Help with friggin' 700R4 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

RainDog · 05-20-2002, 06:58 PM

hey guys--I'm having problems with the tranny in my truck, and need some help diagnosing. I'd really hate to have to slap a new tranny in, this one is a reman. from ACDelco that was put in less than a year and a half ago, so I'm hoping it's nothing too major....Anyways, it's been slipping a little for the past month and a half or so (kind of a soft skip when it would shift up), then last week, it locked up in 1st; reverse worked fine, but it wouldn't shift any higher in Drive. Now, if I start it cold, it shifts okay (a little loose) for about 15 minutes, then starts to stick more and more until it finally won't shift out of 1st. Once again, reverse works fine. Seems the warmer the tranny gets, the more it f**ks up. Fluid is full, and doesn't look contaminated. I don't know much about trannies, so any help would be appreciated. Thanks!

*Zkast* · 05-20-2002, 07:18 PM

Have you ever had the trans serviced?

A restricted filter will cause symptoms like this but usually you will hear a strange whine also.

Wouldnt hurt to drop the pan and inspect for *Extra* pieces(lets hope not), change the filter and add fresh fluid. Be sure to clean the magnet good after inspecting the pan.
You can tell alot by whats in the pan (clutch particles, broken componants, or debris)

------------------
Pictures and more...
piston@zkast.com
'71 LWB
350/350T, PS/PB
Special options? Yes, RUST... Need some?
------------------------------------------
Webmaster/Team owner
www.zkast.com
Garrett - Olathe, Kansas

O'l Buck · 05-21-2002, 12:10 AM

sounds like maybe you have a little piece of dirt or a metal filing in the valve body. 700r4s are not very tolerant to dirt.

------------------
"In the words of Motley Crue, This will always be my home sweet home"

Ol' Buck: '72 Chevy 1/2T 4x4 shortbox stepside 350/350auto on '84
ralleys and 31/10.5s

Angel girl: 67 Cutlass convertible
330, 3spd stick

Greener: 90 GMC Jimmy
350/auto
Chad Stephens
Orleans,NE

no name yet: 72 442 under serious construction
my site:
http://communities.msn.com/Beastonabudget/homepage

ty1295 · 05-21-2002, 07:17 AM

Change fluid as suggested, and add a bottle of lube guard. Napa has it I believe.

I have seen 700's with similar issues, get fixed by the lubeguard. Seems to free up valves that get sticky sometimes.

------------------
Jeff Scott
'70 GMC Stepside, Short box
'67 Camaro
'63 Nova
'92 GMC typhoon

05-20-2002, 06:58 PM	#1
RainDog Registered User Join Date: Mar 2001 Location: Burien, WA, USA Posts: 391	Help with friggin' 700R4 hey guys--I'm having problems with the tranny in my truck, and need some help diagnosing. I'd really hate to have to slap a new tranny in, this one is a reman. from ACDelco that was put in less than a year and a half ago, so I'm hoping it's nothing too major....Anyways, it's been slipping a little for the past month and a half or so (kind of a soft skip when it would shift up), then last week, it locked up in 1st; reverse worked fine, but it wouldn't shift any higher in Drive. Now, if I start it cold, it shifts okay (a little loose) for about 15 minutes, then starts to stick more and more until it finally won't shift out of 1st. Once again, reverse works fine. Seems the warmer the tranny gets, the more it f**ks up. Fluid is full, and doesn't look contaminated. I don't know much about trannies, so any help would be appreciated. Thanks! __________________ "Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin slitting throats."

05-21-2002, 12:10 AM	#3
O'l Buck Recovering Truck Driver Join Date: Mar 2002 Location: Orleans, NE USA Posts: 1,883	sounds like maybe you have a little piece of dirt or a metal filing in the valve body. 700r4s are not very tolerant to dirt. ------------------ "In the words of Motley Crue, This will always be my home sweet home" Ol' Buck: '72 Chevy 1/2T 4x4 shortbox stepside 350/350auto on '84 ralleys and 31/10.5s Angel girl: 67 Cutlass convertible 330, 3spd stick Greener: 90 GMC Jimmy 350/auto Chad Stephens Orleans,NE no name yet: 72 442 under serious construction my site: http://communities.msn.com/Beastonabudget/homepage __________________ 67 K-20 350, SM465, Eaton rear, 4.56 no spin option 00 Dodge 2500 4x4, 24V cummins, 5 speed Chad South Central Nebraska

05-21-2002, 07:17 AM	#4
ty1295 Registered User Join Date: Mar 2002 Location: jeffersonville, IN Posts: 99	Change fluid as suggested, and add a bottle of lube guard. Napa has it I believe. I have seen 700's with similar issues, get fixed by the lubeguard. Seems to free up valves that get sticky sometimes. ------------------ Jeff Scott '70 GMC Stepside, Short box '67 Camaro '63 Nova '92 GMC typhoon __________________ Jeff Scott '70 GMC Stepside, Short box '63 Nova '92 GMC typhoon '95 Tahoe

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05-20-2002, 07:18 PM	#2
Zkast Account Suspended Join Date: May 2002 Location: Olathe, Kansas Posts: 929	Have you ever had the trans serviced? A restricted filter will cause symptoms like this but usually you will hear a strange whine also. Wouldnt hurt to drop the pan and inspect for Extra pieces(lets hope not), change the filter and add fresh fluid. Be sure to clean the magnet good after inspecting the pan. You can tell alot by whats in the pan (clutch particles, broken componants, or debris) ------------------ Pictures and more... piston@zkast.com '71 LWB 350/350T, PS/PB Special options? Yes, RUST... Need some? ------------------------------------------ Webmaster/Team owner www.zkast.com Garrett - Olathe, Kansas



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