# Diesel Trucks **URL:** \ **Category:** PittSpeed Automotive\ **Created:** [October 8, 2009, 10:34am UTC](https://forums.speedlife.net/t/diesel-trucks/203891 "2009-10-08T10:34:25Z")\ **Posts on this page:** 1\ **Showing post:** 36
**Author:** ![Cheeks](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/cheeks/32/5930_2.png) [@Cheeks](https://forums.speedlife.net/u/Cheeks)\ **Post date:** [October 13, 2009, 9:05am UTC](https://forums.speedlife.net/t/diesel-trucks/203891/36 "2009-10-13T09:05:32Z")
> [@Tires for Track Days/DE](https://forums.speedlife.net/t/tires-for-track-days-de/41223/30): > > it starts up you have to hold the throttle down about 1/4 ofthe way to get it to run around 1400 rpm then it starts to surge and drop to 300 rpm then back to 1400 then down to 500 then back to 1300. when its not surging it sounds good at 1300 rpm but if you let of the gas it dropps down to about 400-500 and it sounds just like a very cold diesel truck until it stalls out. he replaced the cam sensor and that didnt do crap balls. Sounds like what mine was doing, there is a ground for the “fuel pump” that grounds itself on the tank, mine came loose and lost good ground. I pulled it off, cleaned teh spot, shrink wrapped it and it worked fine --- _[View the full topic](https://forums.speedlife.net/t/diesel-trucks/203891)._