where is the ac vacuum check valve for a 1996 explorer located?

Asked by Jun 14, 2017 at 05:47 PM about the 1996 Ford Explorer 4 Dr XLT 4WD SUV

Question type: Maintenance & Repair

need to replace check valve...ac blowing through defrost vent...

3 Answers


Sounds like a bad HVAC Actuator under the dash if all you have is defrost.

ac woks fine but only when speeding up the air would divert to the defrost vents...then goes back to normal after maybe 30 seconds, sometimes up to a minute...


Well then the check valve is a possibility, sounds more like a small vacuum leak somewhere since you know everything does work. Should inspect all vacuum lines on the engine. There is a separate HVAC Defrost Mode Door Actuator that works off of vacuum from the engine. Inspect the vacuum line running to it, if there is a check valve in that line, and it is bad, it could cause this problem since it only allows vacuum to flow in one direction. The reservoir for air pressure would be the Actuator itself, keeping it in the proper position as you accelerate.

1 of 1 people found this helpful.

Your Answer


Looking for a Used Explorer in your area?

CarGurus has 1,629 nationwide Explorer listings starting at $4,500.

Postal Code:

Ford Explorer Experts

  • #1
  • #2
    Tom Demyan
  • #3
View All

Related Models For Sale

Used Ford Expedition
10 Great Deals out of 353 listings starting at $5,490
Used Jeep Grand Cherokee
150 Great Deals out of 4,034 listings starting at $2,400
Used Chevrolet Tahoe
5 Great Deals out of 912 listings starting at $9,871
Used Ford F-150
536 Great Deals out of 9,929 listings starting at $3,490
Used Toyota 4Runner
5 Great Deals out of 526 listings starting at $3,995
Used Nissan Pathfinder
12 Great Deals out of 1,371 listings starting at $3,888
Used GMC Yukon
3 Great Deals out of 1,106 listings starting at $6,950

Used Cars For Sale

2018 Ford Explorer For Sale
573 listings starting at $36,889
2017 Ford Explorer For Sale
16 Great Deals out of 351 listings starting at $28,900
2016 Ford Explorer For Sale
8 Great Deals out of 154 listings starting at $21,999
2015 Ford Explorer For Sale
9 Great Deals out of 154 listings starting at $9,928
2014 Ford Explorer For Sale
3 Great Deals out of 126 listings starting at $10,000

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.