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11-02-07, 02:31 PM
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 #1 (permalink)
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Forum Regular
Join Date: Nov 2004
Location: SE South Dakota
Posts: 248
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T100 ADD 4wd problems
I have a 95 t100 and just noticed that 4wd will not engage(worked fine last sping). I located the vacuum lines on the acuator and firewall and they same to be intact with no cracks.
Here is the strange thing, while trouble shooting I reversed the lines on the acuator and then 4wd engaged as soon as I shifted into 4wd?
My first thought was a bad line so I switched them back to std on the actuator and reversed them at the electric switches, same thing instant on?
anyone have diagram for the system?
__________________
94 locked 200,000 mile club
Birfs clicking(not no more, bought some ebay bargains)
Driver side visor hangen
Seat belt hanging out the door
2000 rpm blast off starts w some rattle(fixed with a new throttle bodygasket and a good cleaning)
How come I can only think of things I can think of?
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11-03-07, 01:03 AM
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#2 (permalink)
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Site Addict
Join Date: Oct 2004
Location: Stafford, VA
Posts: 2,386
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I am not exactly sure what your problem is from your description, but I hope these will help.
Dan
__________________
No problem, I'll just tow the pig to Salt Lake on a UHAUL trailer...... 
95 T100, beater edition (vacationing in Idaho)
97 Land Cruiser, Collectors Edition
01 Sequoia Limited
02 Camry, Commuter Chariot Extraordinaire
"A vehicle's capabilities are inseparably linked to the mental instability of the driver" 
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11-03-07, 08:21 PM
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#3 (permalink)
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Forum Regular
Join Date: Nov 2004
Location: SE South Dakota
Posts: 248
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Thanks, anyone know how the vac system works? Does it keed vac applied to each port at all times? Or only to activate
__________________
94 locked 200,000 mile club
Birfs clicking(not no more, bought some ebay bargains)
Driver side visor hangen
Seat belt hanging out the door
2000 rpm blast off starts w some rattle(fixed with a new throttle bodygasket and a good cleaning)
How come I can only think of things I can think of?
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11-04-07, 01:10 AM
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#4 (permalink)
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Site Addict
Join Date: Oct 2004
Location: Stafford, VA
Posts: 2,386
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I would check for you, but I took the ADD out of my rig....
I'll take a look through the manual tho...
Try the tests above. They should be able to isolate the problem.
__________________
No problem, I'll just tow the pig to Salt Lake on a UHAUL trailer......
95 T100, beater edition (vacationing in Idaho)
97 Land Cruiser, Collectors Edition
01 Sequoia Limited
02 Camry, Commuter Chariot Extraordinaire
"A vehicle's capabilities are inseparably linked to the mental instability of the driver"
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11-06-07, 08:23 PM
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#5 (permalink)
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Join Date: Feb 2007
Location: Nashville TN...But I miss Richlands NC
Posts: 1,189
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Quote:
Originally Posted by KliersLC
I took the ADD out of my rig....
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I'd have to say I did the same. WAY easier, shafts don't rotate all the time (sling grease, MPG slight loss, wear), simply find some Asins bolt them on. I pulled a vac on my actuator vac hose crimped it in my fingers and blocked the line and let go, works/ed like a charm!
FFT
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11-07-07, 10:56 PM
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#6 (permalink)
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Forum Regular
Join Date: Nov 2004
Location: SE South Dakota
Posts: 248
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Turns out one of the vac solenoids is bad, $400 for new from Toyota.
__________________
94 locked 200,000 mile club
Birfs clicking(not no more, bought some ebay bargains)
Driver side visor hangen
Seat belt hanging out the door
2000 rpm blast off starts w some rattle(fixed with a new throttle bodygasket and a good cleaning)
How come I can only think of things I can think of?
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11-07-07, 11:59 PM
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#7 (permalink)
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Site Addict
Join Date: Oct 2004
Location: Stafford, VA
Posts: 2,386
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That should be the same solenoid as on a mid 90s pickup, or maybe even a taco. I'd send you one of mine, but my pickup is on vacation in CA.....
See if you can pull it off and take it to a junkyard to compare.
__________________
No problem, I'll just tow the pig to Salt Lake on a UHAUL trailer......
95 T100, beater edition (vacationing in Idaho)
97 Land Cruiser, Collectors Edition
01 Sequoia Limited
02 Camry, Commuter Chariot Extraordinaire
"A vehicle's capabilities are inseparably linked to the mental instability of the driver"
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KliersLC
