Surging back after a few days, not as strong as before but it happens on random, even after the changed fuel filter and additives

[nycxjeremyy]

I'm not sure what at this point, the surge went away after a few days but it came back (although not as strong as before) it tends to happen when I let off the throttle, any suggestions would seriously go a long way, im about to give up at this point



Video: https://www.reddit.com/r/Diesel/s/ETzQw2xfxa

 

[dbrannon79]

Does it do any surging while in park? weather you hold the RPM up for a few seconds and let off while in park. I tried to listen to the video you posted on reddit but the sound is hard to make out. might try it in park vs moving in gear, record a video on your phone and upload to youtube post the link here. if it will do it in park you should be able to video it while holding the throttle under the hood too.

 

[nycxjeremyy]

Does it do any surging while in park? weather you hold the RPM up for a few seconds and let off while in park. I tried to listen to the video you posted on reddit but the sound is hard to make out. might try it in park vs moving in gear, record a video on your phone and upload to youtube post the link here. if it will do it in park you should be able to video it while holding the throttle under the hood too.

I have an updated post on the way that is much clearer, give me 5 minutes and check what I uploaded

 

[Will L.]

Welcome @nycxjeremyy

Replied on your other post.

Eratic behavior from an 85' 6.2 (more below) requesting help please (Two vids in one)

This is genuinely confusing me, the first half of the video is of it idling, it then began to surge out of nowhere, this is all after I changed the fuel filter, added howes additive and used diesel 911 to ungel the fuel last week, it actually ran relatively well after doing that and then today...

www.thetruckstop.us

I know being new you aren’t sure if better to make multiple posts but on this forum
we all read the same posts. I suggest focusing on one thread so it’s easier to follow all the details in one.