Trans Convertor shifting in and out ???
#1
Trans Convertor shifting in and out ???
I have a 94 Diesel Ram 3500 Auto with over drive... I notice the tach jumping up a few hundred rpm's while driving down the road. I can set the cruise at 60 mph on a flat road and once in awhile the tach will jump up and down... Iam pretty sure its the convertor kicking in and out , but why ???? Its not under any load driving down the road ..and it dont do it all the time .
#2
Registered User
A lot of people have posted about this, I know because mine started doing the same thing and I searched.
The general concensus is that the grounds are faulty. This weekend I'm going to go from batteries to tranny and clean all the electrical connections.
The general concensus is that the grounds are faulty. This weekend I'm going to go from batteries to tranny and clean all the electrical connections.
#4
Registered User
Not really. It shifts less but still does it between 45 and 50 on average traffic kind of driving. on acceleration to highway speeds it doesn't do it anymore though.
#5
Registered User
Join Date: Jul 2006
Location: Los Angeles, CA
Posts: 440
Likes: 0
Received 0 Likes
on
0 Posts
My '01 was doing the same thing and I reset the APPS, and the problem went away. Read my earlier post:
https://www.dieseltruckresource.com/...d.php?t=111930
To reset the APPS:
This procedure has shown to help 24 valve ISB engines. It is basically teaching the fly
by wire accelerator on these trucks to reread the position of the pedal and it's limits.
Most complaints this will help with is poor acceleration, improper shifting, bucking in 5
and 6 speeds. Has been known to increase fuel mileage in some instances.
1. Set parking brake
2. Disconnect negative battery cables on both batteries
3. Turn ignition key to run(to drain any remaining capacitors)
4. Let truck sit for 30 minutes( this is the recommended minimum)
5. Return ignition to OFF position
6. Reconnect both batteries and secure, not a timed event
7. Turn key to run position(not start) and depress accelerator pedal slowly all the way
to the floor
8. Allow pedal to return to top position slowly
9. Turn ignition switch OFF
10.Release parking brake
https://www.dieseltruckresource.com/...d.php?t=111930
To reset the APPS:
This procedure has shown to help 24 valve ISB engines. It is basically teaching the fly
by wire accelerator on these trucks to reread the position of the pedal and it's limits.
Most complaints this will help with is poor acceleration, improper shifting, bucking in 5
and 6 speeds. Has been known to increase fuel mileage in some instances.
1. Set parking brake
2. Disconnect negative battery cables on both batteries
3. Turn ignition key to run(to drain any remaining capacitors)
4. Let truck sit for 30 minutes( this is the recommended minimum)
5. Return ignition to OFF position
6. Reconnect both batteries and secure, not a timed event
7. Turn key to run position(not start) and depress accelerator pedal slowly all the way
to the floor
8. Allow pedal to return to top position slowly
9. Turn ignition switch OFF
10.Release parking brake
#6
Registered User
Join Date: May 2006
Location: fanning springs fl
Posts: 26
Likes: 0
Received 0 Likes
on
0 Posts
check out the throttle position sensor, also the speed sensor on trans. your 94 should have both. there is a lot of info here on site. do a search.
frank
frank
Thread
Thread Starter
Forum
Replies
Last Post
nasty01cummims
24 Valve Engine and Drivetrain
4
09-05-2009 10:38 PM
Rollin' Smoke
3rd Gen Engine and Drivetrain -> 2003-2007
18
06-16-2007 09:58 PM
Mark Thomas
3rd Gen High Performance and Accessories (5.9L Only)
6
08-18-2004 10:12 PM