4wd not working please help.
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Registered User
Joined: May 2013
Posts: 21
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From: corvallis oregon
4wd not working please help.
95 dodge ram 1500
318
5speed manual.
Problem.
Put into 4hi and 4low
Front drive line spins 4low acts like its in 4low
But front tires are not spinning.
Checked all the lines there good no cracks or vacuum leaks.
Any info would help on what to do next thank you.
318
5speed manual.
Problem.
Put into 4hi and 4low
Front drive line spins 4low acts like its in 4low
But front tires are not spinning.
Checked all the lines there good no cracks or vacuum leaks.
Any info would help on what to do next thank you.
Hall Of Fame
Joined: Jul 2006
Posts: 12,204
Likes: 10
From: Gainesville, Ga.
i wish i had a dollar for every cad problem posted. i'd be rich.
read this-
http://dodgeram.org/tech/repair/4X4/4x4_engagment.htm
your problem is either-
no vacuum at the cad. should be vac on one when in 2wd to move the collar, and vac on the other when in 4wd to move the collar the other way.
sticky/rusty diaphragm shaft inside the cad. needs cleaning/sanding.
step 1 - fix the vac first.
in the meantime, soak the 4 little cad bolts in pb-blaster or other penetrating oil.
read this-
http://dodgeram.org/tech/repair/4X4/4x4_engagment.htm
your problem is either-
no vacuum at the cad. should be vac on one when in 2wd to move the collar, and vac on the other when in 4wd to move the collar the other way.
sticky/rusty diaphragm shaft inside the cad. needs cleaning/sanding.
step 1 - fix the vac first.
in the meantime, soak the 4 little cad bolts in pb-blaster or other penetrating oil.
Captain
Joined: Jan 2011
Posts: 703
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From: Northern Ontario
LOL! My dad and I both lost our 4wd at almost roughly the same time. We both have 98's. Long story short, we both now have a posi lok lol. I love the thought of having a manually operated actuator that a vacuum operated one.
Veteran
Joined: Jul 2009
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From: Jefferson Ga
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Registered User
Joined: May 2013
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From: corvallis oregon
I was up hunting got stuck out in 4low rear tires where the only thing spinning
Put it in 4 high same thing.
Iv already checked the lines no leaks and it is getting vacuum but still nothing.
Put it in 4 high same thing.
Iv already checked the lines no leaks and it is getting vacuum but still nothing.
Thread Starter
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Registered User
Joined: May 2013
Posts: 21
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From: corvallis oregon
And I'm not gunna worry about buying a posi lock
Don't have the cash.
Just need to get it working again like it should in the first place.
I never wheel it hardly ever drive never needed 4wd tell that happened.
Don't have the cash.
Just need to get it working again like it should in the first place.
I never wheel it hardly ever drive never needed 4wd tell that happened.
Hall Of Fame
Joined: Jul 2006
Posts: 12,204
Likes: 10
From: Gainesville, Ga.
soak the 4 cad bolts with pb-blaster. they are very SMALL. gently remove them. if they don't come loose, soak them repeatedly. don't break them unless you want to drill them out.
label and remove the vac lines. put a pan under it - a cup full of gear oil will run out. remove the cad and take it to the work bench. bench test the cad with a vac pump. see it not work. lol. take some pics, then disassemble the stupid thing and unstick/clean the shaft. you can install a new gasket or just reseal it with RTV. RTV is fine.
label and remove the vac lines. put a pan under it - a cup full of gear oil will run out. remove the cad and take it to the work bench. bench test the cad with a vac pump. see it not work. lol. take some pics, then disassemble the stupid thing and unstick/clean the shaft. you can install a new gasket or just reseal it with RTV. RTV is fine.