Guys and Gal, hoping you could help an old man who is down on his luck. I remember seeing symptoms like I am about to describe but a search has not turned up anything helpful, but me thinks I have seen somebody with the same problem. So it seems to have started after I changed my oil and filter and after some driving around a few miles. The oil sits 3/4 up on the hatch area of the long long long dipstick. We then took a roadtrip to north Montana and back to Colorado, about 1800 miles with some driving there. All dirt roads up there. Now the truck drives with a very touchy accelerator pedal (sensitive to hardly any input) and shifting harsh. rechecked the level and is still 3/4. I put 12 qts in, then drove around the block then added another qt and half. No ticking noise, not overfilled, I purpose left some room. Batts never been disconnected. Nothing cept an oil/filter change and a road trip between running like a very finely tuned race car and now. Still runs smooth, just touchy pedal and harsh shifting. Did add some DEF on the trip and only had two regens down to .98 soot level. I did notice the dirt road driving mucked up the filter a bit and I vacuumed out the small bit of dirt road in the filter box to see if that helps..nope. I may try disconnecting both batts for 15 mins to force a relearn of tranny shifting and maybe reset everything in PCM ville.

I just remember seeing someone else had same issues after oil change with a 2010 or 2011 6.7 PSD, but they overfilled, drained and refilled to proper level. Cant remember if that fixed their issue and maybe the oil change has nothing to do with the onset of my issue. But the pedal is so sensitive I cant determine if it FEELS touchy because the shifting has changed to a more harsh shift and it lingers in 1 a tad longer or I have two issues. Ideas about what to look at are very welcome. The road trip was great. 20MPGs per the lie o meter. No backache. Kids loved the roomy rear seat and used all the outlets to power their games, DVD players etc. BUT while we were in montana, a couple of cowboys peed on my truck steps at the wedding after hitting the open bar watering trough. That pissed me off..no pun intended. Another guy jumped in and was going to take off with my truck but I managed to pull him out. Whilest driving down the road with a bedfull of drunk ranch hands one guy took his pants off to pee off the side, lost his balance and fell out and grabbed the top the tailgate and hung on for a dragging. No one told me he fell out, he let go and his buddies in the back didnt tell me we left him in the road till we got to the pond a couple miles later. Once at the pond, more drinking and peeing on vehicles, we left the pond, only to have another guy jump out of the bed while going 30 mph. I stopped an backed up while watching him in the mirror. He grabbed a stick on the road and started beating the ground next to the road. He reached down and picked up the 4 foot long rattler he was beating, cut the head off and tossed it to my kids in the back. I am very happy to be home again. Mike

 

Sounds like a heck of a time! Them cowboys seem pretty wild...hope your wife didn't mind all the peeing (flashing) going on.

Ok...you said that you put in 12 qts. Then added another 1 and 1/2 qts. That means you added a total of 13 1/2 qts.

The 6.7L only takes 13 qts.

Might need to visit dealer...and have them check to see if you have the latest flash program.

Good luck...


biz

 

maybe a good idea. guess i went off on a rant at the end of my post. I'll to continue to search, just wish I could remember who had the problem and what they did to fix. Eventually i'll find the post. Thanks Mike

 

Sorry, no idea on your problem.
But WOW great story.

Was Roy in the back of your truck by any chance? (j/k Roy)

 

Names withheld to protect the innocent...oh, there are none. Let my 8 year old drive the truck on the dirt roads there. He did great. Worked the accelerator and brake like a pro. Taught him how judge the distance to the edge by orienting the edge of the road in the middle of the hood. Now i just need to program a key for him.

 

Wow man, I'm glad I don't have days like that any more..............I guess it was a rite of passage and not all survived.