no overdrive in 700r4
#1
Junior Member
Thread Starter
Join Date: Feb 2009
Posts: 25
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1988 firebird trans am
Engine: 305 fuel inject. tbi
Transmission: 700r4
no overdrive in 700r4
my 700r4 tranny will not shift into overdrive. I can get it to if i go 80-85. It will shift easier to overdrive if it is cooler (the transmission). Also, if im in any gear and accelerate rapidly, it wont shift into the next gear. I have to let off on the gas for it to do so. any ideas?
#2
Senior Member
Join Date: Nov 2009
Location: San Jose CA
Posts: 349
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1986 IROC-Z
Engine: 305 TPI
Transmission: 700r4
Re: no overdrive in 700r4
try disconnecting the plug that plugs into the side of your transmission, test drive it and let us know what happens. however dont leave it unplugged, its only a test!
#3
Junior Member
Join Date: Jul 2007
Location: Forney, TX
Posts: 37
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1990 Camaro RS
Engine: 3.1 V6
Transmission: 700-R4
Re: no overdrive in 700r4
my 700r4 tranny will not shift into overdrive. I can get it to if i go 80-85. It will shift easier to overdrive if it is cooler (the transmission). Also, if im in any gear and accelerate rapidly, it wont shift into the next gear. I have to let off on the gas for it to do so. any ideas?
#4
Supreme Member
Join Date: Sep 2002
Location: Cary, North Carolina
Posts: 9,192
Likes: 0
Received 16 Likes
on
16 Posts
Car: 1992 RS
Engine: Carbed 350
Transmission: 700R4
Axle/Gears: 3.42 posi
Re: no overdrive in 700r4
Electrical connector only locks the torque converter - definitely adjust the tv cable as it's the only thing that determines shift points.
#5
Junior Member
Thread Starter
Join Date: Feb 2009
Posts: 25
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1988 firebird trans am
Engine: 305 fuel inject. tbi
Transmission: 700r4
Re: no overdrive in 700r4
Ok, thanks. Ill try adjusting the tv cable and unplugging the sensor. I know its not in overdrive because when it is, i can go 85 at about 2500 rpms where as third is around 4500! and i can tell when it shifts into 4 because it lurches forward. I dont think its just an overdrive problem, i think its a shifting problem. If i am in 1 or 2 and punch on it, it wont shift to the next gear unless i let off the gas almost completely. then it will squak the tires while shifting. and if its too high rpm, it waits until it goes back down to a certain point to shift, which in the process slows the car down. I very confused with it.
#6
Junior Member
Join Date: Aug 2011
Location: Was in Florida, now in Cincinnati, Oh
Posts: 28
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1992 Camaro Z28 G92
Engine: Pre-86 350 4 bolt. Carbed
Transmission: Borg-warner 5 speed
Axle/Gears: 2.73 non posi for now
Re: no overdrive in 700r4
I might be having a similar prob to the first guy....Question, for any and all. I recently put a carbed 350 4 bolt into a 92 z28 25th. and added a 700r4 from same year rs 305 TBI. Granted the RS had 203,XXX miles ran, but quikly became our parts car.
When I was putting trans in, i replaced the front seal and everything els seamed good. Upon test driving though, the car shifted a little high and i dont thing Over drive kicked in, but it goes in all 4 gears. Also the tach read 3,800 rpms at 70 mph. Trans is sluggish do to age and how many miles its seen, but should that stop it from hitting over drive?
Also note that the two plugs for the tranny in the 92 Z28 were little broken so we borrowed some from a z28 parts car we also have. Every gears works, shifts normal for the 700r4 but even at 40mph its wont kick down..yes TV cable is hooked up but may need adjusting...need help..or maybe new trans?
When I was putting trans in, i replaced the front seal and everything els seamed good. Upon test driving though, the car shifted a little high and i dont thing Over drive kicked in, but it goes in all 4 gears. Also the tach read 3,800 rpms at 70 mph. Trans is sluggish do to age and how many miles its seen, but should that stop it from hitting over drive?
Also note that the two plugs for the tranny in the 92 Z28 were little broken so we borrowed some from a z28 parts car we also have. Every gears works, shifts normal for the 700r4 but even at 40mph its wont kick down..yes TV cable is hooked up but may need adjusting...need help..or maybe new trans?
Thread
Thread Starter
Forum
Replies
Last Post
[CA] 700R4 trans & parts
6998poncho
Engine/Drivetrain/Suspension Parts for Sale
0
09-25-2015 02:56 PM