2003 mercury mountaineer. Vehicle won't shut off when the hvac unit is on. Can remove key from vehicle and will stay running. Vehicle will shut off when I press the off button on the hvac unit.

Asked by Aug 19, 2014 at 06:18 PM about the 2003 Mercury Mountaineer 4 Dr STD SUV

Question type: Maintenance & Repair

3 Answers

23,165

Was this a police vehicle? Does it have "safe idle" (an aftermarket device) installed?

No it wasnt. Found out after alot of testing and troubleshooting that the hvac control unit was back feeding causing the ecm and ignition not to shut down.

23,165

Sounds like a nightmare.

Your Answer

Add photo

Related Questions

Mountaineer

Looking for a Used Mountaineer in your area?

CarGurus has 1,112 nationwide Mountaineer listings starting at $1,000.

ZIP:

Search Mercury Mountaineer Questions

Mercury Mountaineer Experts

#1 Tom Demyan
Tom Demyan
Reputation 540
#2 kbro
kbro
Reputation 460
#3 FordNut
FordNut
Reputation 310
View All

Related Models For Sale

Used Ford Explorer
722 Great Deals out of 74,484 listings starting at $750
Used Ford Expedition
384 Great Deals out of 24,285 listings starting at $1,951
Used Lincoln Navigator
85 Great Deals out of 5,512 listings starting at $3,485
Used Jeep Grand Cherokee
817 Great Deals out of 69,765 listings starting at $995
Used Ford F-150
2,428 Great Deals out of 210,086 listings starting at $895
Used Ford Escape
1,026 Great Deals out of 92,795 listings starting at $1,500
Used Chevrolet Tahoe
604 Great Deals out of 27,653 listings starting at $600
Used Dodge Durango
233 Great Deals out of 22,748 listings starting at $1,499
Used Toyota 4Runner
276 Great Deals out of 20,408 listings starting at $2,700
Used Lincoln Aviator
4 Great Deals out of 220 listings starting at $2,495
Used Honda Pilot
350 Great Deals out of 20,190 listings starting at $2,199
Used GMC Envoy
53 Great Deals out of 2,034 listings starting at $1,999
Used Acura MDX
224 Great Deals out of 17,417 listings starting at $2,299

Used Cars For Sale

2010 Mercury Mountaineer For Sale
3 Great Deals out of 75 listings starting at $5,915
2009 Mercury Mountaineer For Sale
18 listings starting at $5,995
2008 Mercury Mountaineer For Sale
5 Great Deals out of 133 listings starting at $4,995
2007 Mercury Mountaineer For Sale
4 Great Deals out of 165 listings starting at $3,870
2006 Mercury Mountaineer For Sale
163 listings starting at $1,900