Question about 2001 Jeep Grand Cherokee

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When the heater is on it blows but it does not heat. I have notnoticed any leaks or overheating. Any ideas?

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Sounds like the blend door to the heater core is not opening.

Posted on Nov 04, 2010

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1 Answer

I have a 2007 Saturn, Aura. Heater does not blow hot, slow coolant leak, & it also over heats. Please help! I'm freezing when I'm in my car!!!


You need to fix the coolant leak, then refill and bleed cooling system, then you will get heat and cure overheating problem too

Dec 16, 2015 | Cars & Trucks

1 Answer

Overheating


To troubleshoot this types of problem,click the link below :----http://howtobyme.blogspot.in/2012/02/heater-blows-only-from-defrost.html
--------Go through the procedure to confirm the issue.

------
Engine Overheats and heater blowing cold?

http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html

---------
Heat blows cold on drivers side and hot on passenger side?

http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html

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For car running hot and overheating issues, I suggest to you go through this help links. Click this link below and go through the troubleshooting procedure to take care of the problems: ----Car runs hot? http://howtobyme.blogspot.com/2011/11/car-runs-hot-in-traffic.html
-----------All types of car overheating problems and troubleshooting?

http://technoanswers.blogspot.com/2011/11/all-types-of-car-overheating-problems.html
Car freeze overnight and started overheating while driving?http://technoanswers.blogspot.com/2012/01/car-freeze-overnight-and-started.html-----------Engine Overheats and heater blowing cold?

http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html

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Car overheats and Air blows hot at idle?
http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html
--------overheating? http://schematicsdiagram.blogspot.com/2011/12/buick-century-overheating.html
----------Car engine Overheats and transmission starts slipping?http://schematicsdiagram.blogspot.com/2011/12/car-engine-overheats-and-transmission.html
----------This details will help.Thanks.

Jan 30, 2012 | 2003 Chrysler PT Cruiser

1 Answer

2003 toyota celica vvtli 190bhp heater blowing col dair only and engine over heating. no signs of leaks oil clean, coolant resivour just above min any ideas whats broken cheers


If it is blowing cold air, that means the coolant level is low, the heater core has no coolant in it. Sounds like a head gasket is leaking.

Sep 27, 2017 | Toyota Celica Cars & Trucks

2 Answers

My Buick skylark doesn't leak but it over heats..


To troubleshoot this types of problem,click the link below :---

All types of car overheating problems and troubleshooting? http://technoanswers.blogspot.com/2011/11/all-types-of-car-overheating-problems.html

--------

heater blows through defrost?

-http://howtobyme.blogspot.in/2012/02/heater-blows-only-from-defrost.html
--------Go through the procedure to confirm the issue.

------
Engine Overheats and heater blowing cold?

http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html

---------
Heat blows cold on drivers side and hot on passenger side?

http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html

-----------

This will help.Thanks.

Dec 08, 2011 | 1995 Buick Skylark

1 Answer

It is leaking coolant, and overheating, i have replaced the radiator, and the hoses, also the heat only blows from the window vents


Check the heater core for any leaking. Do you know the source of the coolant leak? Check the overflow?

Jan 21, 2010 | 1998 Cadillac DeVille

3 Answers

Would the heater control valve malfunctioning make the engine overheat blowing hot air out the heater one moment,then not blowing the hot air, temp gage spikes 225 plus. The motor takes awhile to heat up...


Heater control valve malfunction will not cause engine to overheat unless coolant is leaking externally...Overheating going down the road can be the result of a few different things...Partly clogged radiator...Insufficient air flow due to possible fan problem...External coolant leak...Make sure fans are operting properly and have cooling system pressure tested for leaks...Gaining and losing heat on the inside of the vehicle usually means system is low on coolant but you must find out where coolant is going

Jan 06, 2010 | 2004 Chevrolet Impala

1 Answer

My 01 grand am gt is overheating the cars heat will only blow cold air and alot of thick white smoke comes out of the exaust


White smoke is a sign of burining antifreeze. When heater is not blowing warm air, that is a sign of faulty heater core.
No power, coolant loss, overheating, is sign of headgasket leak.
Double check your thermostat as well.

Sep 09, 2009 | 1999 Pontiac Grand Am GT

1 Answer

2000 grand cherokee overheating heater blowing out cold air


Generally this condition is the result of coolant loss, or failed thermostat. If coolant goes below cylinder head level, or thermostat remains closed,heat will stop working. Do not drive with this condition as excessive heat buildup in cylinder head can and will do serious damage to heads and or head gasket.
Find out where leak is and correct it. Change thermostat as it may also be damaged. Check for excessive steam from tailpipe or miss in engine, as these symptoms indicate a cylinder head problem.

Jan 03, 2009 | 2000 Jeep Grand Cherokee

1 Answer

1986 VW Golf GTI 1.8 SOHC cooling issues, and heater blows cool


try changing cooland temp sender,your heater matrix maybe blocked(common)what temp is it running at have you checked it with a gauge?

Dec 22, 2008 | 1986 Volkswagen Golf

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