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One or a combination of things, Bad vaccum motor, bad vaccum lines, and or dirty axle lubricant. After market shift motors are now available that use mechanical shifting means and replace the very failure prone vaccum motor.
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∙ 16y ago
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On 1994 Jeep Wrangler YJ why is front axle shift motor not engaging?
The front axle shift motor will not engage if: A. No power / bag grounding or the more likely failure is B. No Vacuum (4wd will not engage unless vacuum line going to the module is working properly) check/replace vacuum hose
WHY on my 89 Jeep Comanche my part time light is staying on and it will go in and out of 4wheele drive?
vacum motor on front left axle housing is bad. it moves a shift fork to engage the axle, there is a cable kit to replace the vacum motor available.
Is additive required in 2003 jeep rubicon Dana 44 front axle?
If the front axle is locking then yes. ie; limited slip
What would cause the front axel not to engage when the transfer case is shifted into 4wd and the rear is working on a jeep wrangler?
If it is 89 to 95 it has a central axle disconnect, they go out all the time. Check that.
Does a 2006 Jeep Wrangler have rotors or drums on the front axle?
RotorsRotors
Does a 1995 jeep Cherokee 5.2 limited have a front LSD?
The front axle did not have limited slip from the factory.
What is the axle ratio in a 2005 Jeep Wrangler?
The ratio is on a tag on front and rear axle between 2 of the cover bolts
My 4 wheel drive will not engage on your 1985 jeep wagoneer what could cause this?
Try checking the vacuum lines on the axle.
What kind of front axles come stock on a 2001 jeep wrangler sport?
The only factory front axle that came in a 2001 Jeep Wrangler is a D30.
Where is vacuum for 1989 jeep yj transfercase coming from?
the vacuum valve on the transfer case takes engine vacuum, and uses it to engage the central axle disconnect on the front axle when the case is shifted into 4wd. this is also the cause of the slight delay between shifting in/out of 4wd, and the 4wd indicator light turning on/off - real world, on an older Jeep, it takes up to a few seconds, sometimes, for the engine to pull enough vacuum to shift the front axle actuator. Both the vacuum switch, and the vacuum actuator on the axle are common failures, and there are a number of kits on the market to convert the front axle to use a cable actuator
1994 jeep grinding noise?
Front grinding could be a bad wheel bearing or in the front axle assembly.
Will a 1994 Jeep grand front axle with v8 fit a 1993 Jeep grand with a straight 6 and both a 4x4?
yes
