MK5 Golf GTI

All Things Mk5 => How to Guides / Troubleshooting => Topic started by: GTICZ on December 14, 2017, 06:04:15 pm

Title: massive rev kicks down - UPDATE - SOLVED!
Post by: GTICZ on December 14, 2017, 06:04:15 pm

Hi guys,
  im dealing with this problem:

https://www.youtube.com/watch?v=-EnGCBlq2B8&feature=youtu.be

whats happend:

-bad DV and coolant distribution pipe - repaired and cars goes nicely for week
-my battery drained while i left parking lights on for 2hours in cold (since then i thing readiness isnt full 0 )
-after two days, first time i got this problem - 3.500 rpm and massive lag under full load with 3rd gear
but cruising is without any signs of problem, speed over 200km/h no problems. (empty highway in night for test)
-next day same problem, around 3500 rpm huge lag, no fault codes, nothing weird in vcds
-few days without any problems in whole rmp
-yestarday around 2pm i felt little loose of power, then ok and vcds have 004243 fault at this time ... but ... around 4.40am several times exactly like in video on top.. around 5.500 rpm huge lag rpm fall down and get back but there is no fault code for this...
-idle and normal cruising is fine

does someone had this problem?

Title: Re: massive rev kicks down - edited
Post by: GTICZ on December 17, 2017, 03:13:55 pm

anybody?  :thinking:

Title: Re: massive rev kicks down - UPDATE
Post by: GTICZ on December 30, 2017, 08:30:19 pm

News..

  i have NO fault codes.. tried another MAF, PCV.. still massive lag..

logs:
https://files.fm/u/bbnprbwd

https://vimeo.com/249196045

Title: Re: massive rev kicks down - UPDATE - SOLVED!
Post by: GTICZ on January 03, 2018, 06:33:37 pm

SOLVED: Crankshaft sensor was faulty.. from 5500 daily till 3000rpm max...