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-   -   700r4 problems (http://www.hotrodders.com/forum/700r4-problems-201076.html)

marcum75 06-27-2011 06:33 PM

700r4 problems
 
i have just rebuilt my 700r4 transmission in my 1988 gmc 1500 4x4, it will not shift out of first. i have took the valve body off and checked the tv valve, and it is not sticking, i have replaced the detent cadle and adjusted it, i have checked the govener and it is not sticking and is in good shape, i am out of ideas and need help in solving this problem before i drop the trans back out of the truck, any help or ideas are greatly needed

123pugsy 06-27-2011 06:41 PM

Servo?
2-4 band pin engaged?

Overdriv 06-27-2011 07:37 PM

The cable on a 700R4 is a throttle valve cable. It is imperative that it be adjusted correctly and have the correct geometry or the trans will not shift right and possibly not at all. If it came out of the truck you put it in then it's probably ok.

You need to take a pressure check of the trans and report back.

marcum75 06-28-2011 09:43 AM

700r4 not shifting out of first
 
is there any way to make the transmission shift manual, any tricks i might be able to do to the vavlebody,

ses800rmk 07-29-2012 11:57 AM

I have a 700r4 in a jeep that has the same problem. No upshift out of first gear. Everything seems to check out. Didn't know the tv cable affected the first shift.

Crosley 07-29-2012 01:45 PM

Quote:

Originally Posted by ses800rmk (Post 1578218)
I have a 700r4 in a jeep that has the same problem. No upshift out of first gear. Everything seems to check out. Didn't know the tv cable affected the first shift.

the TV cable minimum adjustment and maximum pull must be correct for proper shifts.

If minimum setting is too loose, the trans may go into a ''fail safe'' mode GM designed in. The trans will then shift late as if the throttle is WOT


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