Fan does not speed up when AC is on, is this could be the source of overheating problem?

10

Asked by Jul 31, 2016 at 04:28 PM about the 2006 Ford Explorer XLT V6 4WD

Question type: Maintenance & Repair

Hi, i have ford explorer 2006 4L XLT car and recently i noticed overheating
problem mainly on freeway with AC on. My mechanic changed the thermostat
and coolant but still i get the problem. I noticed the cooling fan turns on on
cold start and does not speed up when i turn the AC on, is this normal or how
does exactly this mechanism work?

3 Answers

58,815

Usually when a vehicle overheats at expressway speeds it's a coolant circulation problem, a collapsing lower radiator hose, or there's air trapped in the system. I'd suggest you flush out the cooling system with a chemical cleaner to get any rust and junk out of the cooling system. BUT be prepared for something to spring a leak. If you a weak spot in the radiator, water pump, heater core, etc. It may start leaking. HTH. -Jim

10

Thanks. However, the mechanic searched for a leak using pressure test and there were no leaks. I am concerned about the fan because I can not spin it freely when the engine shuts off. Also, the fan does not speed up when AC on max.

1 out of 1 people think this is helpful.
58,815

In a cooling system that's restricted by rust and junk you may not have a leak. But you will have poor heat exchange. The air-conditioning puts an added load on the cooling system which will exasperate the problem. When traveling at expressway speeds the fan(s) aren't even an issue. They're there for low speed and idling situations. If they're electric cooling fans you should be able to spin them by hand (with the engine off and COLD). If it's a clutch fan you may not be able to spin it by hand. HTH. -Jim

Best Answer

Your Answer

Add photo

Related Questions

  • Overheating problem ? 7 answers

    Hi my 2008 explorer is overheating if the rpm is over 2 it starts to overheat slightly ac working perfectly if I drive with low rpm no problems no leak in the radiator computer says no fan speed sig...

    2008 Ford Explorer XLT 4WD

    -

    Maintenance & Repair

  • Overheating 5 answers

    We were overheating replaced the radiator . When we got it back it started to stutter when idle and low speeds and overheated again. There is no water in oil no oil in water the resivory stays full ...

    2006 Ford Explorer XLT V6

    -

    Maintenance & Repair

  • What to do with overheating Ford Explorer? 4 answers

    I have a 2003 Explorer 4.0L that has recently been overheating. The problem is strange because it suddenly happened, I even don't look to the temperature gave when I heard a strange noise while drivi...

    2003 Ford Explorer XLT V6

    -

    Maintenance & Repair

  • Ford Explorer cooling fan issue 14 answers

    I have a 2006 Ford Explorer XLT which will frequently not kick into gear at low speeds and the cooling fan will run faster when gas pedal is pressed. If gas pedal pressed down hard for a couple sec...

    2006 Ford Explorer XLT V6 4WD

    -

    Maintenance & Repair

  • fan speed for heater/ac 3 answers

    Hello here is the problem, my heater and ac both work but only on high. when I try to turn the control to a lower setting the knob turns but the air/heat comes out high only. is there a way I can fi...

    2006 Ford Taurus SE

    -

    Maintenance & Repair

Explorer

Looking for a Used Explorer in your area?

CarGurus has 71,148 nationwide Explorer listings starting at $1,000.

ZIP:

Search Ford Explorer Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Ford Explorer Experts

#1 OJ
OJ
Reputation 9,050
#2 Tom Demyan
Tom Demyan
Reputation 3,620
#3 tennisshoes
tennisshoes
Reputation 2,020
View All

Related Models For Sale

Used Jeep Grand Cherokee
1,001 Great Deals out of 65,971 listings starting at $1,500
Used Ford Expedition
536 Great Deals out of 23,971 listings starting at $800
Used Chevrolet Tahoe
852 Great Deals out of 28,370 listings starting at $1,700
Used Ford F-150
3,217 Great Deals out of 205,088 listings starting at $1,779
Used Ford Edge
978 Great Deals out of 50,059 listings starting at $3,500
Used GMC Acadia
820 Great Deals out of 41,742 listings starting at $3,442
Used Dodge Durango
379 Great Deals out of 22,648 listings starting at $1,500
Used Ford Escape
1,420 Great Deals out of 83,998 listings starting at $1,400
Used Toyota Highlander
641 Great Deals out of 22,077 listings starting at $2,000
Used Toyota 4Runner
340 Great Deals out of 20,327 listings starting at $1,250
Used Honda Pilot
527 Great Deals out of 19,345 listings starting at $950
Used Nissan Pathfinder
504 Great Deals out of 24,528 listings starting at $1,795
Used GMC Yukon
563 Great Deals out of 16,645 listings starting at $2,500

Used Cars For Sale

2017 Ford Explorer For Sale
6 Great Deals out of 40,006 listings starting at $24,990
2016 Ford Explorer For Sale
209 Great Deals out of 7,265 listings starting at $21,950
2015 Ford Explorer For Sale
170 Great Deals out of 3,336 listings starting at $15,500
2014 Ford Explorer For Sale
302 Great Deals out of 5,758 listings starting at $10,995
2013 Ford Explorer For Sale
256 Great Deals out of 4,501 listings starting at $9,895