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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.

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Good afternoon everyone,

 

I did some searching on the site before posting, but would like some other insight.  My truck bucks between 40 and 50 mph and rpms are around 1100-1200 on level 2 and 3; I have not gone above level 3 as pump is not tapped.  I feel it may be timing related as it did not buck today when I had the Quad on level 0.  Current tune set up is below. Do you guys have any suggestions where to move timing to stop the bucking? 

 

Tune:  Mopar1973man Economy Tune

Max Load Timing Offset: 1 degree

Low PSI Timing Reduct: 3 degrees

Timing Reduct Scale: 40%

Light Throttle Timing Adv: 1 degree

Light Throttle Load Limit: 25%

 

RPM Timing Max
1500rpm: 14

2000rpm: 16.5

2500rpm: 19

3000rpm: 21.5

Max: 24

 

I attempted to data log today, but closed app before I could import data.  I will get data tonight when I leave work.

 

Thanks,

 

Tim

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  • Go wot from take off.  Mikes tune is made for 7 x.010's you are running a good bit less fuel than that.  I am guessing your offidle fueling is causing your issues.   Too little fuel will cau

  • So how it works sub 1200 rpm     if(RPMS > idle_limit && TPS > 2)// && RPM > 850) { idle_limit = 600; // RPM low limit fuel_trigger = 1

  • Mine definitely was because of this  it is now a slightly noticeable shutter.  Just hate that trans started to act up.  Always something   Tim

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violent bucking is typically too little fuel for the load

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3 hours ago, Me78569 said:

violent bucking is typically too little fuel for the load

Mine definitely was because of this  it is now a slightly noticeable shutter.  Just hate that trans started to act up.  Always something

 

Tim

Edited by Collinst15

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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.