MoparFins

Please login or register.

Login with username, password and session length
Advanced search  

News:

We changed servers, which is good, and lost all passwords, which is bad. See above.

Pages: [1]   Go Down

Author Topic: transmossion wont shift  (Read 592 times)

Anthony Prescott

  • Full Member
  • ***
  • Karma: +0/-0
  • Posts: 104
    • View Profile
transmossion wont shift
« on: September 28, 2010, 08:10:55 PM »

ok... 91 dodge ram, 360ci and the overdrive trans. every so often, only after driving for a few hours, the tranny womt shift out of first unless i put it in neutral and rev the crap out of it. then its fine for a few more hours. it does it also after driving for a while if i shift from reverse to drive. also, it will shift on its own from drive to 2nd and i have to rev it again. whats up with it??
Logged
If it aint broke, dont fix it.

Jason Goldsack

  • Hero Member
  • *****
  • Karma: +0/-0
  • Posts: 990
    • View Profile
transmossion wont shift
« Reply #1 on: September 29, 2010, 03:39:35 AM »

When is the last time you had the fluid/filter changed?

Logged
Jason

(Eileen)1965 Chrysler Windsor, 361/727/2.76 16.49 @ 86 mph

Anthony Prescott

  • Full Member
  • ***
  • Karma: +0/-0
  • Posts: 104
    • View Profile
transmossion wont shift
« Reply #2 on: September 29, 2010, 09:07:32 AM »

i did it about 2 months ago. it helped a bit because it started doing this a lot when i bought it. changed the filter and it was better, not great, but better. maybe i need to flush it out.
Logged
If it aint broke, dont fix it.

Steve

  • Administrator
  • Hero Member
  • *****
  • Karma: +1/-0
  • Posts: 8653
    • View Profile
transmossion wont shift
« Reply #3 on: September 29, 2010, 09:14:58 AM »

Sounds like the valve body may be contaminated.  Best thing to do is remove it, put it on a clean table, use a large towel or shirt so the balls don't roll around, and take the top off.  Carb cleaner and some air ought to fix it.
 
The other possibility is the govonor is stuck.  That isn't so easy to fix.  Tail shaft has to come off.
 
518's, which is what you have, are nothing more than glorified 727's.  They're pretty simple, unlike a Turbo 350
Logged
Favorite Expression. . . Damned Kids.  Lots of projects.  Donations accepted

Guests

  • Guest
transmossion wont shift
« Reply #4 on: September 29, 2010, 04:21:13 PM »

Wether it is the throttle body or governor, the revving increases the line pressure enough to overcome the sticking for a little bit. Remember, the throttle body and governor both are precision machined parts and all it takes is a small bit of dirt, clutch or steel shaving to jam a valve into a certain location. Even clean fluid can have a couple chunks of crud the size of half a pin head floating around in it. Dropping the valve body and tail shaft for the governor isn't that difficult a job. A little messy, sure, but not that difficult to do.
Logged

Anthony Prescott

  • Full Member
  • ***
  • Karma: +0/-0
  • Posts: 104
    • View Profile
transmossion wont shift
« Reply #5 on: September 29, 2010, 07:20:24 PM »

k. cool thanks.
Logged
If it aint broke, dont fix it.

Jason Goldsack

  • Hero Member
  • *****
  • Karma: +0/-0
  • Posts: 990
    • View Profile
transmossion wont shift
« Reply #6 on: September 30, 2010, 03:10:28 AM »

The other problem will be that the converter will still be full of contaminated fluid. I went to an oil change place and had the entire system pumped and replaced.

They hooked up to a cooler line and the converter draws in the new fluid and pushes it through the system while pushing out the old fluid out the other line into a holding tank.

It fixed the slipping problem I had with the Sebring.. I couldn't believe the difference.

That might be an option instead of dropping the valve body.


Logged
Jason

(Eileen)1965 Chrysler Windsor, 361/727/2.76 16.49 @ 86 mph

Steve

  • Administrator
  • Hero Member
  • *****
  • Karma: +1/-0
  • Posts: 8653
    • View Profile
transmossion wont shift
« Reply #7 on: September 30, 2010, 05:48:21 AM »

Those converters have a drain in them.
 
But a very good point
Logged
Favorite Expression. . . Damned Kids.  Lots of projects.  Donations accepted
Pages: [1]   Go Up
 

© 2008-2014 Steve Hobby • © 2015 Allpar, LLC