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

12,335

Blend door actuator may have failed

975

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

42,750

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.

12,335

Blend doors that year are electrically actuated

975

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

975

They both fail!

10,065

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 2,029 nationwide Explorer listings starting at $3,000.

Postal Code:

Ford Explorer Experts

  • #1
    OJ
    Reputation
    19,840
  • #2
    TransAm77
    Reputation
    4,870
  • #3
    tennisshoes
    Reputation
    4,510
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Ford Expedition
7 Great Deals out of 542 listings starting at $5,500
Used Ford F-150
195 Great Deals out of 14,798 listings starting at $2,000
Used Jeep Grand Cherokee
81 Great Deals out of 4,534 listings starting at $2,699
Used Chevrolet Tahoe
13 Great Deals out of 914 listings starting at $6,871
Used Dodge Durango
27 Great Deals out of 1,000 listings starting at $8,900
Used Toyota 4Runner
21 Great Deals out of 853 listings starting at $5,999
Used GMC Yukon
13 Great Deals out of 1,115 listings starting at $2,000
Used Nissan Pathfinder
34 Great Deals out of 1,297 listings starting at $2,553
Used Chevrolet Silverado 1500
108 Great Deals out of 13,364 listings starting at $2,800

Used Cars for Sale

2020 Ford Explorer For Sale
537 listings starting at $48,598
2019 Ford Explorer For Sale
7 Great Deals out of 387 listings starting at $3,000
2018 Ford Explorer For Sale
8 Great Deals out of 157 listings starting at $29,988
2017 Ford Explorer For Sale
8 Great Deals out of 283 listings starting at $23,600
2016 Ford Explorer For Sale
4 Great Deals out of 192 listings starting at $16,999

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.