97 Dodge Ram surging and jerking - Dodge Cummins Diesel Forum
94-98 Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect...NO ADVERTISING

 1Likes
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 37 (permalink) Old 01-16-2020, 02:03 PM Thread Starter
Newbie
 
Join Date: May 2019
Posts: 41
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
97 Dodge Ram surging and jerking

Hello diesel enthusiasts I made a post a while back about my truck surging and jumping. I was instructed to pursue my fuel system so I deleted the preheated/screen added a sump 1/2” line from tank to lift pump upgraded the spring in lift pump to a 975-1 valve spring added a 1/2” big line kit from fuel filter to ip new Cummins fuel filter and torx adjustable ofv. IT STILL SURGES took it to a diesel mechanic he said it’s probably the ip sent it off to a Bosch shop to balance/time/test etc. it tested perfect. Put back on STILL SURGES I was running ddp stage 1 injectors but had my original Bosch injectors had those tested at Bosch they tested fine so reinstalled those. STILL SURGES. yesterday pulling my 40’ 5th wheel I can give it mild throttle until it surges then you gotta give it full throttle to keep it from snapping the frame in half. I made an astounding realization CRUISE CONTROL DOES NOT SURGE it’s not transmission/engine/fuel/turbo related it is the throttle linkage. After digging tsb 18-29-97 rev A addressed this part #05011726AA here’s the problem that throttle linkage kit is discontinued and you can order individual parts only. This is a manual truck nv4500 no TPS I have an appointment Tuesday do diagnose the problem with dodge/ram The issue is it doesn’t surge unloaded only with a trailer behind it. Let’s hear some suggestions about how to diagnose and fix this problem. After about $4-5,000 diagnosing this Issue I’m pretty certain I found it so let’s try to fix this lovely truck. Thank you to everyone involved in helping trust me I’ve been awake at 2am wondering what it could be and every day driving it for a year you cannot imagine how important this is to me. Thank you for your time

12vrattlebox is offline  
Sponsored Links
Advertisement
 
post #2 of 37 (permalink) Old 01-17-2020, 10:49 AM
Diesel Freak
 
Join Date: Oct 2007
Location: Phoenix, AZ
Posts: 686
Thanks: 22
Thanked 49 Times in 48 Posts
iTrader Score: 0 reviews
There are two springs attached to the governor arm and a bracket attached to the timing pin cap. If they are compromised you'll get governor bounce which can make the truck surge and buck hard especially on the freeway. Had that happen myself.

Sent from my LG-H932 using Tapatalk

91.0 D250 A727 w/ 216k on the clock. i/p replaced 20k ago, lift pump 2k, 1 turn fuel, 2 turns smoke, ground & polished AFC pin, timing bump, 366 spring 94 2500 4x4, 49k miles, Farrell Diesel rebuilt 215 pump, PDD 5x12 SAC, SXE 362, built 47RH
hemirunner426 is offline  
post #3 of 37 (permalink) Old 01-17-2020, 11:26 AM
Diesel Head
 
GAmes's Avatar
 
Join Date: Sep 2009
Location: Killeen, TX
Posts: 16,776
Thanks: 153
Thanked 1,796 Times in 1,578 Posts
iTrader Score: 7 reviews
You are going to kick yourself if all you need is a spring (or two).
Attached Thumbnails
Click image for larger version

Name:	97 -98 spring.JPG
Views:	29
Size:	835.9 KB
ID:	865401  

97 3500, 2 WD, G56, slightly bombed, 1.3 million miles with un-additized diesel fuel. Started the second million on 8/24/13
If you are lucky enough to be in Texas, you are lucky enough.
GAmes is offline  
Sponsored Links
Advertisement
 
post #4 of 37 (permalink) Old 01-17-2020, 11:54 AM
Cummins Fanatic
 
ehenle4188's Avatar
 
Join Date: Feb 2015
Posts: 144
Thanks: 0
Thanked 4 Times in 4 Posts
iTrader Score: 0 reviews
Yup had the same issue. Mine was the outside spring. Like a $5 fix

97 cummins 4x4 nv4500
california truck
FP, boost, pyro
ehenle4188 is offline  
post #5 of 37 (permalink) Old 01-17-2020, 12:19 PM Thread Starter
Newbie
 
Join Date: May 2019
Posts: 41
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
Quote:
Originally Posted by GAmes View Post
You are going to kick yourself if all you need is a spring (or two).
I will but I’ll also have a really nice 12 valve with 90,000 miles that’s been went over with a fine toothed comb by some serious professionals. So I’ll be happy to not have to buy a new injection pump. Saving that much compounds are becoming more reasonable
12vrattlebox is offline  
post #6 of 37 (permalink) Old 01-17-2020, 08:02 PM
Diesel Freak
 
Join Date: Oct 2007
Location: Phoenix, AZ
Posts: 686
Thanks: 22
Thanked 49 Times in 48 Posts
iTrader Score: 0 reviews
Quote:
Originally Posted by 12vrattlebox View Post
I will but Iíll also have a really nice 12 valve with 90,000 miles thatís been went over with a fine toothed comb by some serious professionals. So Iíll be happy to not have to buy a new injection pump. Saving that much compounds are becoming more reasonable
I seen a lot of "serious professions" granny shifting not double clutching like they should.

