4x4 Gremlin, need some help!
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Junior User
Joined: Feb 2011
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what are your symptoms?
dchambelin, thanks for all the good info you have beeen very helpful. i will go through the vaccum sys just like you say to! I bought the truck with the hubs already swaped out, so im not sure if those vac lines have been takin care of or not, usually truck is running when i go into 4x4 so if i have had this vac prob i would not have heard the pump runing over the engine noise...lol!
thanks again
Lead Driver
Joined: Sep 2007
Posts: 8,180
Likes: 669
From: Scio, OR
Second, unlock your hubs and put your shift lever in 4WD. Try to turn the front drive line. It should not turn. If it does, you're transfer case is shot, or you have a problem in the shift linkage. The shift linkage being the more likely problem.
New User
Joined: Feb 2011
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well guys
test 1
lock the 2 front hubs and tryed to turn the u joints and the passanger side is spinning so... the drivers side is not able to spin
test 2 4x4 engaged the front shaft does not spin
so do i replace both front hub locks and how easy is
just pop the old ones out and put the new ones in???
test 1
lock the 2 front hubs and tryed to turn the u joints and the passanger side is spinning so... the drivers side is not able to spin
test 2 4x4 engaged the front shaft does not spin
so do i replace both front hub locks and how easy is
just pop the old ones out and put the new ones in???
Lead Driver
Joined: Sep 2007
Posts: 8,180
Likes: 669
From: Scio, OR
well guys
test 1
lock the 2 front hubs and tryed to turn the u joints and the passanger side is spinning so... the drivers side is not able to spin
test 2 4x4 engaged the front shaft does not spin
so do i replace both front hub locks and how easy is
just pop the old ones out and put the new ones in???
test 1
lock the 2 front hubs and tryed to turn the u joints and the passanger side is spinning so... the drivers side is not able to spin
test 2 4x4 engaged the front shaft does not spin
so do i replace both front hub locks and how easy is
just pop the old ones out and put the new ones in???
I'd also take the passenger side one out and inspect the axle shaft and needle bearings and such carefully. I don't know how many miles you have, but it's unusual in my experience for the manual hub locks to fail.
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hey guys im back!! ok first of all i have not been able to locate a new pigtail conector, i have not yet made it to dealer, hopfully tomorrow, i have given a pretty good look at vac lines and conections and havent found anything tobe leaking (however i did not get tooo involved due to work and weather conditions) so my question is if the conection on the tcase motor is bad (new pigtail still needed) would this cause my vac issue! before i messed with the t case conector pump was not running all the time and hvac controls worked correctly? i realize i have to fix the tcase motor conection regaurdless but im worndering if i may have another prob. thanks again everyone
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Junior User
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Lead Driver
Joined: Sep 2007
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From: Scio, OR
No. Your transfer case problem is not related to your vacuum problem. You have a vacuum leak. Start at the pump, plug nipple to the pump with your finger and see if the pump shuts off. If it does then the pump is working. Then reconnect that line and move to the other end. Disconnect it and plug the line to the pump, see if the pump stops. Keep working down the lines doing this until you find the line where the pump never stops running. The last line you test will be the leaking one.
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Junior User
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thanks d, i will get back into it this week, i just dont get why the vac prob started! no prob with vac pump running untill i got the tcase motor to "do somthing"! i have pluged all vac lines that are accesable from under hood and pump did not stop, so maybe a pump?
Lead Driver
Joined: Sep 2007
Posts: 8,180
Likes: 669
From: Scio, OR
The pump has the vacuum regulator built into it. When the vacuum reaches the preset level the pump shuts off. So, if you plug the nipple, the pump should reach it's required vacuum immediately and shut off. If it doesn't, it either isn't making vacuum at all, or the regulator switch is broken. Either way you'll need to replace the pump.
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