After replacing just about everything it could b y is it still running hot

Asked by Jul 11, 2017 at 11:55 AM about the 2004 Ford Explorer XLT V6

Question type: Maintenance & Repair

We have a new hose ,thermostat,water
pump, radiator, and clutch fan...and had
AC on and it was starting to over heat and
the clutch fan was just put on yesterday!
Thermostat and hose was replaced last
week wen it overheated and blew hose off
into fan on interstate...y is it still trying to
overheat wen AC is on ?

2 Answers

10

Could be bad head gasket. Clogged coolant port in head. They are known for coolant leaks through the plastic two piece thermostat housing which drips some times unnoticed (other than a sweet smell) onto motor and runs low on coolant which causes motor to over heat than the head/s warp. I've pulled heads off that were caked with white stuff inside. Sometime people put in fix a leak sealers trying to fix leaks which clog up coolant systems. Every explorer I ever had developed a coolant leak from thermostat housing which has to be addressed before overheating..

12,490

Are you certain that when coolant was put in all the pockets of air were displaced in the system? Many times coolant is poured in to the radiator until it overflows then the cap is put back on thinking the system is full but when the engine begins to run the coolant" displaces the voids and on rechecking you may find that your system is no where near being full. Another important item is the radiator cap ,, the radiator caps purpose is to prevent coolant from becoming steam (you can't cool anything with a gas) It uses the basic laws of physics that say's water can't boil under pressure (power plants keep water from boiling up to 1000 degrees) ... My point is make sure your caps is not only good but is sealing the pressure. Are you certain the cooling fan is working? A faulty sensor may keep the engine fan from coming on

Your Answer:

Ford Explorer Experts

  • #1
    OJ
    Reputation
    12,480
  • #2
    Tom Demyan
    Reputation
    4,980
  • #3
    tennisshoes
    Reputation
    2,760
View All

Related Models For Sale

Used Ford Expedition
395 Great Deals out of 22,358 listings starting at $1,000
Used Jeep Grand Cherokee
874 Great Deals out of 76,615 listings starting at $900
Used Ford F-150
2,300 Great Deals out of 208,486 listings starting at $1,300
Used Chevrolet Tahoe
522 Great Deals out of 37,993 listings starting at $1,243
Used Toyota Highlander
389 Great Deals out of 51,407 listings starting at $2,000
Used Dodge Durango
289 Great Deals out of 25,709 listings starting at $1,750
Used Ford Escape
999 Great Deals out of 111,788 listings starting at $1,000
Used Toyota 4Runner
268 Great Deals out of 34,349 listings starting at $1,995
Used Honda Pilot
374 Great Deals out of 44,331 listings starting at $1,900
Used Nissan Pathfinder
286 Great Deals out of 24,031 listings starting at $1,995
Used GMC Yukon
334 Great Deals out of 21,444 listings starting at $2,450
Used Ford Explorer Sport
132 listings starting at $1,900

Used Cars For Sale

2018 Ford Explorer For Sale
7 Great Deals out of 38,706 listings starting at $22,572
2017 Ford Explorer For Sale
162 Great Deals out of 5,914 listings starting at $17,908
2016 Ford Explorer For Sale
173 Great Deals out of 4,243 listings starting at $14,870
2015 Ford Explorer For Sale
239 Great Deals out of 7,018 listings starting at $9,500
2014 Ford Explorer For Sale
97 Great Deals out of 2,833 listings starting at $8,800

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.