2000 F350 heater not working when in over drive

Asked by Jan 05, 2017 at 10:34 AM about the 2000 Ford F-350 Super Duty

Question type: Maintenance & Repair

Have replaced heater hose and thermostat. Heater
works fine when not in overdrive but no heat when I
shift into over drive

5 Answers

76,345

Coolant may be low or might be air in the cooling system. Was the air burped out after refilling? Was the heater set on hot when burping the system?

Not sure how to burp system. How do I do that?

76,345

With the radiator cap off, let the vehicle run so the thermostat opens. It may push fluid out the radiator but that is ok, that would be the air working its-way out. Have extra coolant to be able to pore back in once the level drops in the radiator. Do not rev up the engine or you will get a shower with the cap off. Have the heater temp set on high. Let the thermostat cycle a few times you can tell by watch the level in the radiator and by feeling the top radiator hose. It gets hot when the thermostat opens. Having the front end of the vehicle elevated helps.

1 of 1 people found this helpful.

Thanks - we'll give that a try and see if it solves the problem

76,345

Sounds good.

Your Answer

F-350 Super Duty

Looking for a Used F-350 Super Duty in your area?

CarGurus has 1,052 nationwide F-350 Super Duty listings starting at $5,500.

Postal Code:

Ford F-350 Super Duty Experts

  • #1
    Bigbob Reece
    Reputation
    2,860
  • #2
    tikun
    Reputation
    1,530
  • #3
    JoeAndJoe
    Reputation
    1,320
View All

Related Models For Sale

Used Ford F-250 Super Duty
27 Great Deals out of 700 listings starting at $2,475
Used Ford F-450 Super Duty
58 listings starting at $16,830
Used Ford F-150
657 Great Deals out of 9,867 listings starting at $2,995
Used Dodge Ram 3500
6 Great Deals out of 64 listings starting at $10,888
Used Chevrolet Silverado 2500HD
22 Great Deals out of 1,268 listings starting at $4,995
Used GMC Sierra 2500HD
23 Great Deals out of 1,331 listings starting at $3,990
Used Dodge Ram 2500
4 Great Deals out of 89 listings starting at $6,990
Used Chevrolet Silverado 1500
198 Great Deals out of 10,040 listings starting at $1,779
Used GMC Sierra 1500
245 Great Deals out of 10,352 listings starting at $1,775
Used Ford F-250
3 listings

Used Cars For Sale

2017 Ford F-350 Super Duty For Sale
4 Great Deals out of 576 listings starting at $36,985
2016 Ford F-350 Super Duty For Sale
11 Great Deals out of 114 listings starting at $32,999
2015 Ford F-350 Super Duty For Sale
6 Great Deals out of 79 listings starting at $30,990
2014 Ford F-350 Super Duty For Sale
29 listings starting at $29,900
2013 Ford F-350 Super Duty For Sale
3 Great Deals out of 23 listings starting at $21,880

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.