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

8,195

Blend door actuator may have failed

535

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

21,700

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.

8,195

Blend doors that year are electrically actuated

535

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

535

They both fail!

5,885

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 64,664 nationwide Explorer listings starting at $1,200.

ZIP:

Ford Explorer Experts

  • #1
    OJ
    Reputation
    11,600
  • #2
    Tom Demyan
    Reputation
    4,580
  • #3
    tennisshoes
    Reputation
    2,620
View All

Related Models For Sale

Used Ford Expedition
461 Great Deals out of 18,020 listings starting at $2,498
Used Jeep Grand Cherokee
930 Great Deals out of 67,551 listings starting at $950
Used Ford F-150
3,205 Great Deals out of 226,289 listings starting at $1,250
Used Chevrolet Tahoe
885 Great Deals out of 39,482 listings starting at $1,799
Used Dodge Durango
352 Great Deals out of 23,721 listings starting at $1,500
Used Toyota 4Runner
296 Great Deals out of 27,601 listings starting at $1,900
Used Nissan Pathfinder
490 Great Deals out of 23,857 listings starting at $895
Used GMC Yukon
565 Great Deals out of 18,728 listings starting at $2,000

Used Cars For Sale

2018 Ford Explorer For Sale
25,227 listings starting at $25,971
2017 Ford Explorer For Sale
166 Great Deals out of 13,569 listings starting at $21,695
2016 Ford Explorer For Sale
163 Great Deals out of 3,876 listings starting at $14,995
2015 Ford Explorer For Sale
367 Great Deals out of 7,297 listings starting at $11,799
2014 Ford Explorer For Sale
232 Great Deals out of 4,129 listings starting at $8,950

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.