Previous Thread
Next Thread
Print Thread
Page 1 of 2 1 2
727 HELP just stopped moving in forward and reverse #2113669
07/19/16 11:02 PM
07/19/16 11:02 PM
Joined: Jan 2003
Posts: 3,103
Phila Pa
S
scatpacktom Offline OP
master
scatpacktom  Offline OP
master
S

Joined: Jan 2003
Posts: 3,103
Phila Pa
Car has been in storage for at least 5 years. Drove it in the trailer and then drove it back out. I monkeyed with the carb for a while and washed it. Went to put it back in the trailer. I backed up 20 feet and threw it into "D" and nothing happened. It has no forward and no reverse, no noise, no shutter, nothing to indicate a problem.

I pulled the pan and the fluid is as clean as it can be. The bands seem to be properly adjusted, no struts in the pan. Of course all of the shift linkage does what it is supposed to do.

Any ideas?

Re: 727 HELP just stopped moving in forward and reverse [Re: scatpacktom] #2113672
07/19/16 11:07 PM
07/19/16 11:07 PM
Joined: Jan 2003
Posts: 29,648
Hamtramck, PA
Alaskan_TA Offline
Fluffy Balladeer
Alaskan_TA  Offline
Fluffy Balladeer

Joined: Jan 2003
Posts: 29,648
Hamtramck, PA
Did someone steal the drive shaft while you were washing the car? ;-)

Re: 727 HELP just stopped moving in forward and reverse [Re: Alaskan_TA] #2113675
07/19/16 11:09 PM
07/19/16 11:09 PM
Joined: May 2003
Posts: 96,649
On The Boat, On The Lake, Wa. ...
amxautox Offline
Still Retired. Still Posting on Moparts. A Lot.
amxautox  Offline
Still Retired. Still Posting on Moparts. A Lot.

Joined: May 2003
Posts: 96,649
On The Boat, On The Lake, Wa. ...
No, but they probably jacked up the car and put blocks under the springs, so the tires spin.


Tom

"Everyone should believe in something; I believe I'll go fishing."

-Henry David Thoreau

Men and fish are alike. They both get into trouble when they open their mouths

author unknown

Re: 727 HELP just stopped moving in forward and reverse [Re: scatpacktom] #2113714
07/20/16 12:10 AM
07/20/16 12:10 AM
Joined: Jan 2003
Posts: 1,798
McGregor,Iowa 52157
5
500ciDuster Offline
top fuel
500ciDuster  Offline
top fuel
5

Joined: Jan 2003
Posts: 1,798
McGregor,Iowa 52157
Pump ears broke off where the torque convertor engages maybe

Re: 727 HELP just stopped moving in forward and reverse [Re: scatpacktom] #2113715
07/20/16 12:10 AM
07/20/16 12:10 AM
Joined: Jun 2006
Posts: 916
MB,CAN
PC-CHARGER Offline
super stock
PC-CHARGER  Offline
super stock

Joined: Jun 2006
Posts: 916
MB,CAN
If you can, stick a gauge on the center tap on the passenger side of the trans and check for pressure. I suspect the lugs on the pump gear have sheared off and you will se little to no pressure at that port.

Re: 727 HELP just stopped moving in forward and reverse [Re: scatpacktom] #2113716
07/20/16 12:11 AM
07/20/16 12:11 AM
Joined: Jan 2003
Posts: 15,194
Omaha Ne
T
TJP Offline
I Live Here
TJP  Offline
I Live Here
T

Joined: Jan 2003
Posts: 15,194
Omaha Ne
Did you by happen to check the fluid level before dropping the pan?? In Neutral ??? whistling

Re: 727 HELP just stopped moving in forward and reverse [Re: TJP] #2113732
07/20/16 12:29 AM
07/20/16 12:29 AM
Joined: Jan 2003
Posts: 3,103
Phila Pa
S
scatpacktom Offline OP
master
scatpacktom  Offline OP
master
S

Joined: Jan 2003
Posts: 3,103
Phila Pa
Yes fluid was clean and full. The trans has no leaks. It was the first thing I checked

