Engine/Transmission (1998.5 - 2002) cwversyp

[cwversyp]

I have a 1998 24 valve 3500 standard transmission. truck runs fine when not loaded and when cold weather with load [my travel trailer]. when hot weather[ 85 degrees] pulling the trailer, it starts jerking the trailer bad. Had it checked at dodge dealer and no codes or problems. hooked on my trailer went for a drive with the teck and his protable machine. drove for 50 miles, no problem. of course it was a cool morning. just wondering if any one else has had this problem.

has 100,000 miles on it.

 

[JR]

Hard to say with no codes showing. I would check ALL battery and ground connections, load test your batteries if they arent new, and if you dont find anything there do an apps reset.
Do you have a fuel pressure gauge? Its important to have a constant 14 psi minimum to your injection pump. If your starving your injection pump under load, that could also cause bucking .

 

[cwversyp]

Hard to say with no codes showing. I would check ALL battery and ground connections, load test your batteries if they arent new, and if you dont find anything there do an apps reset.

Do you have a fuel pressure gauge? Its important to have a constant 14 psi minimum to your injection pump. If your starving your injection pump under load, that could also cause bucking .

I dont have a fuel pressure guage. I checked the pressure and it was 15 psi at idle. I am new at this, so what is an apps reset. I will clean ground connections.

On a hot day I did get it to cut out a little at 90 miles an hour without the trailer. I have a fass lift pump I insalled a year ago. I also changed the fuel filter which didn't help.

cwversyp

 

[Vaughn MacKenzie]

APPS reset, the APPS is the throttle position sensor (accelerator pedal position sensor) and instructions are in the 24-valve FAQ section, but here's a link for ya https://www.turbodieselregister.com/forums/showthread.php?96262-Ressetting-the-APPS-TPS-sensor

 

[JR]

If the apps reset doesnt work, maybe you can take your tech for a ride with his scanner on a warmer day? Depending on where you live that may or may not be feasible this time of year.

 

[cwversyp]

Thank you for the information. I will do what I can for now, but unsless things get worse it will be nex year befor eI pull my trailer again and it is hot weather

 

[cwversyp]

thank you for the information. unless things get worse I probably wont know any thing untill next year when I pull my trailer again and it is hot weather.