Join Date: Jan 2013
Location: Bend, OR
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Originally Posted by DeepSpringFarm
Ok, I have a 2004 excursion. I thought that maybe the 4X4 wasn't working but didn't get to test it until this snow we recently got here. I was trying to get it to engage, but nothing seemed to happen. The hubs are a bit sticky, and i wasn't able to turn it to manual lock, but was going to play with that tomorrow.
I did notice that when i tried to put it into 4x4 i noticed the defrost turned on and thought that was weird. What is up with that?
Does anybody have any suggestions?
When the defrost turns on after switching to 4x4 it's usually a sign of a vacuum leak...the 4x4 vacuum solenoid on the passenger side fender near the battery will usually be the cause of the problem...but check the easy stuff first, the vacuum lines between the frame rail and hubs can get rubbed through causing a vacuum leak. You can buy a new 4x4 solenoid at the dealer for around $80. Good luck.
'05 Excursion Limited, 6.0L - 175k miles, X/modified-B code springs, ARP head studs, SCT Tuner, Edge CTS, EGR deleted, 4" exhaust, Sinister Diesel coolant filter, Buckstop Outback bumper, PIAA LEDs
'02 Excursion Limited, 7.3L - 223k miles (RIP - totaled on ice, 1/1/15)