Starting problem - Dodge Cummins Diesel Forum
98.5-02 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 22 (permalink) Old 07-09-2019, 07:45 PM Thread Starter
Newbie
 
Join Date: Mar 2019
Location: Maysville, Ga
Posts: 39
Thanks: 2
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
Starting problem

Hi all, I’ve recently been having a little trouble starting my 2001 cummins 3500. It’s not consistent so it’s hard to explain but basically it stutters to start. Most of the time I have to crank for a couple seconds, stop, crank again, then it starts easy. It only happens when the motor is hot and has been ran within the last couple hours.

This may or may not be the problem but sometimes I turn the a/c blower off and turn the key without cranking, turn off, turn back on, wait to start, then crank and it works. So it could be an a/c thing (which sounds like a long shot in my opinion) or a relay thing.

I am far from a mechanic so I have no idea where to start. I took it to my diesel mechanic and he couldn’t figure it out.

Other than the hesitation at the start it runs fine


2001 Ram 3500 DRW 24v, 4wd, 2.5 Level, 4" Straight Pipe/ Axle Dump, Banks High Ram/ Triple Pillar gauges, New vp44, 200,***
Dodge Jr. is offline  
Sponsored Links
Advertisement
 
post #2 of 22 (permalink) Old 07-10-2019, 02:19 AM
Diesel Head

 
Join Date: Nov 2010
Location: Yuba City, ca
Posts: 17,658
Thanks: 149
Thanked 1,397 Times in 1,328 Posts
iTrader Score: 0 reviews
What lift pump is on it and what is the pressure?

99 2500, Quad cab, 4x4 47RE, BD pressure lock on it, small BD 90/140 chip on the VP 44 connection plug, 17" 3rd gen wheels. 3.55 diffs. Ruenell front bumper and warn winch, Rancho adj shocks. 663k miles.
bigfish95971 is offline  
post #3 of 22 (permalink) Old 07-10-2019, 08:06 AM
Diesel Head
 
Stormin08's Avatar
 
Join Date: Feb 2014
Location: Lake Charles La. / St. Louis Mo.
Posts: 5,794
Thanks: 548
Thanked 576 Times in 526 Posts
iTrader Score: 0 reviews
the key on, then off, then crank issue is odd...
so my question is this....

does the WTS light flash when youturn the key to on ? even when hot temps are present...it should flicker immediately when cycle the key to ON.

that flicker indicates ecm bootup.

02 Sport / 47re / 4" MBRP TBE / DAP 75hp sticks/ HX35W / GDP FUEL BOSS / DDRP02 / 3rd gen brakes / 4th gen steering / 2" Thuren / MC ARMS / 5100's /285/75/17
Stormin08 is offline  
Sponsored Links
Advertisement
 
post #4 of 22 (permalink) Old 07-11-2019, 10:40 AM Thread Starter
Newbie
 
Join Date: Mar 2019
Location: Maysville, Ga
Posts: 39
Thanks: 2
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
Lift pump is running 15 psi so that should not be the problem.

The wts does not flicker, it is a solid light then will turn off when ready. I’ve never heard of it flickering.

I do have a new injection pump so it may need some adjusting or I might be getting some air in an injector. Like I said. It runs fine once it ya started but it definitely struggles on hot starts. I think when I’m turning the key on and off then back on it’s giving it a little for fuel to start it

2001 Ram 3500 DRW 24v, 4wd, 2.5 Level, 4" Straight Pipe/ Axle Dump, Banks High Ram/ Triple Pillar gauges, New vp44, 200,***
Dodge Jr. is offline  
post #5 of 22 (permalink) Old 07-11-2019, 06:07 PM
Diesel Head

 
Join Date: Nov 2010
Location: Yuba City, ca
Posts: 17,658
Thanks: 149
Thanked 1,397 Times in 1,328 Posts
iTrader Score: 0 reviews
Don't play with the key, just see how it acts under normal start conditions. By flicker he means it should come on for just a second if already warm.
Non or hesitation starting when hot is not commonly related to an air leak in the system, it is more common when cold. But check all the banjo joints for tight especially the one on back of the head. Behavior like that is often fuel pressure too high shutting of a valve in the VP, but 15 lb should not cause that issue, it is usually around 20lb or more. When starting don't do the key more than once or push the throttle. In warm climate or when warmed up just get in and turn the key to start and go. No wait to start or double tap or anything. It should start on the very first cylinder turn, not two or three cranks later.
Lift pump should not be running during cranking. If you bump the starter and release it should run 25 seconds or after truck starts

99 2500, Quad cab, 4x4 47RE, BD pressure lock on it, small BD 90/140 chip on the VP 44 connection plug, 17" 3rd gen wheels. 3.55 diffs. Ruenell front bumper and warn winch, Rancho adj shocks. 663k miles.
bigfish95971 is offline  
post #6 of 22 (permalink) Old 07-20-2019, 03:43 PM Thread Starter
Newbie
 
Join Date: Mar 2019
Location: Maysville, Ga
Posts: 39
Thanks: 2
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
Hey guys, so the problem has gotten worse. Every time I've ran the truck for a couple miles and let it sit for anything over 15 minutes it has a really hard time starting. I almost couldn’t get it to turn over earlier. I’m under the assumption that it is a fuel problem but I have no idea where to start.

The truck has a new vp44, lift pump is at 15psi, fuel filter has been replace, and I can’t find a leak anywhere. It now has a check engine light when I try and start it.