Re: 727 HELP just stopped moving in forward and reverse [Re: scatpacktom] #2113868
07/20/16 10:35 AM
07/20/16 10:35 AM
Joined: Jan 2003
Posts: 3,103
Phila Pa
S
scatpacktom Offline OP
master
scatpacktom  Offline OP
master
S

Joined: Jan 2003
Posts: 3,103
Phila Pa
I guess I'll have to pull it out. As a repair shop owner I hear all the time "but it just worked fine" and I have to explain "but now it doesn't, so it is broke"

What strikes me as odd is that just as fast as I went from reverse to forward it failed with no ill effects. Worked and then it didn't. My first thought was the converter or the pump but then I thought "naaahhh, what are the chances of that?"

I can see a warranty sticker on the converter so I'm betting on it being a cheap pos reman unit. That's my bet. I'll soon find out

Re: 727 HELP just stopped moving in forward and reverse [Re: scatpacktom] #2113919
07/20/16 11:39 AM
07/20/16 11:39 AM
Joined: Jan 2003
Posts: 74,907
U.S.S.A.
JohnRR Offline
I Win
JohnRR  Offline
I Win

Joined: Jan 2003
Posts: 74,907
U.S.S.A.
Pump ears/converter snout don't usually break on a 727 so it'll be interesting to see what the cause is ?

But no forward and no reverse means you either lost pressure pressure or a shaft broke ?


running up my post count some more .
Re: 727 HELP just stopped moving in forward and reverse [Re: scatpacktom] #2113989
07/20/16 01:00 PM
07/20/16 01:00 PM
Joined: Jan 2004
Posts: 1,248
North Carolina
4
469runner Offline
pro stock
469runner  Offline
pro stock
4

Joined: Jan 2004
Posts: 1,248
North Carolina
I know this is simple, but check your linkage.

Re: 727 HELP just stopped moving in forward and reverse [Re: JohnRR] #2114034
07/20/16 01:52 PM
07/20/16 01:52 PM
Joined: Jun 2006
Posts: 916
MB,CAN
PC-CHARGER Offline
super stock
PC-CHARGER  Offline
super stock

Joined: Jun 2006
Posts: 916
MB,CAN
Originally Posted By JohnRR
Pump ears/converter snout don't usually break on a 727 so it'll be interesting to see what the cause is ?

But no forward and no reverse means you either lost pressure pressure or a shaft broke ?


You're right that it is not a common failure but it does happen. I've repaired two 727's with broken pump gear lugs that I recall over the years. This is the reason for the max lug pump gears sold be vendors. 904's are more likely to break the converter snout.

Re: 727 HELP just stopped moving in forward and reverse [Re: scatpacktom] #2114038
07/20/16 01:56 PM
07/20/16 01:56 PM
Joined: Jan 2003
Posts: 3,103
Phila Pa
S
scatpacktom Offline OP
master
scatpacktom  Offline OP
master
S

Joined: Jan 2003
Posts: 3,103
Phila Pa
I have come to learn that transmissions with a trans go shift kit boost pressure to 350 to 400 in reverse and can lead to pump/converter failure. I have no way of knowing if this trans had a shift kit installed or not. Not by looking at it anyway.

Re: 727 HELP just stopped moving in forward and reverse [Re: JohnRR] #2114118
07/20/16 03:46 PM
07/20/16 03:46 PM
Joined: Jan 2003
Posts: 25,618
Rio Linda, CA
John_Kunkel Offline
Too Many Posts
John_Kunkel  Offline
Too Many Posts

Joined: Jan 2003
Posts: 25,618
Rio Linda, CA
Originally Posted By JohnRR
Pump ears/converter snout don't usually break on a 727


More common than you'd think, lots have happened right here on this board.

Another TF weak link.


