4wd is f'ed up

cowboycowboy91 · Aug 13, 2016

I am almost to the point on flipping a match in this truck to watch it burn. I have a 2000 ranger 4wd. The 4wd quit working. The 4 high and 4 low lights were just blinking on and off. So, I had a 4wd module off of another truck that I put in it to see if it fixed it. I moved the switch to 4 lo and it engaged fine. Then I went to put it back in 2 high and the damn thing is stuck in 4 lo. I have tried removing the battery cable to clear it,. I switched the modules back over. I changed the switch. I removed half the dash and climbed under, inside, left, right, and sideways to inspect wire after wire for a bad spot. I climbed under the truck and checked the wiring harness going into the transfer case motor. I have did everything but burn the POS and stand back and laugh! As you can tell, I am a little pissed off at this thing right now. It has given me more damn problems than a woman....no offense women. lol. Any ideas on what to do to fix it? I cannot drive it in 4 lo and it's my daily driver. I need to get in back in 2 high before Monday. Any ideas?

cowboycowboy91 · Aug 13, 2016

Forgot to mention

I forgot to say that I have tried it in every gear. I figured I better mention this before someone mentions that it has to be in nuetral or something. I know it has to be in nuetral to go into 4 lo and I have tried to disengage it while in nuetral, park, and driving it around going 20 mph.

wildbill23c · Aug 13, 2016

When you shifted back into 2WD, did you just flip the switch to 2WD, or did you pause in 4Hi then go back to 2WD? I've heard of some 4WD systems being quite picky on the way you shift back into 2WD, sometimes you gotta pause in 4HI then back to 2WD.

black_demon69 · Aug 13, 2016

Pull shift motor off and shift it by hand

cowboycowboy91 · Aug 13, 2016

I just tried pausing in 4 high and went to 2wd...it worked this time! However, now it will not go back to 4 lo, but I am happy that it is back to 2wd. I don't know if it was just luck or the switch is really that tricky, because it didn't used to be that way. I could just flip it however and it always went right in. Also, now since 4 lo is not working, it makes me think I still have a problem somewhere, but I ain't touching it now! lol. Thanks for the advice.

cowboycowboy91 · Aug 13, 2016

Ok, the 4high and 4lo lights just started flashing again...I didn't touch anything. It is still in 2wd, but the 4wd is just out of order I guess. Anyways, I'll just drive it in 2wd for now and hope I don't need 4wd. Thanks again guys.

pjtoledo · Aug 13, 2016

cowboycowboy91 said:
I am almost to the point on flipping a match in this truck to watch it burn. I have a 2000 ranger 4wd. The 4wd quit working. The 4 high and 4 low lights were just blinking on and off. So, I had a 4wd module off of another truck that I put in it to see if it fixed it. I moved the switch to 4 lo and it engaged fine. Then I went to put it back in 2 high and the damn thing is stuck in 4 lo. I have tried removing the battery cable to clear it,. I switched the modules back over. I changed the switch. I removed half the dash and climbed under, inside, left, right, and sideways to inspect wire after wire for a bad spot. I climbed under the truck and checked the wiring harness going into the transfer case motor. I have did everything but burn the POS and stand back and laugh! As you can tell, I am a little pissed off at this thing right now. It has given me more damn problems than a woman....no offense women. lol. Any ideas on what to do to fix it? I cannot drive it in 4 lo and it's my daily driver. I need to get in back in 2 high before Monday. Any ideas?

having been married for 42 years, I see nothing offensive in that statement :icon_rofl:

Ranger4x4.0 · Aug 14, 2016

Im very careful when i use my 4lo. I NEVER turn the truck off in 4lo. And i always switch it to 4hi and drive a few feet to make sure it disengaged and then to 2wd. It may be weird on how i do it but these things, as said above, are picky when it comes yo 4wd. 190,000 miles and not a single problem with 4wd.

Sent from my SAMSUNG S6 using Crapatalk

aspevacek · Aug 14, 2016

Swap out the shift motor or at least pull yours and clean up the contacts inside. Cleaning the contacts may or may not have help but I am almost positive swapping the shift motor will correct the issue.

Doofy · Aug 14, 2016

Pulse/Vacuum hubs do get the beat down on these forums. Personally, I've seldom had any problems. Blew a fuse once. Once in -55 degree weather they failed to engage until the oil warmed up a little. Yes, manual transfer cases are more bullet proof and are less irritating and infuriating but not everyone has the ability to change them out.

I am sure I will be pissed if or when my vacuum hubs crap out but they have done well for 18 years.

wildbill23c · Aug 14, 2016

This is why the manual hubs and manual t-case are a much better and more simple option LOL. Throw some electronics and electrical into the mix and problems arise.

I think it may also depend on how often you use the 4WD, things become sticky if it just sets in 2WD all the time. I don't use the 4WD in my truck often but I put it in once or twice during the summer to keep things working properly...this includes a short 4Lo engagement and drive as well.

4wd is f'ed up

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