cummins surge

[stevens cummins]

Ok guys my 2000 2500 cummins and now that its turned off cold ive noticed when cruising at 55 itll randomly just feel like i let off the throttle a bit then pick back up any of u guys had this issue and what caused it ive seen on here that the apps can cause this

[TFaoro]

Give the APPS a reset to see if that clears it up. Do you have anything to take live data? If you do you would be able to see the voltage on the apps go crazy. Do you have a fuel pressure gauge and an aftermarket lift pump? What PSI are you running?

[stevens cummins]

No way to check live data, how do i reset apps and im running by guage 12 psi wot 14 cusing and 18@ idle

[Yankneck696]

THere is surely an article in the article section. Read them all when you get a chance, as they will help you in the future.

 

Ed

[stevens cummins]

Will do

[TFaoro]

Very bottom of the article http://articles.mopar1973man.com/2nd-generation-24v-dodge-cummins/26-engine-systems/35-apps-sensor-replacement-procedure

[kerley]

12psi is low for fuel pressure imho.

[stevens cummins]

Yes not pleased with that but cant afford a fass yet

[eddielee]

I had a hesitation and changing the fuel filter worked.