Jump to content

We have detected that you are blocking our advertisers. We pay our operational bills with advertising and donations. Please add Mopar1973Man.Com to your whitelist of sites on your adblocker. If you register as a member and submit a donation to the website, the advertising amount is reduced the more you donate. 

 

whitelist.png

 

This will allow you to keep you adblocker turned on for other sites and allow to display advertising here. Thank you, for understanding and whitelisting Mopar1973Man.Com. This will allow us to continue providing quality Cummins diesel information to everyone for free!

  • Welcome Guest To Mopar1973Man.Com

    We are a Dodge Ram Cummins Turbo Diesel forum. We are very friendly and helpful group of Dodge Ram Cummins owners. We will try to keep your truck running the best we can and provide information for diagnostics, repairs and even guide you on the best replacement parts to use. 

     

    Registration is free. Registering on the site will provide access to many more things like...
     

    • Contribute to the Forum being able to ask questions and get support for your Dodge Ram Cummins.
    • Contribute to Article Database adding your ideas and suggestions.
    • Classified Ads posted by the members. Post up your used parts and vehicles.
    • Member Garage where you can proudly display your vehicles and modifications that you have done to them.
    • Download files, documents, and Quadzilla Adrenaline tunes for your truck.
    • 911 Support Network. We've got a group of members will to aid you if your truck breaks down on the road.
    • Reduced Advertisements displayed to you.

Sign in to follow this  
cumminspowered01

01 surging on highway??

Recommended Posts

My 01 surges with the cruise on at any highway speed. If I take the cruise off and hold my foot in one spot and it will hold speed and boost. With the cruise on it is back and forth between 11-17 psi. Any suggestions?

Share this post


Link to post
Share on other sites

Is your's run off the vacuum or ECM? If it's vacuum controlled you might have a leak. The actuator is under the driver side battery. Check all the vacuum lines to see if you have any leaks. Let us know if it is ECM controlled..

Share this post


Link to post
Share on other sites

Is your's run off the vacuum or ECM? If it's vacuum controlled you might have a leak. The actuator is under the driver side battery. Check all the vacuum lines to see if you have any leaks. Let us know if it is ECM controlled..

Yeah it could look like this... http://forum.mopar1973man.com/attachment.php?attachmentid=836 After some plastic welding. http://forum.mopar1973man.com/attachment.php?attachmentid=837 Cover removed... http://forum.mopar1973man.com/attachment.php?attachmentid=841 Valve Solenoids removed... http://forum.mopar1973man.com/attachment.php?attachmentid=840 http://forum.mopar1973man.com/attachment.php?attachmentid=838

Share this post


Link to post
Share on other sites

Is your's run off the vacuum or ECM? If it's vacuum controlled you might have a leak. The actuator is under the driver side battery. Check all the vacuum lines to see if you have any leaks. Let us know if it is ECM controlled..

i agree..under the driver side battery there is what is called the cruise control servo..it has a hard 5/32 or 7/32 ...dont remember what size line...running from there up to a vacuum header that is hanging out of the hood to cowl seal..right above the valve cover.that line can crack...come out of the little 90 degree elbow at the servo.hope this helps you out.
  • Like 2

Share this post


Link to post
Share on other sites

Oh... Another trick... The plastic tubing... Remove the full length of it from end to end... Now flex the tubing and roll the flex down the length looking for splits. Don't kink it or fold it... just put a heavy bend in it and if the tube is split it will show up quick! On my Mom's 96 it split the tube but would randomily work and not. Well after flexing the tubing the split showed up so I replace the piece and the problem solved.

  • Like 1

Share this post


Link to post
Share on other sites

Bigger injectors bigger turbos and a dying VP44 are all possible cruise surging causes also. My 02 started surging as the very first sign of the VP44 dying a few days later it got the hard start when warm issue then a few days later I lost the throttle. Chrysler bought that one for me though as it was still under warranty at 40k.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  



×