In all seriousness, some of the most simple things are overlooked by the best of the best.


Sent from my LG-H932 using Tapatalk

91.0 D250 A727 w/ 216k on the clock. i/p replaced 20k ago, lift pump 2k, 1 turn fuel, 2 turns smoke, ground & polished AFC pin, timing bump, 366 spring 94 2500 4x4, 49k miles, Farrell Diesel rebuilt 215 pump, PDD 5x12 SAC, SXE 362, built 47RH
hemirunner426 is offline  
post #7 of 37 (permalink) Old 01-17-2020, 10:23 PM Thread Starter
Newbie
 
Join Date: May 2019
Posts: 41
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
Quote:
Originally Posted by hemirunner426 View Post
Quote:
Originally Posted by 12vrattlebox View Post
I will but I’ll also have a really nice 12 valve with 90,000 miles that’s been went over with a fine toothed comb by some serious professionals. So I’ll be happy to not have to buy a new injection pump. Saving that much compounds are becoming more reasonable
I seen a lot of "serious professions" granny shifting not double clutching like they should.

In all seriousness, some of the most simple things are overlooked by the best of the best.


Sent from my LG-H932 using Tapatalk
Oh trust me I’ve been pretty amazed how abundantly stupid some diesel mechanics are but also learned a lot. I’ve found if they can’t throw a part at it and make an easy $1,000 they won’t touch it. $300 diagnosis fee to tell me they think I could put a new lift pump on. Well no ..... I’ve been very amazed with Bosch injection shops that is an art to set a pump just perfect. The 12 valve purs like a kitten valve lash is all dead on and fuel pressure holds 25psi WOT with cruise control on it pulls 15,000 like it’s not even there in 4th at 25psi of boost and no smoke. Touch the gas pedal and all hell breaks loose 🤪 don’t put in baby’s in the cab
24hrsparkey likes this.
12vrattlebox is offline  
post #8 of 37 (permalink) Old 01-17-2020, 10:33 PM Thread Starter
Newbie
 
Join Date: May 2019
Posts: 41
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
Quote:
Originally Posted by ehenle4188 View Post
Yup had the same issue. Mine was the outside spring. Like a $5 fix
I’ll keep that in mind that the springs can cause it. I haven’t dug into it yet. It’s going to Dodge Ram Tuesday since they have all the parts necessary I’ll see what they say and let you know
12vrattlebox is offline  
post #9 of 37 (permalink) Old 01-17-2020, 10:36 PM Thread Starter
Newbie
 
Join Date: May 2019
Posts: 41
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
Quote:
Originally Posted by hemirunner426 View Post
There are two springs attached to the governor arm and a bracket attached to the timing pin cap. If they are compromised you'll get governor bounce which can make the truck surge and buck hard especially on the freeway. Had that happen myself.

Sent from my LG-H932 using Tapatalk
Ok I’ll look into those I haven’t looked into it yet. I’m taking it to Dodge Ram Tuesday so I’m interested in what they say it is.
12vrattlebox is offline  
post #10 of 37 (permalink) Old 01-22-2020, 02:46 PM
Cummins Nut
 
ekvhekvh's Avatar
 
Join Date: Oct 2017
Posts: 470
Thanks: 9
Thanked 10 Times in 10 Posts
iTrader Score: 0 reviews
It got warm enough to take a look at my truck for the above mentioned springs. Since installing a gsk, mine is a bit slow to come down from above 2000 rpm.

Mine has just one spring, unlike the above photo. Looking at the manual’s drawings, it only shows one spring. Is this a “try it, you’ll like it,” proposition?

96 Ram 2500 4x4 automatic. Engine number: ??? Missing.
ekvhekvh is offline  
post #11 of 37 (permalink) Old 01-22-2020, 04:08 PM
Diesel Head
 
GAmes's Avatar
 
Join Date: Sep 2009
Location: Killeen, TX
Posts: 16,776
Thanks: 153
Thanked 1,796 Times in 1,578 Posts
iTrader Score: 7 reviews
The photo is a '97, '98 pump. 94-96 only came with one lower spring. It attaches to a bracket on the p-pump support on the forward end. Actually it is a double spring if you look close. I suppose it is possible that one of the elements has broken.
Attached Thumbnails
Click image for larger version

Name:	94-95-96 spring.JPG
Views:	21
Size:	791.4 KB
ID:	865691  

97 3500, 2 WD, G56, slightly bombed, 1.3 million miles with un-additized diesel fuel. Started the second million on 8/24/13
If you are lucky enough to be in Texas, you are lucky enough.

Last edited by GAmes; 01-22-2020 at 04:10 PM.
GAmes is offline  
post #12 of 37 (permalink) Old 01-22-2020, 04:45 PM
Cummins Nut
 
ekvhekvh's Avatar
 
Join Date: Oct 2017
Posts: 470
Thanks: 9
Thanked 10 Times in 10 Posts
iTrader Score: 0 reviews
Mine looks intact, thanks.

96 Ram 2500 4x4 automatic. Engine number: ??? Missing.
ekvhekvh is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Dodge Cummins Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome