When the rear air conditioner is on, when I first start the vehilce there is a popping noise in the back, on the passenger side

Asked by Dec 15, 2015 at 05:10 PM about the 2007 Lincoln Navigator Ultimate 4X4

Question type: Maintenance & Repair

I think it is some kind of regulator having to do with the rear air, but not sure!

2 Answers


The rear AC and heater is located in the back. The popping noise is probably a blend door shutting or opening. My Expedition is having a similar issue and I am going to check it out pretty soon.

2 of 2 people found this helpful.

Yup, temp blend door motor or function door motor. They ar right nest to each other just behind the c pillar. if you remove the rear cupholder there and the flat area below the 3rd window yo will see them both. When first turned on and clicking adjust the temp knob from hot to cold and back a couple of times and listen for any change. Then adjust the floor ceiling selector and listen for any change. whichever one changes its tone or quits clacking is your culprit.

1 of 1 people found this helpful.

Your Answer

Lincoln Navigator Experts

  • #1
  • #2
  • #3
View All

Related Models For Sale

Used Ford Expedition
375 Great Deals out of 19,209 listings starting at $1,295
Used Cadillac Escalade
227 Great Deals out of 11,182 listings starting at $2,000
Used Chevrolet Tahoe
676 Great Deals out of 39,507 listings starting at $1,000
Used GMC Yukon
399 Great Deals out of 21,420 listings starting at $1,495
Used Chevrolet Suburban
349 Great Deals out of 21,837 listings starting at $1,999
Used Cadillac Escalade ESV
89 Great Deals out of 5,280 listings starting at $3,990
Used GMC Yukon XL
246 Great Deals out of 13,687 listings starting at $1,495
Used Ford Explorer
825 Great Deals out of 63,417 listings starting at $1,000
Used Ford F-150
2,295 Great Deals out of 183,540 listings starting at $699
Used Nissan Armada
148 Great Deals out of 7,827 listings starting at $2,995
43 Great Deals out of 1,400 listings starting at $5,095
Used Lincoln MKX
181 Great Deals out of 11,465 listings starting at $4,250
Used Dodge Durango
268 Great Deals out of 21,364 listings starting at $2,495
Used Toyota Sequoia
125 Great Deals out of 5,330 listings starting at $2,499

Used Cars For Sale

2018 Lincoln Navigator For Sale
2 listings starting at $85,810
2017 Lincoln Navigator For Sale
4 Great Deals out of 2,147 listings starting at $42,932
2016 Lincoln Navigator For Sale
312 listings starting at $36,991
2015 Lincoln Navigator For Sale
3 Great Deals out of 231 listings starting at $23,591
2014 Lincoln Navigator For Sale
11 Great Deals out of 191 listings starting at $19,950

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.