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Transfer Case not coming out of 4HI; Problems with the NV233
Topic Started: Dec 20 2008, 08:03 AM (273 Views)
Daver36
Advanced Member
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I've been having a little trouble lately with my NV233 transfer case. I gets into 4HI no problem but doesn't like to come out to easy ( I only shift as maximum allowable speed, usually much much slower, or in neutral all together). As of right now when I put the selector switch into 2WD the 4HI indicator LED stays on, and the 2WD indicator LED flashes (I'm assuming this means the selector switch has sent the signal, but the shift motor is not responding). I have had it in the past where, when putting it into 2wd, the selector switch indicator LED's show the transfer case to be into 2WD, but 2 or 3 miles down the road I get a big clunk, which I'm assuming is the transfer case actually going into 2WD. Also, I've had this problem once or twice before, but it seems to limit itself to the cold winter months. I was thinking at first that something could just be frozen, but it'll happen everyone in a while on long drives when everything should be a operationg temperatures. Could it me the mode sensor on the side of the transfer case on its way out? Another thing I noticed is every once in a while when I do a reverse donut in the snow in 4HI I smell a hint of transfer case oil (it's definately transfer case or transmission, not motor). I'm wondering if that is linked to the problem aswell, or if some oil just got out of the vent and onto the exhaust or something. Anyways, any input/help would be great.

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The Cook
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Techfo Guru
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Greetings and Merry Christmas SquadronPosted Image
Daver
Consulting the Haynes Manual Section 7 Pt C Transfer Case
2001 and later are equipped with either a NV233 part-time type or NV244 part time/full time TC. ;)
Transfer Case Control Module..........under the drivers side dash panel(I believe)
The electronically-controlled transfer cases have an electric shift motor on the case that makes shifts according to the input from the shift control switch on the instrument panel. [thumbs-up]
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Anway here is the way The Cook reads it..........the module controls the motor/ the TC case motor controls
the guts of the TC [LOL]

In terms of least $ to most$$$.start by checking the module....voltage across/input voltage/output voltage.
Then move on to the TC case motor.......connections/voltage/damage...and go from there.

Is your TC fluid crapped out/in that case :slap: :slap: 2 for you.
It never hurts to fresh out the fluid. ANYTHING SMELLING BURNT OFF THE DIPSTICK WHEN YOU CHECK FLUID
LEVELS gets you,
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Hope this starts you out on a little Google Quest
Regards and Good Luck
The Cook
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Abstrastic
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If it's in the way it will get run over!!!
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Check the T-case fluid. Trust me you don't want to have your T-case explode on you. I had it happen to my truck about 5-6 months ago. What a pain in the ass it is to remove and re-install the damn thing.
Evan.

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2002 Dodge Dakota QC 4x4--SOLD

2004 VW Jetta GLI ---SOLD
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