Question about 2002 Jeep Grand Cherokee

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Heat takes along time to warm up and still not hot

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This sounds like a bad thermostat, this sounds like the thermostat is stuck open and thats why it takes a long time to get some heat,

Posted on Dec 29, 2010

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  • Master
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Sounds like bad thermostat. [check if the tempature gauge stays on the low side.]

Posted on Dec 29, 2010

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Posted on Jan 02, 2017

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SOURCE: takes a long time to heat my 1998 yukon

Check engine coolant thermostat to see it's not stuck open.

Posted on Dec 20, 2008

dgjtex
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SOURCE: After car heats up (slow to heat) it stil blows cold until moving

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Posted on Dec 22, 2008

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SOURCE: takes very long time to warm up never hot

I experienced this problem on my own Hardbody and found the thermostat in engine stuck in wide open position.No thermostat can cause this as well.Advise to stay with OEM operating temp. Thermostat. Aside from that, perhaps the heater door or heater control valve is not fully opening. Keep us posted on fix.

Posted on Nov 12, 2009

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2 Answers

I have a 2006 Dodge Grand Caravan. Until recently the heat and air worked fine. The temperature gauge is registering to very hot but nothing but cold air blowing. after a few minutes the temp goes back...


First you need to put in a thermostat. On most vehicles it is not a hard or expensive job. The gauge going up to very hot is sign the thermostat is sticking and taking too long to open. The heat is fed to interior by hoses from same system as radiator / thermostat. If thermostat is staying open too much (because it can also stick open when going bad) it will take a long time to get warm. The heater box under dash has both the air conditioner and the heater box in it and if the door is stuck to A/C side you will not get heat. Door is usually opened by vacuum hose, cable, or electric motor. If you can look under dash and see the lever that moves the door you may find it is not moving when you move lever from hot to cold on dash. If cable driven you may be able to see cable not connected or door lever broken. But when engine reads warm on gauge - look under hood for round hoses (the size of washing machine hoses) that go from engine into passenger area and see if they feel warm. If hoses cold you are not getting warm water to system (clog in system or thermostat), if hoses warm then door to heat box not moving.

Jan 11, 2015 | 2006 Dodge Grand Caravan

1 Answer

Heat delayed


heat not blowing or not getting hot? if it's not blowing it may be the blower motor going out but if its just taking a while to get hot it could be the duct exchanger which could be a vaccume leak or you could be low on engine coolant, if the engine coolant is low the heater core doesn't get enough coolant to warm the air that passes thru it.

Nov 08, 2013 | 2007 Nissan Altima 2.5

1 Answer

During winter time, my Toyota Camry '96 takes too long for the heat to warm up the interior but when it finally starts to warm up, it sure does not feel hot enough. Any suggestions what to do o h


i would say it is the the thermostat. it makes the engine heat up to i am pretty sure 195 degrees at a fairly quick rate then opens to cool the engine once to running temperature and opens and closes as needed to keep temperature at the manufactures setting. some get stuck open so they never truly heat up.

Dec 12, 2012 | 1996 Toyota Camry

1 Answer

Heater and defroster don't work well


Connie this sounds like your thermostat in the engine is stuck open not letting the water stay in the engine block to heat up. The fix is to replace the thermostat with a new one that will allow the water to stay in the block to warm up. The typical symptoms of a stuck open thermostat is that the air will blow somewhat warm but never hot in the winter time, but it will take a few miles for the air to warm up at all. I would check with the dealership and find out what degree thermostat to replace it with. I run a 180 degree in the summer and a 195 degree thermostat in the winter just to have hot heat in the winter. I hope this helps

Nov 20, 2011 | 1992 Honda Accord

1 Answer

When cold weather warming up car takes a long time to heat up blows out cold air then after you drive for a while it warms up


sounds like the thermostat might be stuck open. the engine uses hot antifreeze to heat up the inside of the car if the thermostat is stuck open all of the antifreeze will be circulating all the time and it will take a long time to heat up. I would try to replace the thermostat

Feb 16, 2011 | 1998 Chevrolet Blazer

2 Answers

2007 grand caravan heat takes about 10 minutes plus to get warm-is this normal? It actually blows cool air for that long, but eventually blows hot air. Replacing the thermostat which might have been...


sounds like you have a actuator problem or the heater core may be stoped up check and make sure actuator is moving if not replace

make sure both heater core hoses are hot to touch at operating temp if both are not hot replace heater core

and of course check your coolant/antifreeze and insure it is full no water no heat

Jan 15, 2010 | 2002 Dodge Grand Caravan

2 Answers

Replaced radiater ,thermastat still no heat and


Did you run engine from cold, WITH HEATER ON, and fill cap off when re-filling system? If not, try that and see what happens. Let the engine get up to operating temperature and rad fan come on to cool 2 or 3 times before putting cap back on.

Nov 17, 2009 | 1995 Subaru Legacy

2 Answers

Takes very long time to warm up never hot


check the thermostat it is most likely stuck open. bobg33

Nov 12, 2009 | 1992 Ford Explorer

2 Answers

After car heats up (slow to heat) it stil blows cold until moving


You have a circulation problem, heater core may have restriction that why heat only comes when you drive ,also you may have a thermostat that stuck in the open position. Good Luck

Dec 22, 2008 | 2000 Dodge Caravan

1 Answer

Takes a long time to heat my 1998 yukon


Check engine coolant thermostat to see it's not stuck open.

Dec 20, 2008 | 1998 Acura TL

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