4 wheel drive on a 95 Chev Blazer [Resolved]

Lickitysplit · 01-01-2007, 02:39 PM

I have a 1995 Chevy Blazer that has push button 4 wheel drive. When I go to engage the 4 wheel drive the transfer case and drive shaft engage but the front wheels don't turn. What could be causing this?

**Midnight Tech** · 01-02-2007, 08:09 PM

Is it actually turning that front driveshaft? Sounds odd if shaft is turning and nothing happens...

Lickitysplit · 01-02-2007, 08:22 PM

Yes the front drive shaft is turning. There is a shift cable that runs from the side of the pumpkin to a vacuum actuator under the battery, I've been told that this could be the problem. The cable also goes to a shift shaft fork that goes into a thrust washer that pushes the carrier connector which makes the front wheels turn. I am thinking that something may be broke in there if it's not the cable itself. Was wondering if someone had this problem before and what they did to fix it. Was hoping to get some answers here so I don't have to take it in.....afraid this is what is going to happen.

**Midnight Tech** · 01-02-2007, 09:10 PM

Check all those vacuum lines...seen them give more trouble than anything else.

Lickitysplit · 01-03-2007, 05:29 PM

Been there done that........vacuum lines all work. I am thinking that it is broke somewhere in that cable or in the fork.

Lickitysplit · 01-03-2007, 05:32 PM

Every thing works, just can't figure out why the front axels don't turn. I don't wanna tear the front end apart and not get it back together. Was hoping maybe someone out there has had a problem like this before and would have some quick answers!

dre43jun · 01-06-2007, 12:04 PM

Please check to see if the vacume actuator under the battery tray is moving when you shift the truck into 4x4 if it does not move then check for vacume at the actuator when the truck is in 4x4 with the enngine runnung.

If there is no vacume then check the vacume switch at the top rear of the transfere case it has three vacume lines going to it one from the engine one to a vent and the other to the actuator these switches stick alot and a new one is about 20 $ should be a easy fix if there is vacume at the switch and none at the actuator then replace the vacume switch on the transfere case...

DRE43JUN KEG Automotive

Volt-Schwibe · 01-24-2007, 05:31 PM

start it up, and without getting under it, find a spot where you can see that fork, and then push the button a few times and see if it's moving properly.

it might just not be moving far enough.

replacing all that vaccuum hose is a great idea, as well as doing a vaccum check at the actuator with it engaged.

Lickitysplit · 01-25-2007, 09:39 AM

I have the problem fixed......Thanks for all your suggestions. It wasn't any of the vacuum lines.

**Midnight Tech** · 01-25-2007, 05:54 PM

What did it actually turn out to be?

Lickitysplit · 01-26-2007, 07:53 AM

It was an internal problem......the fork was busted.

Volt-Schwibe · 01-26-2007, 01:45 PM

ouch, i can only imagine that cost you a chunk of change to fix.

Lickitysplit · 01-26-2007, 06:01 PM

not really, found a used front end with cable assembly for $165............8 hours later my wife drove off with a smile on her face again

**Midnight Tech** · 01-26-2007, 08:39 PM

Sounds like you came out of this very good Lickitysplit!

Gonna mark this one Resolved.

01-01-2007, 02:39 PM	#1 (permalink)
Lickitysplit Registered User Join Date: Jan 2007 Posts: 7 OS: win95/98	4 wheel drive on a 95 Chev Blazer [Resolved] I have a 1995 Chevy Blazer that has push button 4 wheel drive. When I go to engage the 4 wheel drive the transfer case and drive shaft engage but the front wheels don't turn. What could be causing this?

01-02-2007, 08:09 PM	#2 (permalink)
Midnight Tech Admin/Head GreaseMonkey/Igor's alter ego/Grand Exalted PoohBah Join Date: Dec 2001 Location: SC Posts: 2,920 OS: Windows XP Home/Pro SP3/Windows 98SE/Fedora Core 6/RH 7.2 with Autopoint/TAMS II	Is it actually turning that front driveshaft? Sounds odd if shaft is turning and nothing happens... __________________ Please post all questions in the appropriate forum. Questions sent by email or PM will not be answered. Sharing my life...with my Imzadi! Interested in Trek gaming? Check out the Dynaverse! Proud supporter of the Carolinas Aviation Museum. If we have helped you in any way, please donate to keep TSF up and running!

01-02-2007, 09:10 PM	#4 (permalink)
Midnight Tech Admin/Head GreaseMonkey/Igor's alter ego/Grand Exalted PoohBah Join Date: Dec 2001 Location: SC Posts: 2,920 OS: Windows XP Home/Pro SP3/Windows 98SE/Fedora Core 6/RH 7.2 with Autopoint/TAMS II	Check all those vacuum lines...seen them give more trouble than anything else. __________________ Please post all questions in the appropriate forum. Questions sent by email or PM will not be answered. Sharing my life...with my Imzadi! Interested in Trek gaming? Check out the Dynaverse! Proud supporter of the Carolinas Aviation Museum. If we have helped you in any way, please donate to keep TSF up and running!