The INTERNET, the MISinformation superhighway
Re: 727 HELP just stopped moving in forward and reverse [Re: scatpacktom] #2114180
07/20/16 04:51 PM
07/20/16 04:51 PM
Joined: May 2008
Posts: 5,399
Aurora, Colorado
451Mopar Offline
master
451Mopar  Offline
master

Joined: May 2008
Posts: 5,399
Aurora, Colorado
Did you check the rear servo when the pan was off?
If not the servo (about the only fix you could do with the trans in the car), you will need to remove the trans to check the pump/converter, and rear clutch pack.

Re: 727 HELP just stopped moving in forward and reverse [Re: scatpacktom] #2114280
07/20/16 07:03 PM
07/20/16 07:03 PM
Joined: Jan 2003
Posts: 3,103
Phila Pa
S
scatpacktom Offline OP
master
scatpacktom  Offline OP
master
S

Joined: Jan 2003
Posts: 3,103
Phila Pa
Check the servo for cracks? Do they crack in a way that you see it without pulling it out and holding it in your hand?

Re: 727 HELP just stopped moving in forward and reverse [Re: scatpacktom] #2114628
07/21/16 10:47 AM
07/21/16 10:47 AM
Joined: Sep 2003
Posts: 19,239
north of coder
moparx Offline
"Butt Crack Bob"
moparx  Offline
"Butt Crack Bob"

Joined: Sep 2003
Posts: 19,239
north of coder
when you said the shift linkage does what it's supposed to do, did you verify the manual linkage actually moved the manual control valve in the valve body when the pan was/is off ? i have seen rooster combs break the weld and cause the symptoms you describe. if you already did this check, disregard this comment.
beer

Re: 727 HELP just stopped moving in forward and reverse [Re: scatpacktom] #2114690
07/21/16 12:01 PM
07/21/16 12:01 PM
Joined: Jan 2003
Posts: 3,103
Phila Pa
S
scatpacktom Offline OP
master
scatpacktom  Offline OP
master
S

Joined: Jan 2003
Posts: 3,103
Phila Pa
I still have the pan off and I will scrutinize that action but I do know this... the car will go in and out of park.

Re: 727 HELP just stopped moving in forward and reverse [Re: scatpacktom] #2115595
07/22/16 03:53 PM
07/22/16 03:53 PM
Joined: Jan 2003
Posts: 25,618
Rio Linda, CA
John_Kunkel Offline
Too Many Posts
John_Kunkel  Offline
Too Many Posts

Joined: Jan 2003
Posts: 25,618
Rio Linda, CA

A faulty rooster comb will have lost motion (slop) between the detents when operating the shift lever by hand.

A faulty rear servo won't prevent the car from moving forward in Drive.


The INTERNET, the MISinformation superhighway
Re: 727 HELP just stopped moving in forward and reverse [Re: scatpacktom] #2115641
07/22/16 05:23 PM
07/22/16 05:23 PM
Joined: Jan 2003
Posts: 14,479
So. Burlington, Vt.
F
fast68plymouth Offline
I Live Here
fast68plymouth  Offline
I Live Here
F

Joined: Jan 2003
Posts: 14,479
So. Burlington, Vt.
One of the "advantages" of getting older is you have less energy to try and fix things right away...... And as a result you get to ponder about them more before any actual work begins.

I don't know if this would be a valid test or not, but if the trans still had the pan on and fluid in it, if the pump ears were busted, then with the motor running and the trans in neutral, the level on the stick should still read way high, like if it was in park because the pump wouldn't be filling the converter. Yes??

Which made me wonder, is it possible the converter fill valve could be stuck and it's just "empty", making it so the car wouldn't move?


68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
Re: 727 HELP just stopped moving in forward and reverse [Re: scatpacktom] #2115770
07/22/16 08:25 PM
07/22/16 08:25 PM
Joined: Jan 2003
Posts: 3,103
Phila Pa
S
scatpacktom Offline OP
master
scatpacktom  Offline OP
master
S

Joined: Jan 2003
Posts: 3,103
Phila Pa
Should be easy from this point...if the fluid that came out wont go back in and be at the same level it was, it has to be the pump/converter. I'm sure that is what it will be

Page 1 of 2 1 2






Powered by UBB.threads™ PHP Forum Software 7.7.1