2002 Ford Explorer 4WD Engages When Cold

2002 ALL OTHER MAKES ALL OTHER MODELS
Avatar
SKYCOWBOY
  • MEMBER
  • 2 POSTS
I have a 2002 explorer w/auto 4x4 with 45,500 miles on it.. Everytime it gets cold..lets say below 30 degrees, the four wheel drive engages. The 4x4 High and low lights flash, and also feel binding. I already had the actuator motor replaced on the transfer case. Again, only happens when its cold. Is there a sensor that that engages the four wheel drive when its needed?
Feb 26, 2006 at 12:14 PM
Advertisement
Avatar
LOVESCARS
  • ✓Experienced Mechanic
  • 359 POSTS
THE BLINKING MEANS IT'S NOT CATCHING HIGH OR LOW i WOULD SUGGEST TRYING HIGH ONLY FIRST.
THESE SETUPS ARE TEMPERATURE SENSITIVE
Feb 27, 2006 at 12:40 PM
Avatar
SKYCOWBOY
  • MEMBER
  • 2 POSTS
[quote:49d5ae097d="Pud"]THE BLINKING MEANS IT'S NOT CATCHING HIGH OR LOW i WOULD SUGGEST TRYING HIGH ONLY FIRST.
THESE SETUPS ARE TEMPERATURE SENSITIVE[/quote:49d5ae097d] Maybe you misunderstood me...the 4 wheel drive is kicking in automatically, or its trying to...you hear the binding in the drive train like your driving on dry pavement...Only happens when its cold out, when vehicle sits over night. What do you think it can be? Like I said the the actuator was replaced already.

Thanks
Feb 28, 2006 at 10:18 AM
Avatar
LOVESCARS
  • ✓Experienced Mechanic
  • 359 POSTS
Yes I did misunderstand you! I would suspect the switch?
I have experienced, like I said, the 4x4 will not engage or takes a little longer in cold weather. This causes the lights on the dash to flash (4H-4L).
Feb 28, 2006 at 10:39 AM
Avatar
LOVESCARS
  • ✓Experienced Mechanic
  • 359 POSTS
I wanted to mention also that the system also has a gem unit that controls or per say is in line with the switch. Depending on the year I can't tell you specifically if your vehicle is equipped I believe you would find it inside the instrument panel.
You may want to have that checked!
Feb 28, 2006 at 10:58 AM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.

Suggested Repair

Have the 4x4 mode switch and the GEM module checked. Flashing 4H and 4L lights indicate the system is not completing high or low engagement, and these systems can be temperature sensitive. The transfer case actuator has already been replaced, so check the switch and the GEM, which is typically inside the instrument panel.

Conversation Summary

The owner of a 2002 Explorer with automatic 4x4 says the system engages or tries to engage below about 30 degrees, especially after sitting overnight. The 4x4 high and low lights flash and the drivetrain binds. The transfer case actuator motor was already replaced. The expert explained that flashing lights mean engagement is not completing and that these systems are temperature sensitive, then suspected the mode switch and recommended also checking the GEM module that works with the switch.

Related Repair Questions

Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle