Help with front axel shift motor! -
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Unread 04-02-2002, 08:13 PM   #1
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Help with front axel shift motor!

I dont seem to be getting any indicator lights when I shift into 4X? Is this telling me that My shift motor is not working?
What is the most common problem with thefront axel shift motors? Can I bypass the S-motor ?
any help wood be great!!

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Unread 04-03-2002, 06:54 AM   #2
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</font><blockquote><font size="1" face="Verdana, Arial">quote:</font><hr /><font size="2" face="Verdana, Arial">Originally posted by highonthai:
<strong>Can I bypass the S-motor ?</strong></font><hr /></blockquote><font size="2" face="Verdana, Arial">Yea, they make cable actuated replacements that are more reliable... you can find them at places like Quadratec. But they are somewhat pricey.

Or, you could replace the 2 piece shaft with much stronger 1 piece TJ shaft and defeat the need for the shifter motor all together. The front driveshaft would turn all the time then, but thats no big deal, if you have a front locker it would anyway. Worst case you might have to go get the front driveshaft balanced.

Robert Gorrell
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Unread 04-03-2002, 03:54 PM   #3
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You might have a broken vacuum line somewhere. The shift motor is vacuum activated and if one is broken or pulled out the shift motor won't engage. I'd check those out first.
89' YJ - 4.2 - NV4500 - NP231w/sye - 1" Body Lift - 2 1/2" Rancho Suspension Lift - 31" Firestone MTR - AR Outlaw II - Tomken Bumpers F & R - Warn 8000 front - Warn 6000 rec. mount rear - FlowFit Seats - Tom Woods Rear & Custom 2" front driveshafts
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Unread 04-03-2002, 09:54 PM   #4
Bob K
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Four possibilities:

1. Bad vacuum motor.

2. Bad vacuum hose.

3. Bad vacuum switch (on t-case)

4. Indicator light doesn't work.

Take your time and track down the problem. I have several times.
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