moving.
If it seems to operate correctly, it could be cluggered verify that also.

Finally, if the valve is OK, new heater core and t-stat installed and that the fan works and still no heat, then I would say that the system has to be bleeded to remove air pocket in the line. You should find a bleeder screw on the top of the engine or if not let the engine run with radiator cap opened until all the air/bubble escaped.

Most of the time it should solve the problem. Otherwise have to go more in depth check water pump and front radiator.
Hope it will help
Let us know about results

Dec 20, 2009 | 1984 Honda Accord

1 Answer

Clunking noise behind glove box high heat nor control

sound to me like the blend door is out of adjustment, have this lookrd at by a certified a/c tech,should be easy to fix

Apr 29, 2009 | 1996 Ford Explorer

1 Answer

99 malibu not blowing heat or making noise

Since you did not mention it, I'll assume the blower is blowing? Preliminary checks to system are: Make sure coolant level is full and has the proper antifreeze mix (heater core can freeze up pretty quick)
If you have a heater control valve make sure it's working. Make sure that there is flow through heater core. one hose going to it should be really hot, the exit hose should be slightly less hot but not cold. Make sure that the plenum door inside the car in the heater box is moving when you change setting from a/c to heat. In checking these things, it's likely you will find the problem or a good clue to it's origin.
good luck

Jan 16, 2009 | 1999 Chevrolet Malibu

1 Answer

1992 honda accord ex 4 door heater not blowing

You may have a clogged heater core, leaking heating cores still provide heat.

Dec 04, 2008 | 1992 Honda Accord

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