transfer case problem?

StevieC · 04-16-2005, 08:39 PM

I discovered that my 4wheel is not working the hard way when I got stuck in the snow recently. Today I put the truck in 4wheel and then tried to turn the front drive shaft by hand and it spun freely. It did so in both 4 hi and 4 low. The truck does however go into the lower drive ratio when its in 4low, but no movement from the drive shaft. Any ideas on why its not working? It's a 91 V6 Auto. Thanks .

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StevieC · 04-17-2005, 09:01 PM

Any Ideas?

Eddie Monster · 04-17-2005, 09:30 PM

does it have manual locking hubs on the front wheels? if so u need to lock them ,move the dial from free to engaged.

StevieC · 04-21-2005, 08:27 PM

The truuck has ADD. Like I said, the front drive shaft won't engage, so its a problem with the T-case. It spins freely while in 4wheel with the truck stopped.

93Toyota PU · 04-22-2005, 07:18 AM

Is your dash light on which shows "4WD"?

StevieC · 04-22-2005, 09:57 PM

Yeah the light goes on when I shift it in. I traced the leads for that light and it goes to the front diff. The 4wd light would seem to indicate that the ADD is working. I am wondering if it may be something simple before I tear out my t-case.

eric-the-red · 04-23-2005, 02:29 PM

Does it have push button 4wd, like the newer automatics, if so I think there is a solenoid that switches from 2-4. I'm not an expert on autos, mines a 5 speed, not that I'm an expert on them either but I know a little more

I do have a factory manual I can email to you if you want to look at that. If so send me an email address.

StevieC · 04-30-2005, 08:19 AM

It's a floor lever shift for 4wheel. That would be killer if you could send a scan my haynes is not very helpfull.

stephenskis@hotmail.com

george16 · 04-30-2005, 07:19 PM

Check the vacuum lines for any leaks. ADD won't engage fully if there is a leak in the lines.

George

mt_goat · 04-30-2005, 08:15 PM

Here is the 93 FSM, it should be about the same as the 91: http://personal.utulsa.edu/~nathan-b...fsm/index.html

StevieC · 04-30-2005, 08:18 PM

thanks man!

mt_goat · 04-30-2005, 08:25 PM

Your t-case should be the chain drive (VF1A).

StevieC · 04-30-2005, 11:57 PM

Thanks again for th FSM. Based on the drawings I'm guessing it's the linkage to the front drive shift fork or the fork itself. It's a seperate linkage for the hi/low so thats why it can shift into low and not 4wheel. I'll take a look tomorrow.

mt_goat · 05-01-2005, 06:43 AM

I've heard the chain drive t-cases are weaker but I've never seen a failure first hand. Let us know what you find out. Good luck.

04-22-2005, 07:18 AM	#5 (permalink)
93Toyota PU Registered User Join Date: Feb 2005 Location: Ohio Posts: 85	Is your dash light on which shows "4WD"? __________________ 1993 Toyota 4x4 PU 22RE 5 speed 30x9.5-15

04-30-2005, 07:19 PM	#9 (permalink)
george16 Registered User Join Date: Sep 2002 Location: Japan Posts: 495	Check the vacuum lines for any leaks. ADD won't engage fully if there is a leak in the lines. George __________________ *99 Desert Dune SR5 4WD 5spd, Amsoil filter, Extended diff breathers, Deck plate mod. Bilstein Shocks, Hella 500 fog lights mounted on TJM T-15, Stubbs sliders, Type "O" Throttle body gasket, Optima Redtop, ARB Air compressor, ARB RD23 air locker, Shackle hangers, Custom catback exhaust with Magnaflow muffler.

04-30-2005, 08:15 PM	#10 (permalink)
mt_goat Contributing Member Join Date: Nov 2002 Location: Oklahoma State Posts: 8,919	Here is the 93 FSM, it should be about the same as the 91: http://personal.utulsa.edu/~nathan-b...fsm/index.html __________________ ~Dale~ 93 4X4 ext-cab, auto, SR5, 3.4 V6, supercharged, 2.1" pulley, URD fuel mods, Aquamist WI, IPT valve body mod, dual cases, 4" superlift front, Alcan springs rear, 33 BFG MT, ARB locked front & rear, 5.29 US Gears, RB 1" Body Lift, 1.5" ball joint spacers, manual hubs, TJM T-17, Warn m8000. Last edited by mt_goat; 04-30-2005 at 08:23 PM.

