2008 Explorer XLT - A/C air swaps to defrost when under strain

Asked by Oct 21, 2009 at 09:23 PM about the 2008 Ford Explorer XLT

Question type: Maintenance & Repair

My '08 Explorer has 60k miles on it. When driving under normal conditions with
the A/C on, the air blows normally from the console vents. When there are high
RPMs (such as climbing a hill or prolonged accelerating)the air swaps from the
front vents to the defrost vents. One repair shop claimed they repaired it
when they replaced a leaking vacuum hose, but it still occurs (though not as
often). There is no Haynes Repair Manual for the '08 model. I also cannot find
evidence the late model Explorers have a vacuum pump.

Any ideas on what I should look for? I can't find a schematic for the engine
(not in the owner's manual) so I'm pretty much at a loss.

4 Answers

11,845

I am assuming this is a 4.0 engine. What the manufacturer made to help elliviate this problem is a vacuum tank to hold vacuum under load conditons. Check to make sure all OTHER vaccum lines are conected properly and that they are not damaged going to this vacuum tank and that the vacuum tank did not get damaged by some previous "other" servicing. Good Luck

8 of 8 people found this helpful.
35

There should also be a one way valve on the vacuum line to the system, sometimes these stuff up and when under load, the vacuum drops and thus drops the vacuum in the aircon system too

3 of 3 people found this helpful.
11,845

John has a point - I do not think an 08 would be blocked but perhaps the previous repair shop removed it when it broke and did not reinstall one just 'teed' it all together ... I like this thought thanks John

I had a shop pull the reservoir off and test it. It held pressure without any leaks. An idea the shop had (and an expensive one) would be to pull the dash off and inspect for the problem that way. Any suggestions?

Your Answer

Add photo

Related Questions

Explorer

Looking for a Used Explorer in your area?

CarGurus has 72,518 nationwide Explorer listings starting at $1,000.

ZIP:

Search Ford Explorer Questions

Ford Explorer Experts

#1 OJ
OJ
Reputation 10,070
#2 Tom Demyan
Tom Demyan
Reputation 4,110
#3 tennisshoes
tennisshoes
Reputation 2,350
View All

Related Models For Sale

Used Jeep Grand Cherokee
1,026 Great Deals out of 74,887 listings starting at $750
Used Ford Expedition
473 Great Deals out of 24,887 listings starting at $700
Used Chevrolet Tahoe
549 Great Deals out of 29,234 listings starting at $1,699
Used Ford F-150
2,195 Great Deals out of 206,316 listings starting at $1,499
Used GMC Acadia
484 Great Deals out of 48,117 listings starting at $3,995
Used Ford Edge
701 Great Deals out of 50,637 listings starting at $1,500
Used Dodge Durango
273 Great Deals out of 22,704 listings starting at $1,200
Used Toyota Highlander
345 Great Deals out of 24,768 listings starting at $2,499
Used Ford Escape
1,394 Great Deals out of 93,563 listings starting at $1,250
Used Toyota 4Runner
252 Great Deals out of 20,494 listings starting at $1,800
Used Honda Pilot
379 Great Deals out of 21,194 listings starting at $1,500
Used Nissan Pathfinder
266 Great Deals out of 22,736 listings starting at $1,995
Used Chevrolet Traverse
551 Great Deals out of 51,308 listings starting at $5,500
Used GMC Yukon
377 Great Deals out of 18,226 listings starting at $2,950

Used Cars For Sale

2017 Ford Explorer XLT For Sale
10,854 listings starting at $24,136
2016 Ford Explorer XLT For Sale
14 Great Deals out of 511 listings starting at $21,840
2015 Ford Explorer XLT For Sale
45 Great Deals out of 1,051 listings starting at $16,995
2014 Ford Explorer XLT For Sale
53 Great Deals out of 1,454 listings starting at $13,500
2013 Ford Explorer XLT For Sale
35 Great Deals out of 670 listings starting at $11,250

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.