Every gear goes forward like it’s in drive
08-14-2022, 05:03 PM
#1
Junior Member
Thread Starter
Join Date: Aug 2022
Posts: 2
Likes: 0
Received 0 Likes
on
0 Posts
Every gear goes forward like it’s in drive
1991 trans am stock automatic transmission
It drove fine yesterday but now every gear is like it’s drive. Pulled the pan off and linkage shifts okay. Not too sure where to go from here if anyone has any ideas?
It drove fine yesterday but now every gear is like it’s drive. Pulled the pan off and linkage shifts okay. Not too sure where to go from here if anyone has any ideas?
08-14-2022, 06:34 PM
#2
Supreme Member
Join Date: Jul 2006
Location: 212 is up in this Bit@#
Posts: 2,763
Received 739 Likes
on
565 Posts
Car: Resto-Mod 1987 IROC-Z Clone
Engine: Alky fed L92 Vortec Twin-Turbo 6.8L
Transmission: My own built/ design 4L80M
Axle/Gears: Custom 12 bolt (4.10:1)
Re: Every gear goes forward like it’s in drive
Do you mean that when the Gear Selector is in:
-Park
-Reverse
-Neutral
That the Transmission operates as if the Gear Selector is in OD?
Or...
Do you mean that when the Gear Selector is in D1, D2, and D3...
That the Transmission operates as if the Gear Selector is in OD?
-Park
-Reverse
-Neutral
That the Transmission operates as if the Gear Selector is in OD?
Or...
Do you mean that when the Gear Selector is in D1, D2, and D3...
That the Transmission operates as if the Gear Selector is in OD?
08-14-2022, 07:54 PM
#3
Junior Member
Thread Starter
Join Date: Aug 2022
Posts: 2
Likes: 0
Received 0 Likes
on
0 Posts
Re: Every gear goes forward like it’s in drive
Do you mean that when the Gear Selector is in:
-Park
-Reverse
-Neutral
That the Transmission operates as if the Gear Selector is in OD?
Or...
Do you mean that when the Gear Selector is in D1, D2, and D3...
That the Transmission operates as if the Gear Selector is in OD?
-Park
-Reverse
-Neutral
That the Transmission operates as if the Gear Selector is in OD?
Or...
Do you mean that when the Gear Selector is in D1, D2, and D3...
That the Transmission operates as if the Gear Selector is in OD?
08-14-2022, 09:04 PM
#4
Supreme Member
iTrader: (1)
Join Date: Sep 2005
Posts: 26,117
Received 1,688 Likes
on
1,283 Posts
Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: Every gear goes forward like it’s in drive
Help us understand here:
What position is the actual transmission shift linkage in when this is going on? As in, you put the "handle" inside the car into whatever, and the transmission just carries on as if you hadn't done a damn thing?
Afterwards, when you got up under it and watched the transmission linkage as your assistant moved the handle from here to there, what did you see? Did you see the linkage go from D to R to P to L to whatever, or, ... what?
What position is the actual transmission shift linkage in when this is going on? As in, you put the "handle" inside the car into whatever, and the transmission just carries on as if you hadn't done a damn thing?
Afterwards, when you got up under it and watched the transmission linkage as your assistant moved the handle from here to there, what did you see? Did you see the linkage go from D to R to P to L to whatever, or, ... what?
The following users liked this post:
T.L. (08-15-2022)
08-14-2022, 09:26 PM
#5
Supreme Member
Join Date: Jul 2006
Location: 212 is up in this Bit@#
Posts: 2,763
Received 739 Likes
on
565 Posts
Car: Resto-Mod 1987 IROC-Z Clone
Engine: Alky fed L92 Vortec Twin-Turbo 6.8L
Transmission: My own built/ design 4L80M
Axle/Gears: Custom 12 bolt (4.10:1)
Re: Every gear goes forward like it’s in drive
If the Linkage is operating properly...
Either the Manual Valve of the Valve-Body, is disconnected from the Linkage, or the Manual Valve is Broken, or the Valve-Body has a Cross-Leak/ Damage.
Either the Manual Valve of the Valve-Body, is disconnected from the Linkage, or the Manual Valve is Broken, or the Valve-Body has a Cross-Leak/ Damage.
08-15-2022, 05:15 AM
#6
Re: Every gear goes forward like it’s in drive
Too many neutral drops, or aggressively rocking a car stuck in snow, will do that. "Rocking" the car will sometimes break them loose again. It should be a death sentence for a 700R4 but I had one do that, and it went 7 more years of daily driving after getting it unjammed.
08-15-2022, 02:45 PM
#7
Senior Member
Join Date: Mar 2003
Location: vacaville,ca
Posts: 847
Likes: 0
Received 3 Likes
on
3 Posts
Car: 1988 camaro z28,1997 camaro lt1
Engine: 355 afr 195 heads,tpis big mouth
Transmission: 700r-4 built by me 3-4 z pack
Axle/Gears: 3.42
Re: Every gear goes forward like it’s in drive
Trending Topics
08-18-2022, 11:27 AM
#9
Supreme Member
iTrader: (2)
Join Date: Jan 2005
Location: Hurst, Texas
Posts: 10,037
Received 394 Likes
on
336 Posts
Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
Re: Every gear goes forward like it’s in drive
The 4L60E in my 99 Tahoe failed in this manner. It welded clutches together when it started to slip. ALL gears were forward.
Thread
Thread Starter
Forum
Replies
Last Post
kissedin
Transmissions and Drivetrain
6
09-02-2012 10:08 AM
crazeinc
Transmissions and Drivetrain
1
10-05-2002 07:48 AM