Jump to content

Welcome To Mopar1973Man.Com LLC

We are privately owned, with access to a professional Diesel Mechanic, who can provide additional support for Dodge Ram Cummins Diesel vehicles. Many detailed information is FREE and available to read. However, in order to interact directly with our Diesel Mechanic, Michael, by phone, via zoom, or as the web-based option, Subscription Plans are offered that will enable these and other features.  Go to the Subscription Page and Select a desired plan. At any time you wish to cancel the Subscription, click Subscription Page, select the 'Cancel' button, and it will be canceled. For your convenience, all subscriptions are on auto-renewal.

Hey everybody

Posted

I have a problem I have a 2001 Dodge Ram 2500 24v three-quarter ton long bed 5 speed 4 wheel drive and the RPMs and everything worked perfectly fine until about 5th gear it starts surging between 65 and 70 miles an hour and I'm trying to find out why

Edited by Nathans24v

  • Replies 8
  • Views 1.2k
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Most Popular Posts

  • dripley
    dripley

    Welcome. The above is a great place to start.

  • Hawkez
    Hawkez

    I would be interested to know what your fuel pressure is doing.  Do you have a stock lift pump?   Are you checking codes with the key trick or using a type of code reader?  If it is the key

Featured Replies

Welcome. The above is a great place to start.

    • Thanks 1

    Any codes?  how about your fuel pressure, do you have a way to monitor this in the cab?

     

    Are there any mods done to your truck?

    • Author

    No codes. Havent bought any gauges yet. Plan on getting some boost, fuel don't know about the third one yet.

    Only thing I've done is change the hx 35 for a hx 40. But I'm about to change that cause the exhaust housing is too big and laggy on shifts.

    Edited by JAG1

    I would be interested to know what your fuel pressure is doing.  Do you have a stock lift pump?

     

    Are you checking codes with the key trick or using a type of code reader?  If it is the key trick, I would look into a code reader to verify that there are no codes. 

     

    Testing for AC noise like suggested above is quick and easy.

    • Like 1
    • Author

    Key trick. I don't have the bosh lift pump. I have a spectra lift pump

    I am going to a friend's shop that has a coder reader

    • Staff

    Are you confusing a Bosch injection pump with the lift pump? They are two separate parts on the fuel system. The lift pump keeps the injection pump fed. Sometimes called the fuel transfer pump, it can go out, but the truck still runs because the injection pump can pull enough fuel on its own, This eventually kills the injection pump by starvation, not having enough fuel pressure to lube and keep it cool. Any fuel pressure under 14 p.s.i causes an accelerated wear or damage to the injection pump. 

     

    First item is to get a fuel pressure gauge and a 1/2 inch fuel line kit with a good lift pump.  

     

    BTW, Welcome to the forum.... all great folks around these parts :thumb1:

    Edited by JAG1

    Fuel pressure gauge is a must in these trucks.  this will help immensely in troubleshooting and prevention of future failures.  Also, how many miles on the truck?

    Go to topic listing

    Did This Forum Post Help You?

    Show the author some love by liking their post!

    Welcome To Mopar1973Man.Com LLC

    We are privately owned, with access to a professional Diesel Mechanic, who can provide additional support for Dodge Ram Cummins Diesel vehicles. Many detailed information is FREE and available to read. However, in order to interact directly with our Diesel Mechanic, Michael, by phone, via zoom, or as the web-based option, Subscription Plans are offered that will enable these and other features.  Go to the Subscription Page and Select a desired plan. At any time you wish to cancel the Subscription, click Subscription Page, select the 'Cancel' button, and it will be canceled. For your convenience, all subscriptions are on auto-renewal.