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Overheating, eletric fans?

2009 ford flex overheats at stop lights or idle. AC doesn't work at an idle but freezes you out on highway. All fuses good!

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Hi, did you check the relays?
Does the fan kicks in when the A/C is on?

Posted on Jul 23, 2013

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Posted on Jan 02, 2017

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Overheating! The van has new radiator, fluid, cap, heavy duty water pump, tsat, fan clutch. BTW the heads were redone not to long ago.


Did you change the thermostat? If not opening properly or far enough, that could be the cause of your overheating.

Use heater full blast with windows open to add additional cooling till you locate the source of the problem.

Sep 08, 2016 | AC Cars & Trucks

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Car overheats when using ac.


You can try several things. The radiator fan is controlled by a thermal switch and in some cases the A/C maximum air setting. Do you know if the fan is turning on? Some have 2 speeds. The thermostat is a low cost guess.

The engine idle can be affected by overheating. Also turn off the A/C and see if that makes a difference in idle or overheating.

Jun 11, 2015 | Ford Cars & Trucks

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2009 ford flex overheating


Probably need an automotive electrician to find out why the fans don't work. When AC is on, the AC fan should be on constantly. Coolant has to get quite hot for the regular radiator fan to come on, but sounds like the fans are the problem.

Jul 23, 2013 | Cars & Trucks

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This isn't the hottest it gets. It goes all the way up to almost the red. It's over heating and we have changed the water pump,


A water pump in itself WILL NOT cause and engine to overheat, if it leaks badly and the coolant level drop very low then this will indirectly cause the engine to run hot or overheat. What I see in the video clip is NOT overheating, the fan doesn't come on until the engine reaches about 230 Degrees Fahrenheit, that is pretty well up about where the needle is in the video, if the cooling fan never kicks on after about 20 minutes of idle or doesn't engage when the AC (this assumes the AC is working)n issue.

Oct 04, 2012 | Cars & Trucks

1 Answer

96 mitsubishi eclipse overheating while AC is on!


Try replacing your cooling fans since both fans are probably not coming on at the time the a/c is on. If your car uses a single fan, then it must have a hi and lo speed so probably the low works but the high doesn't. If you can barely hear the fan spin then it is probably working in the low speed position and you should check that.

Jun 26, 2012 | Mitsubishi Cars & Trucks

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On a 2001 saturn L series, 2.2 litre automatic. gas gauge doesn't work and the temp light blinks continuously while the temp gauge needle jumps continuously. i've checked the coolant levels,th


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

---------------------------
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.

Feb 12, 2012 | 2001 Saturn L-Series

1 Answer

1998 ford taurus runs at normal temp at highway speeds with A/C on however it will overheat in traffic on city streets with a/c on


Sounds like one of the cooling fans isn't working. There should be two. One is controlled by engine temperature. The other comes on the instant you turn on the A/C. There might be a slight delay.
It could be that this fan is not working. It could be the fan itself, its relay a fuse or the temperature sensor. But, if its not not working, it will cause overheating. Hope this helps.

Aug 04, 2011 | Ford Taurus Cars & Trucks

1 Answer

2006 kia optima overheating, no apparent leaks, top radiator hose gets hot lower never heats up, fans dont come on


I would be looking at the radiator fans themselves, especially if the fans are open
framed motors. I had the same problem with an intermittent fan on a PT cruiser,
If your A/C doesn't seem to be working right at stop lights then the fans are
most likely not operating correctly since they assist the condensing coil when idling.
Second thing I would suspect is a thermostat which is stuck closed. (This will cause overheat).
Hope this is helpful.

Jul 31, 2011 | 2006 Kia Optima

1 Answer

MY VAN IS OVERHEATING WHAT ARE THE STEPS FOR TROUBLESHOOTING


When does it overheat? At idle, or at highway speed? Is the coolant level where it should be? Overheating at idle or highway speed may be a faulty thermostat. If it overheats only at idle then it is likely a cooling fan fault. To determine if the fan is working start the engine and switch the A/C on, the fan should come on, if it does not, then you need to have the computer "scanned" to see if it can detect the reason for the fan not coming on. If the fan is switching on, then you need to have the water pump checked to see if in fact it is pumping coolant (this could also be the cause of overheating at highway speed) If you are overheating only at highway speed you may want to have the enigine checked for a blown head-gasket, or faulty radiator.

Apr 18, 2011 | 1997 Oldsmobile Silhouette

1 Answer

My 2006 Dodge Caravan has satrted to overheat.......This just started with the idle going high while stopped and while driving then all of a sudden the temp gage went from cool to a quarter of the way from...


Hello and welcome to FixYa! If you have overheating problem, it can lead to multipleissues. You may be running on low coolant that's why the vehicle overheats. Ifthat's the case, please add coolant and make sure that it sits on the rightlevel, too much coolant can cause overheating too for coolant will overflow. The vehicle may have a faulty or worn out radiator blowermotor that's why it overheats. If that's the case then you will need a blowermotor replacement to resolve the issue. If the radiator is clogged with dirt and rusts this issueoccurs too. The coolant doesn't flow normally on the cooling system if it'sclogged. If that's the case, I strongly suggest that you have the radiatorflushed to drain out dirt and rusts. If you think that the radiator served youenough then it's better to have it replaced. Please do check the radiator hoses, If you have worn outhoses it can cause coolant leakage which can result to overheating. A tiny holeis good enough for the vehicle to overheat. A faulty thermostat sensor can cause the issue too. If youhave worn out thermostat, the fan may not trigger that's why the fan won't workwhen under stressed conditions. A blown radiator blower fuse can cause thisissue too so I suggest that you check the radiator blower fuse and replace itwhen necessary. What causes the radiator blower fan fuse to blow? It's becauseof a failing radiator blower motor, If that's the case have the radiator blowerfan motor replaced. If the fluid in radiator doesn't circulate then it meansthat you have a blown head gasket or a faulty water pump. I suggest that you gofor the water pump replacement first specially if you think that it's near theend of it's service life. Usually, water pops out the radiator when engine isreved (a sign of faulty water pump and possible blown head gasket). Hope you find this information helpful enough and thank youfor using FixYa! Have a good one!

Oct 28, 2010 | 2006 Dodge Grand Caravan

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