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A few weeks ago i had a surging idle issue very intermittently, and it went away for a while so i stopped thinking about it. Just got back from a weekend in vermont, about 130 miles each way, and i noticed as soon as i got to vermont and came to a stop sign it was surging, and when i just got home it was surging again. Why would this have picked back up after long stretches of running for a while? Runs great as far as i know, just have this surging idle for some reason. Any ideas?
Yea i thought the IPR seemed low too. I have one waiting to go in...just need to build up the ambition to pull my turbo haha. I bought one because when i brought it to my friend whos a diesel mechanic (90% 6.0s) he thought it was the IPR
Turbo seems to spool quick and responsive, so I think that's fine. The Vgt readings seem to be on par from the values I've seen. I do occasionally get blue smoke in the morning, I think it may be the turbo seal. Doesn't smoke anything at all once I leave the driveway
The only time it surged was at idle. It surged today going up a hill at like 20mph and 2k but it was also a cold engine. Switched back to my custom tune and it runs a lot better