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Blacklabel21
06-19-08, 11:34 PM
I have a 1986 chevy s10 2.8 4wd.Well the problem i am having with my automatic transmission is evertime it gets ready to shift into 2nd gear it wont at all the way i get it to shift is to get it about up to 20 then let off the gas then it shifts.everything past that shifts fine with no problems.I am taking it in tommary to get the tranny flush.But if you guys could help me on this one it would be great to know whats wrong with it.And the transmission is a 700r4.
lucy_blue_93
06-19-08, 11:43 PM
i know this seems kinda obvious, but have you checked the fluid lately?
csl2006
06-20-08, 12:40 AM
not sure if it has a vaccum on that tranny for the year or not i'd check to see if it does and see if you have a leak or blockage.
Mikz86TA
06-20-08, 02:43 AM
TV Cable is mis adjusted.
Blacklabel21
06-20-08, 12:43 PM
Just got back from having the transmission flush and that didnt help it.
Mikz86TA
06-20-08, 12:51 PM
Again. TV Cable sounds mis-adjusted
TV Cable is mis adjusted.
Blacklabel21
06-20-08, 01:05 PM
I know where its at.But how do i fix the problem.
Blacklabel21
06-20-08, 11:21 PM
well the tv cable is fine.I think the transmission is dieing.
csl2006
06-21-08, 01:56 AM
get a new one then?
Mikz86TA
06-21-08, 02:30 AM
Did you PROPERLY adjust it?
neo71665
06-21-08, 10:03 AM
Did you PROPERLY adjust it?

Prolly what killed it
Blacklabel21
06-21-08, 11:31 AM
Well i am having problems with second gear and when i put it in overdrive it makes grinding noise or wont go in overdrive.So i think the tranny is shot.
neo71665
06-21-08, 01:56 PM
If the TV cable is not adjusted right it will destroy the tranny. To put it in real simple terms cause I'm lazy and don't feel like typing it all out. The TV cable controls the pressure that shifts the tranny.
Mikz86TA
06-21-08, 02:38 PM
Most likely the 2-4 Band is shot. If its grinding then its eating the drum. A new drum is about $50 and a good band is about $25 and up. Band can be replaced fairly easy with just pulling the tranny, removing the pump and servo assembly. But the drum replacement will require you to remove the input shaft/drum/clutchpack assembly and disassemble it then reassemble it. Not extremely difficult if you are mechanically inclined, you keep parts in order, have patience and a ATSG manual.
But basically you may as well get a full rebuild for all that trouble.
Well i am having problems with second gear and when i put it in overdrive it makes grinding noise or wont go in overdrive.So i think the tranny is shot.
Mikz86TA
06-21-08, 02:40 PM
X2 exactly!

If and when you rebuild it, be sure to go over and get the updates for it.
What year is the tranny?
If the TV cable is not adjusted right it will destroy the tranny. To put it in real simple terms cause I'm lazy and don't feel like typing it all out. The TV cable controls the pressure that shifts the tranny.
Blacklabel21
06-22-08, 05:31 AM
1989 700r4
Mikz86TA
06-22-08, 01:32 PM
1989 has not the most up-to-date internals. Id find a 1991 or 1992 year 700R4 to replace it with. Along with a good updated rebuild kit, thats as good as you get for those. 1993 was a changeover year and its hit or miss getting the right one for your application. 1994 and up are 4L60E's and electronically controlled. Somewhere along 1990-ish, GM renamed the 700R4 to 4L60. They re-assigned their ID system with the Hydramatic division for easier recognition.

4 means four forward gears (4 speed)
L means logitudally placed (rear wheel drive)
60 is a strength designation
adding the E means its an electronically cotrolled tranny.