Overheating

Asked by Sep 22, 2017 at 04:27 PM about the 2003 Ford F-150

Question type: Maintenance & Repair

Randomly my truck been Building to much
pressure in the coolant and then it overheats

5 Answers

29,150

How do you know it is building up too much pressure? What is the condition of the coolant? Is it rusty or have oil in it? Is it circulating through the engine? Is the heater working when placed on HOT and fan on?

It would run for two or three hours and then the cap would release pressure and then it over heats. The coolant is new, the fan runs, thare no bubbles in the line and the heater works fine

29,150

If the fan is operated via a belt, make sure the fan clutch is not shot preventing proper circulation of air. If electric and has two fans make sure both are working. The three hour portion confuses me. If a serious cooling component failure is occurring it should not take two to three hours to overheat.

The fan is clutched and its runs all the time and I made shur that thare no blockages in the air flow. I ran it on a reader and it siad that the overheat protection was active

29,150

Are you getting a light on the dash indicating overheat? Was the code something like 1299, cylinder head temp sensor indicating an overheat condition, Is your truck equipped with "limp mode"? If so, is it going into limp mode? If you are positive it is overheating and not getting an idiot light or temp gauge increasing, try changing the CHT sensor and check for electrical issues at the connection point of connection, making sure ground is good. As I stated before the two to three hour constant driving fact is an issue. If there was an bad issue in the cooling system it would not take two to three hours to show itself even if left at idle. Since the thermostat is a spring operated mechanical device, you can try replacing it, they are not expensive. Also note engines, even as old as yours, will overheat quickly if water is just added to the system. If you are not running a 50/50 mix you could have that problem.

Your Answer:

F-150

Looking for a Used F-150 in your area?

CarGurus has 9,805 nationwide F-150 listings starting at $2,995.

Postal Code:

Ford F-150 Experts

  • #1
    OJ
    Reputation
    14,200
  • #2
    dandyoun
    Reputation
    5,590
  • #3
    tennisshoes
    Reputation
    4,860
View All

Related Models For Sale

Used Chevrolet Silverado 1500
85 Great Deals out of 9,020 listings starting at $2,950
Used GMC Sierra 1500
71 Great Deals out of 8,600 listings starting at $4,500
Used Ford F-250 Super Duty
16 Great Deals out of 866 listings starting at $3,995
Used Toyota Tundra
37 Great Deals out of 1,679 listings starting at $6,900
Used Dodge Ram 1500
14 Great Deals out of 430 listings starting at $5,100
Used Toyota Tacoma
33 Great Deals out of 1,821 listings starting at $5,995
Used Ford Mustang
38 Great Deals out of 1,566 listings starting at $2,910
Used Ford Ranger
9 Great Deals out of 385 listings starting at $1,450
Used Nissan Titan
30 Great Deals out of 1,058 listings starting at $5,500
Used Chevrolet Colorado
18 Great Deals out of 2,818 listings starting at $2,995
Used Ford Explorer
41 Great Deals out of 2,680 listings starting at $5,900
Used Ford F-350 Super Duty
17 Great Deals out of 1,042 listings starting at $8,900
Used Chevrolet Tahoe
16 Great Deals out of 1,214 listings starting at $9,871

Used Cars for Sale

2019 Ford F-150 For Sale
939 listings starting at $32,144
2018 Ford F-150 For Sale
18 Great Deals out of 4,745 listings starting at $24,870
2017 Ford F-150 For Sale
30 Great Deals out of 485 listings starting at $21,900
2016 Ford F-150 For Sale
35 Great Deals out of 1,147 listings starting at $19,995
2015 Ford F-150 For Sale
25 Great Deals out of 503 listings starting at $16,988

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. Content will be removed if CarGurus becomes aware that it violates our policies.