01-06-2007, 12:04 PM	#7 (permalink)
dre43jun Registered User Join Date: Dec 2006 Location: northeast US Posts: 35 OS: xp My System	Vacume actuator Please check to see if the vacume actuator under the battery tray is moving when you shift the truck into 4x4 if it does not move then check for vacume at the actuator when the truck is in 4x4 with the enngine runnung. If there is no vacume then check the vacume switch at the top rear of the transfere case it has three vacume lines going to it one from the engine one to a vent and the other to the actuator these switches stick alot and a new one is about 20 $ should be a easy fix if there is vacume at the switch and none at the actuator then replace the vacume switch on the transfere case... DRE43JUN KEG Automotive

01-24-2007, 05:31 PM	#8 (permalink)
Volt-Schwibe Asst. Manager, Automotive Forums; HJT Trainee Join Date: Jan 2003 Location: Behind you, watching you as you type. Posts: 7,372 OS: Click "My System" to view details My System	start it up, and without getting under it, find a spot where you can see that fork, and then push the button a few times and see if it's moving properly. it might just not be moving far enough. replacing all that vaccuum hose is a great idea, as well as doing a vaccum check at the actuator with it engaged. __________________ <signature> TSF is funded by our Admin's pocket, care to help? Power Tip: Subscribe to your thread (Thread Tools) to receive an instant email notification when you get a reply. New Members: Creating a single new thread in the correct section is the best way to assure your thread will receive a reply. </signature>

01-02-2007, 08:22 PM	#3 (permalink)
Lickitysplit Registered User Join Date: Jan 2007 Posts: 7 OS: win95/98	Yes the front drive shaft is turning. There is a shift cable that runs from the side of the pumpkin to a vacuum actuator under the battery, I've been told that this could be the problem. The cable also goes to a shift shaft fork that goes into a thrust washer that pushes the carrier connector which makes the front wheels turn. I am thinking that something may be broke in there if it's not the cable itself. Was wondering if someone had this problem before and what they did to fix it. Was hoping to get some answers here so I don't have to take it in.....afraid this is what is going to happen.

01-03-2007, 05:29 PM	#5 (permalink)
Lickitysplit Registered User Join Date: Jan 2007 Posts: 7 OS: win95/98	Been there done that........vacuum lines all work. I am thinking that it is broke somewhere in that cable or in the fork.

01-03-2007, 05:32 PM	#6 (permalink)
Lickitysplit Registered User Join Date: Jan 2007 Posts: 7 OS: win95/98	Every thing works, just can't figure out why the front axels don't turn. I don't wanna tear the front end apart and not get it back together. Was hoping maybe someone out there has had a problem like this before and would have some quick answers!

01-25-2007, 09:39 AM	#9 (permalink)
Lickitysplit Registered User Join Date: Jan 2007 Posts: 7 OS: win95/98	I have the problem fixed......Thanks for all your suggestions. It wasn't any of the vacuum lines.

01-25-2007, 05:54 PM	#10 (permalink)
Midnight Tech Admin/Head GreaseMonkey/Igor's alter ego/Grand Exalted PoohBah Join Date: Dec 2001 Location: SC Posts: 2,920 OS: Windows XP Home/Pro SP3/Windows 98SE/Fedora Core 6/RH 7.2 with Autopoint/TAMS II	What did it actually turn out to be? __________________ Please post all questions in the appropriate forum. Questions sent by email or PM will not be answered. Sharing my life...with my Imzadi! Interested in Trek gaming? Check out the Dynaverse! Proud supporter of the Carolinas Aviation Museum. If we have helped you in any way, please donate to keep TSF up and running!

01-26-2007, 07:53 AM	#11 (permalink)
Lickitysplit Registered User Join Date: Jan 2007 Posts: 7 OS: win95/98	It was an internal problem......the fork was busted.

01-26-2007, 01:45 PM	#12 (permalink)
Volt-Schwibe Asst. Manager, Automotive Forums; HJT Trainee Join Date: Jan 2003 Location: Behind you, watching you as you type. Posts: 7,372 OS: Click "My System" to view details My System	ouch, i can only imagine that cost you a chunk of change to fix. __________________ <signature> TSF is funded by our Admin's pocket, care to help? Power Tip: Subscribe to your thread (Thread Tools) to receive an instant email notification when you get a reply. New Members: Creating a single new thread in the correct section is the best way to assure your thread will receive a reply. </signature>

01-26-2007, 06:01 PM	#13 (permalink)
Lickitysplit Registered User Join Date: Jan 2007 Posts: 7 OS: win95/98	not really, found a used front end with cable assembly for $165............8 hours later my wife drove off with a smile on her face again

01-26-2007, 08:39 PM	#14 (permalink)
Midnight Tech Admin/Head GreaseMonkey/Igor's alter ego/Grand Exalted PoohBah Join Date: Dec 2001 Location: SC Posts: 2,920 OS: Windows XP Home/Pro SP3/Windows 98SE/Fedora Core 6/RH 7.2 with Autopoint/TAMS II	Sounds like you came out of this very good Lickitysplit! Gonna mark this one Resolved. __________________ Please post all questions in the appropriate forum. Questions sent by email or PM will not be answered. Sharing my life...with my Imzadi! Interested in Trek gaming? Check out the Dynaverse! Proud supporter of the Carolinas Aviation Museum. If we have helped you in any way, please donate to keep TSF up and running!