Why does the air conditioner work in my 1998 Ford Explorer but not the heater. No heat comes out at all when heat is turned on.

Asked by May 31, 2015 at 08:31 PM about the 1998 Ford Explorer 4 Dr XL SUV

Question type: Maintenance & Repair

No heat whatsoever emits from vent when the heat is turned on but air conditioner works
fine. Please help me get answers.

7 Answers

7,965

Blend door actuator may have failed

525

That's a very good call Camaro collector, flush heater core / refill / and retest, also check heater control valve for opening and closing under hood on heater hoses passenger side close to firewall, make sure it switches when vacuum is applied

20,800

There is probably a vacuum canister somewhere, probably under the hood, which maintains vacuum when accelerating. There is usually a valve on it which can go bad resulting in the problem you are having.

7,965

Blend doors that year are electrically actuated

525

The heater control valve has a vacuum diaphragm to open water passage to the heater- core

525

They both fail!

5,625

Just for information; he wanted to know why A/C worked and not heat. It is like apples and oranges... two separate, individual systems and not connected except for the dash controls. You can't take 1/2 of an apple and orange and join them... doesn't work

Your Answer

Explorer

Looking for a Used Explorer in your area?

CarGurus has 70,938 nationwide Explorer listings starting at $1,500.

ZIP:

Ford Explorer Experts

  • #1
    OJ
    Reputation
    11,210
  • #2
    Tom Demyan
    Reputation
    4,430
  • #3
    tennisshoes
    Reputation
    2,590
View All

Related Models For Sale

Used Ford Expedition
353 Great Deals out of 17,241 listings starting at $1,930
Used Jeep Grand Cherokee
977 Great Deals out of 72,395 listings starting at $1,200
Used Ford F-150
2,846 Great Deals out of 212,987 listings starting at $1,295
Used Chevrolet Tahoe
792 Great Deals out of 42,149 listings starting at $1,980
Used Dodge Durango
299 Great Deals out of 23,956 listings starting at $1,999
Used Toyota 4Runner
316 Great Deals out of 25,379 listings starting at $1,750
Used Nissan Pathfinder
437 Great Deals out of 26,573 listings starting at $2,300
Used GMC Yukon
614 Great Deals out of 22,461 listings starting at $2,500

Used Cars For Sale

2018 Ford Explorer For Sale
4,657 listings starting at $21,986
2017 Ford Explorer For Sale
141 Great Deals out of 39,410 listings starting at $22,500
2016 Ford Explorer For Sale
134 Great Deals out of 4,062 listings starting at $14,980
2015 Ford Explorer For Sale
343 Great Deals out of 7,352 listings starting at $11,499
2014 Ford Explorer For Sale
211 Great Deals out of 4,700 listings starting at $9,650

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.