04-30-2005, 08:25 PM	#12 (permalink)
mt_goat Contributing Member Join Date: Nov 2002 Location: Oklahoma State Posts: 8,919	Your t-case should be the chain drive (VF1A). __________________ ~Dale~ 93 4X4 ext-cab, auto, SR5, 3.4 V6, supercharged, 2.1" pulley, URD fuel mods, Aquamist WI, IPT valve body mod, dual cases, 4" superlift front, Alcan springs rear, 33 BFG MT, ARB locked front & rear, 5.29 US Gears, RB 1" Body Lift, 1.5" ball joint spacers, manual hubs, TJM T-17, Warn m8000.

05-01-2005, 06:43 AM	#14 (permalink)
mt_goat Contributing Member Join Date: Nov 2002 Location: Oklahoma State Posts: 8,919	I've heard the chain drive t-cases are weaker but I've never seen a failure first hand. Let us know what you find out. Good luck. __________________ ~Dale~ 93 4X4 ext-cab, auto, SR5, 3.4 V6, supercharged, 2.1" pulley, URD fuel mods, Aquamist WI, IPT valve body mod, dual cases, 4" superlift front, Alcan springs rear, 33 BFG MT, ARB locked front & rear, 5.29 US Gears, RB 1" Body Lift, 1.5" ball joint spacers, manual hubs, TJM T-17, Warn m8000.

04-17-2005, 09:01 PM	#2 (permalink)
StevieC Registered User Join Date: Jan 2005 Location: Park City, Utah Posts: 33	Any Ideas?

04-17-2005, 09:30 PM	#3 (permalink)
Eddie Monster Registered User Join Date: Mar 2005 Location: south california Posts: 43	does it have manual locking hubs on the front wheels? if so u need to lock them ,move the dial from free to engaged.

04-21-2005, 08:27 PM	#4 (permalink)
StevieC Registered User Join Date: Jan 2005 Location: Park City, Utah Posts: 33	The truuck has ADD. Like I said, the front drive shaft won't engage, so its a problem with the T-case. It spins freely while in 4wheel with the truck stopped.

04-22-2005, 09:57 PM	#6 (permalink)
StevieC Registered User Join Date: Jan 2005 Location: Park City, Utah Posts: 33	Yeah the light goes on when I shift it in. I traced the leads for that light and it goes to the front diff. The 4wd light would seem to indicate that the ADD is working. I am wondering if it may be something simple before I tear out my t-case.

04-23-2005, 02:29 PM	#7 (permalink)
eric-the-red Contributing Member Join Date: Oct 2003 Location: Port Coquitlam, BC Posts: 2,493	Does it have push button 4wd, like the newer automatics, if so I think there is a solenoid that switches from 2-4. I'm not an expert on autos, mines a 5 speed, not that I'm an expert on them either but I know a little more I do have a factory manual I can email to you if you want to look at that. If so send me an email address.

04-30-2005, 08:19 AM	#8 (permalink)
StevieC Registered User Join Date: Jan 2005 Location: Park City, Utah Posts: 33	It's a floor lever shift for 4wheel. That would be killer if you could send a scan my haynes is not very helpfull. stephenskis@hotmail.com

04-30-2005, 08:18 PM	#11 (permalink)
StevieC Registered User Join Date: Jan 2005 Location: Park City, Utah Posts: 33	thanks man!

04-30-2005, 11:57 PM	#13 (permalink)
StevieC Registered User Join Date: Jan 2005 Location: Park City, Utah Posts: 33	Thanks again for th FSM. Based on the drawings I'm guessing it's the linkage to the front drive shift fork or the fork itself. It's a seperate linkage for the hi/low so thats why it can shift into low and not 4wheel. I'll take a look tomorrow.

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