I got a 99 Dodge 3500 I use to haul our tractors with. The problem it's having right now is this: I go out to start it when it's cold, turn the key on, wait till the start light goes out, crank it over, starts right up. Then I drive it wherever I got to go, after it's fully warmed up I shut it off, then when I get back in it to go, it takes about 5 seconds of cranking before it will start. Normally hot or cold or anywhere in between it starts on the first lick. 239,000 on the ticker, fresh fuel filter and fuel, fresh injectors at 180ish, good lift pump pressure (12@3000rpm), as far as I know original injection pump. It is a daily driver. Once it does start hot or cold, it runs fine and does not seem to be down on power or anything else. What say ye diesel gurus. Thanks. DP
- Thread starter DPittman
- Start date
James Howell
Well-known Member
"[b:654c4848f0][i:654c4848f0]it's fully warmed up I shut it off, then when I get back in it to go, it takes about 5 seconds of cranking before it will start[/i:654c4848f0][/b:654c4848f0]"
Have had a same/similar problem for many years.
[b:654c4848f0][i:654c4848f0][u:654c4848f0]<font color="#ff0000">DISCLAIMER: I am NOT a diesel mechanic; all I know is what my mechanic tells me</font>[/u:654c4848f0][/i:654c4848f0][/b:654c4848f0].
Take a look at the photos below.
Replaced the fuel pump.
If the truck does not start, turn the ignition on and then push the "eye" rod up until magnet "[i:654c4848f0]clicks[/i:654c4848f0]".
The box the pump was in.
The new pump installed.
Continued to have starting problem.
Replaced the original relay.
The last of many relays that have been replaced.
.
Have not replaced a relay in several months, but . . .
Have had a same/similar problem for many years.
[b:654c4848f0][i:654c4848f0][u:654c4848f0]<font color="#ff0000">DISCLAIMER: I am NOT a diesel mechanic; all I know is what my mechanic tells me</font>[/u:654c4848f0][/i:654c4848f0][/b:654c4848f0].
Take a look at the photos below.
Replaced the fuel pump.
If the truck does not start, turn the ignition on and then push the "eye" rod up until magnet "[i:654c4848f0]clicks[/i:654c4848f0]".
The box the pump was in.
The new pump installed.
Continued to have starting problem.
Replaced the original relay.
The last of many relays that have been replaced.
Have not replaced a relay in several months, but . . .
tractorsam
Well-known Member
A 99 should have the VP44 pump (rotary, not inline). If so I think the electronics on yours are failing, they get heat soaked when you shut it off warm causing the hard start. I don?t think you can get them separate from the pump so likely you?re in for a new/reman pump. Just my best guess. Good luck and keep us posted. Sam
Oregon Tractor Jack
Member
Fuel shut off relay. Should be on the firewall. Know that was a problem for some Gen 2"s.
OTJ
OTJ
I also had an o ring go bad on a crossover tube to an injector that caused a problem like you have . Pull the codes and see what they are and post here . Or you can go to this website many many millions of miles of experience on these engines and trucks . I quit going here as much because I hate the new layout and I?ve subscribed to the magazine for years and pretty well know what I need to keep em running .
24 valve Cummins forum
24 valve Cummins forum
That would be the "fuel shutoff solenoid, rather than the "fuel pump", I'm thinking!
They have two windings, and connect with 3 wires, one being a common ground.
The the key is switched "on", the "hold" (weaker, and lower current) winding gets energized, but doesn't make enough magnetism to "pull in" the solenoid.
When the stater is activated, power is also fed to the other, (stranger and higher-current) "pull-in" winding.
Once the fuel shutoff solenoid "pulls in", the weaker "hold" winding will hold it engaged even after the "pull-in" winding is no longer powered.
If any part of this doesn't function as it's supposed to, "no start".
When the computer goes bad In the vp44 it will
cause these issues the replacement pumps have an
updated computer to help with the problem but
there is no way to know what?s wrong without
pulling the codes especially where he has verified
fuel pressure which is a big problem with these lots
and lots of things to learn and updates on these but
it?s not hard I just haven?t dealt with them in a long
time
cause these issues the replacement pumps have an
updated computer to help with the problem but
there is no way to know what?s wrong without
pulling the codes especially where he has verified
fuel pressure which is a big problem with these lots
and lots of things to learn and updates on these but
it?s not hard I just haven?t dealt with them in a long
time
I agree that codes should be checked on the ECM. My opinion, I think your problem is a failing VP44 pump, especially with the mileage, most VP44's don't make it that far.
You also didn't say what the fuel pressure was cranking when the problem is occurring. Excessive fuel pressure (over 7-8psi) during cranking can cause advanced timing issues inside the pump. You can try unplugging the lift pump or pulling the fuse for the lift pump and see if it starts better, just plug it back in when it starts. You could also open the water separator valve to dump pressure after you key it on, before starting. I doubt this is your problem since you didn't mention an aftermarket lift pump.
Another free test would be, when the problem is happening pour a gallon or so of cold water on the VP44 injector pump and see if it starts after that. A worn pump can cause symptoms like that when hot, then go away after cooled.
You also didn't say what the fuel pressure was cranking when the problem is occurring. Excessive fuel pressure (over 7-8psi) during cranking can cause advanced timing issues inside the pump. You can try unplugging the lift pump or pulling the fuse for the lift pump and see if it starts better, just plug it back in when it starts. You could also open the water separator valve to dump pressure after you key it on, before starting. I doubt this is your problem since you didn't mention an aftermarket lift pump.
Another free test would be, when the problem is happening pour a gallon or so of cold water on the VP44 injector pump and see if it starts after that. A worn pump can cause symptoms like that when hot, then go away after cooled.
I forgot to mention the service engine light is not on. However I know some codes can come up and not activate the light. I'll pull codes first and go from there but it looks like a pump is gonna be in my future. I've talked to some that are amazed I got that many miles out of it. Thanks everybody. I appreciate the feedback. DP
When my vp44 injection pump started dying it showed two symptoms. 1. It would start similar to yours. 2. If you raised the idle to 2 grand with your foot, it would start stumbling subtly.
You need to check your codes with a scanner. You need to make sure you have good fuel pressure at all times.
I still own my '99 I ordered new, I really like it.
You need to check your codes with a scanner. You need to make sure you have good fuel pressure at all times.
I still own my '99 I ordered new, I really like it.
James Howell
Well-known Member
Thanks for the information.
Similar threads
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.
Copyright © 1997-2024 Yesterday's Tractor Co.
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
Yesterday's Tractors - Antique Tractor Headquarters
Website Accessibility Policy