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Clogged heater core - 1997 Infiniti.5 Q45

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1999 Buick Regal heater blows cold. Is there a common problem with this model year and the heater?

Heater core could be bad/clogged, the rust over time and the little gaps could he clogged.. just because the hoses are warm doesn't mean the core isn't clogged.. did u check the temp setting Gage..

Nov 14, 2017 | Buick Cars & Trucks

3 Answers

My heater stoped working the a\c still works and fuses are fine

Either the heater core is clogged or busted, or a blend door is broken.
YOU TUBE has a lot of videos on this subject.

Jan 28, 2016 | 1998 Ford Expedition

1 Answer

No heat in my 95 tahoe

1995 huh? Time to check where your heater hoses connect to the engine block. These are known to clog themselves with rust and corrosion preventing coolent to flow through your heater core. Does your heater hoses get hot? If not, your clogged mate!

Dec 08, 2013 | Chevrolet Cars & Trucks

1 Answer

Heater blowing only cold air

you may have a clogged heater core or heater core bypass valve may be stuck closed. bypass valve is usually on the firewall on one of the heater core hoses. if valve seems to be operating properly. you will need to let the vehicle cool down. disconnect both heater hoses. connect garden hose to one side of heater core let water run through one side and then the other side. if the heater core is too clogged it may need to be replaced.

Jan 17, 2013 | 1993 GMC Sierra

1 Answer

Can hear water when running.

can be clogged heater core,try inspecting the heater core.


If its clogged it can be cleared with the use of Garden hose p[ump.The water has to be turn into the heater hose line and then water has to be removed out via the pump.


For complete step by step procedure,refer heater core flushing and other help links mentioned below.


Click the link below:-----


How to Flush Heater Core?


How to replace heater core on Chevy Astro?


Replacing heater core for grand marque?


How to replace heater core for All car models?

Click the link below:---


How to replace heater core on Buick Regal?


How to Remove Heater Core on 2008 Honda Odyssey?


Honda Heater Core Replacement?


How to replace heater core on Mitsubishi magna?


How to replace heater core on Mitsubishi eclipse?


These will help.


Nov 28, 2012 | 2000 GMC Jimmy

2 Answers

How do you clear a clogged heater core?

Charles,when they get clogged,you must replace,need help doing that,if so then we need the year,make ,model and engine size.

Nov 27, 2012 | 1999 Ford Escort

1 Answer

2001 rx300 no heat from heater

If your vehicle is not leaking or overheating(coolant level is fine) and there is no smell or fluid in the floor board, then the heater core is not leaking(most likely) but it still maybe clogged. Find the heater core lines, they run from tthe engine into the firewall, with the vehicle running and at operating temperature feel of both hoses, they should be warm to hot, if one is and the other isn't then you have a clogged heater core. If this is the case turn off the vehicle and let it cool down then pull the two hoses check to make sure there is no blockage in the hoses then use a hose and flush it through the heater core and see if anything comes out, this should clear out the heater core. If water will not come out of the other side of the heater core it is definitely clogged try flushing through the other way, if water still wont pass through you may need to pull the heater core from behind the dash and try to clean it or replace it. This is where I would begin.

Sep 24, 2010 | 2001 Lexus RX 300

4 Answers

No heat cadillac 1990 fleetwood new water pump and thermostat no vacuum leaks either

flush your system the heater core may be clogged hope this helps

Jan 16, 2010 | 1992 Cadillac Fleetwood

1 Answer

Heater core is clogged, not hot heat coming out.

you can try to flush it out by removing both heater hose going into the core and coming from the core. Hook a garden hose to the hose going in and then try flushing the hose going out. Normally once a heater core is clogged there is only the option of replacing it.

Oct 06, 2009 | 2003 Chevrolet S-10

1 Answer

Not enough heat coming out of the heater of 1988 2.5L Jeep Wrangl

it sounds to me your heater core is plugged. you can try to back flush it,being this vehicle is twenty yaers old,i would say to replace it

Dec 15, 2008 | 1988 Jeep Wrangler

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