2015 Passat TDI

[holeintheice]

The wife has a 15 passat. Since last summer can has had a misfire here and there. Very rare. Thought she was loosing it. Later in fall seems to be getting worse where only when it's up to operating temperature it's like a dead mis. Only at idle. The RPM needle is affected too, drops while mis hits. No codes, no stored codes. Dealer did a HPFP as was leaking onto belt, also did W/pump while in there. Since seems to have gotten worse and stayed the same. Anyone one else have a cause, verified find/fix?

 

[hskrdu]

Check this post to see if it sounds close enough (his is at speed, not idle) to lead to the links below:

Engine Hiccup

When I am driving my 2015 Golf Sportwagen TDI s I will get a drop off in engine RPMs. I would describe it as a hiccup while driving as the RPMs fall off and then come back up. It seams to happen while driving at highway speeds mostly. It has happened a few times while driving in town. Since...

forums.tdiclub.com

This thread may be helpful:

Random Engine Hesitation

Edit/Spoiler: Just to help anyone reading this in the future, the solution turned out to be a new crankshaft position sensor. In case you don’t want to read to post #75 to find that conclusion. Also see post #71 for how I confirmed that the crankshaft position sensor was occasionally giving a...

forums.tdiclub.com