Jump to content
  • 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.

Recommended Posts

So I’ve been driving my dads truck for a while and I’ve noticed in the morning at first start up the truck will surge a bit under very light throttle. Like only enough throttle to get the trucks moving you can hear it. Let it coast, nothing. Get a little more on the throttle, nothing. Only lasts a 1/4-1/2 mile or so.

 

Doesn't seem like there’s neccesarily anything wrong, just wondering if anyone knows what it could be? 

Share this post


Link to post
Share on other sites

Remember just because there is no CEL doesn't mean there aren't codes stored. I would look into getting a OBDLink or similar and plugging it in and you can check both live data and error codes both. 

 

Remember error code are typically stored for 40 engine warm-up cycles. This means dropping below 140*F on cooldown and rising above 160*F. is one warm up cycle.

Share this post


Link to post
Share on other sites

That's what I'm trying to do is see what is causing the issue by getting some information from the engine and possibly see why its surging. Right now all I can do is guess that it could be injectors, FCA, coolant sensor, IAT/MAP sensor Etc. There is a lot of information used by the engine from different sensors and without being able to see the data it tough to point the finger at something. 

Share this post


Link to post
Share on other sites
6 minutes ago, notlimah said:

I doubt it’s any of those, the truck only has 9,3xx on it. I’m thinking it has something to do with warming the emissions crap or something but not entirely sure.

 

That made me think a second. If I'm not mistaken the 6.7L have oxygen sensors. I again I wish I had some live data. You would be able to see the sensor that is creating the surge. My knowledge on the 6.7L is limited but I've got a basic understanding. 

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



×