2003 mountaineer check engine light is on had it scanned and it says system voltage too high. when you start it up it has a misfire of sort. put it in drive it spudders then drives out fine help?????

Asked by Jun 06, 2014 at 10:32 PM about the 2003 Mercury Mountaineer 4 Dr STD AWD SUV

Question type: Maintenance & Repair

Also does anyone know what a
chatter might be in the front end at
low rpm?????

4 Answers

86,615

If it says system voltage you better get it fixed or it could really cost you, over voltage can fry all of the electronics in your vehicle, don't delay.

Im sorry system voltage bank one too high i was told it was a faulty O2 sensor or harness could that make my rough start out drive?

86,615

OK yep that can do it, double check the wiring if no problem is found with the wiring then replace the sensor, don't forget to erase the code after your done so the ECM can read the new sensor.

Will update soon thanks for the help

Your Answer

Add photo

Related Questions

  • Please Help..just bought '03 Mountaineer 7 answers

    I just bought a 2003 Mountain with 107K miles on it (4.6L V8, AWD) last weekend. 1/2 way home (about a 3 hour drive) I backed out of a parking spot and it felt like my E-brake was stuck on. Shook and ...

    2003 Mercury Mountaineer 4 Dr STD AWD SUV

    -

    Maintenance & Repair

  • 2003 Mercury Mountaineer clunking sound from the front 4 answers

    I have a 2003 Mercury Mountaineer that is making a loud clunking sound when I back out of places. I recently took it to get an estimate & was told that it was the axle, when I took it back in for the ...

    2003 Mercury Mountaineer 4 Dr STD AWD SUV

    -

    Maintenance & Repair

  • 2004 Mercury Mountainer STD AWD V8 1 answer

    I have a 2004 Mercury Mountaineer AWD V8. When idling, the car sounds like it has a knot in the motor. I took it to AutuZone and they said there's a cylinder 6 misfire. When driving on the highway,...

    2004 Mercury Mountaineer 4 Dr STD AWD SUV

    -

    Maintenance & Repair

  • What does the ABS light mean? 5 answers

    2003 Mercury Mountaineer 4 Dr STD AWD SUV

    -

    Maintenance & Repair

  • can i remove the front drive shaft out of my mountaineer 3 answers

    i took the front drive shaft out of my mountaineer and it ran good for a few days and now its slipping and the over drive light flashes

    1999 Mercury Mountaineer 4 Dr STD AWD SUV

    -

    Maintenance & Repair

Mountaineer

Looking for a Used Mountaineer in your area?

CarGurus has 1,478 nationwide Mountaineer listings starting at $150.

ZIP:

Search Mercury Mountaineer Questions

Mercury Mountaineer Experts

#1 Tom Demyan
Tom Demyan
Reputation 510
#2 kbro
kbro
Reputation 460
#3 FordNut
FordNut
Reputation 310
View All

Related Models For Sale

Used Ford Explorer
940 Great Deals out of 73,742 listings starting at $750
Used Ford Expedition
413 Great Deals out of 24,690 listings starting at $1,999
Used Lincoln Navigator
116 Great Deals out of 5,616 listings starting at $1,299
Used Jeep Grand Cherokee
840 Great Deals out of 68,654 listings starting at $864
Used Chevrolet Tahoe
775 Great Deals out of 28,432 listings starting at $1,500
Used Ford Escape
1,113 Great Deals out of 90,502 listings starting at $1,295
Used Dodge Durango
299 Great Deals out of 24,118 listings starting at $1,500
Used GMC Envoy
49 Great Deals out of 2,388 listings starting at $1,800
Used Honda Pilot
461 Great Deals out of 19,628 listings starting at $599
Used GMC Yukon
517 Great Deals out of 17,114 listings starting at $1,799
Used Ford F-150
2,691 Great Deals out of 211,555 listings starting at $1,000
Used Cadillac Escalade
308 Great Deals out of 10,695 listings starting at $1,900
Used Nissan Pathfinder
413 Great Deals out of 24,808 listings starting at $999
Used Toyota 4Runner
319 Great Deals out of 20,540 listings starting at $2,295

Used Cars For Sale

2010 Mercury Mountaineer For Sale
5 Great Deals out of 91 listings starting at $7,995
2009 Mercury Mountaineer For Sale
28 listings starting at $5,990
2008 Mercury Mountaineer For Sale
3 Great Deals out of 142 listings starting at $4,495
2007 Mercury Mountaineer For Sale
5 Great Deals out of 179 listings starting at $4,599
2006 Mercury Mountaineer For Sale
7 Great Deals out of 219 listings starting at $1,974