This problem started after the injection pump was replaced but it was rare and wasn’t anything more than a stutter. Now it barely can turn over after the truck has warmed up. Thanks in advance

2001 Ram 3500 DRW 24v, 4wd, 2.5 Level, 4" Straight Pipe/ Axle Dump, Banks High Ram/ Triple Pillar gauges, New vp44, 200,***
Dodge Jr. is offline  
post #7 of 22 (permalink) Old 07-20-2019, 08:43 PM
Diesel Head

 
Join Date: Nov 2010
Location: Yuba City, ca
Posts: 17,658
Thanks: 149
Thanked 1,397 Times in 1,328 Posts
iTrader Score: 0 reviews
" I almost couldn’t get it to turn over earlier" What do you mean by "turn over" Do you mean it wont fire or the starter is not cranking it over fast? Turn over or crank means one thing, fire, start, or run means other.

Slow crank will not start it. Usually dead batteries or cables, seldom the starter too.

99 2500, Quad cab, 4x4 47RE, BD pressure lock on it, small BD 90/140 chip on the VP 44 connection plug, 17" 3rd gen wheels. 3.55 diffs. Ruenell front bumper and warn winch, Rancho adj shocks. 663k miles.
bigfish95971 is offline  
post #8 of 22 (permalink) Old 07-20-2019, 09:15 PM Thread Starter
Newbie
 
Join Date: Mar 2019
Location: Maysville, Ga
Posts: 39
Thanks: 2
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
When I say it wasn’t turning over I meant it wouldn’t run. It took longer than normal to run. I can tell it’s not a battery problem.

Tomorrow I’m going to go through everything and make sure I don’t have a leak

2001 Ram 3500 DRW 24v, 4wd, 2.5 Level, 4" Straight Pipe/ Axle Dump, Banks High Ram/ Triple Pillar gauges, New vp44, 200,***
Dodge Jr. is offline  
post #9 of 22 (permalink) Old 07-21-2019, 01:15 AM
Diesel Freak
 
bwdt's Avatar
 
Join Date: May 2011
Posts: 889
Thanks: 9
Thanked 87 Times in 73 Posts
iTrader Score: 0 reviews
You have an air leak on the fuel return line. Park the truck on a slight down hill with the front of the truck pointing down. If the truck starts right up, you have a leak. Next part the truck with the front pointing up hill, and it will be hard to start. You can bump the starter, but do not let it crank, this will cause the fuel pump to run for about a minute, do this a couple of times and the truck should start right up.......AIR LEAK. To repair, check the banjo bolts to make sure they are tight, one on the injection pump and on the back of the head, also check to see that they are dry, no weeping. Also check the T fitting on the side of the block at the back of the engine for the same issues. The O-rings (rubber bushings) dry out and go bad. You can buy these from Cummins for about ten dollars each or you can buy them from Parker fittings who makes them for about fifty cents each.....I believe that they are 3/16 or 1/4 of an inch (cant remember) and are called Vibra loc. All you need are the bushings.

Extra note. If they want you to order a package of fifty or a hundred, ask them for some samples, I got mine for free.

2000, 2500 4X4 LB, Adrenalin 6X11 injectors, 62-68/12 FMW, 4" exhaust, 2012 T steering, Allison transmission, w/271 Transfer case, 19.5 wheels and tires, 3rd gen brakes, DT Radius Arms, Hamilton 188/208 cam, studs, 19.5-1 pistons, Dana 80, 60 Gal fuel tank, +.
bwdt is offline  
post #10 of 22 (permalink) Old 07-21-2019, 01:21 AM
Diesel Head
 
KATOOM's Avatar
 
Join Date: Jan 2006
Location: Northern California
Posts: 14,443
Thanks: 1,485
Thanked 2,606 Times in 2,101 Posts
iTrader Score: 0 reviews
What fuel pump do you have and how do you know its pumping 15 psi? Do you have gauges in the cab? If yes then what brand and how is the fuel pressure gauge plumbed in to the fuel line?

'01 2500 Sport 4x4 5spd w/Fastcoolers, Mag-Hytec, EZ, RV275's, 4" w/o muffler, South Bend, Steering brace, aFe, 2 lo kit, Isspro Boost, FP, and EGT on pillar, Westach Trans/Diff temp gauge in dash pod, Raptor 100 w/ 1/2" line, Pac Brake, Rancho 9000, 285's
KATOOM is offline  
post #11 of 22 (permalink) Old 07-21-2019, 01:34 AM
Diesel Head

 
Join Date: Nov 2010
Location: Yuba City, ca
Posts: 17,658
Thanks: 149
Thanked 1,397 Times in 1,328 Posts
iTrader Score: 0 reviews
BWDT, Air in return line is usually after several hours on a cold engine, not a truck that was just shut off and trying to start 15 minutes later. The OP said usually when already hot. So it does not sound like normal air leaks.
KATOOM likes this.

99 2500, Quad cab, 4x4 47RE, BD pressure lock on it, small BD 90/140 chip on the VP 44 connection plug, 17" 3rd gen wheels. 3.55 diffs. Ruenell front bumper and warn winch, Rancho adj shocks. 663k miles.
bigfish95971 is offline  
post #12 of 22 (permalink) Old 07-21-2019, 01:49 AM
Diesel Head
 
KATOOM's Avatar
 
Join Date: Jan 2006
Location: Northern California
Posts: 14,443
Thanks: 1,485
Thanked 2,606 Times in 2,101 Posts
iTrader Score: 0 reviews
Its not a fuel leak... The OP is experiencing a hot hard start but I cant say for sure why unless I know more about the fuel system and gauges.

'01 2500 Sport 4x4 5spd w/Fastcoolers, Mag-Hytec, EZ, RV275's, 4" w/o muffler, South Bend, Steering brace, aFe, 2 lo kit, Isspro Boost, FP, and EGT on pillar, Westach Trans/Diff temp gauge in dash pod, Raptor 100 w/ 1/2" line, Pac Brake, Rancho 9000, 285's
KATOOM 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