View Single Post
Old 09-13-2019, 05:45 PM   #2
Midwestdrifter
 
Join Date: Sep 2013
Location: Charlotte NC
Posts: 11,706
Thanks: 2,288
Thanked 7,764 Times in 4,921 Posts
Default Re: Turbo surging/cycling

You need to get a scanner on it, and monitor the live data. There are numerous intermittent conditions that can cause this issue. One bizarre one is a bad oil temp sensor. Another is a sticking fuel quantity valve.

Any signs of pulsing or rough idle?

Have you checked the turbo actuator for the pulsing movement at idle?

What are you using to check codes? A sprinter specific scanner (not scanguage) is needed to view all the modules for pending/stored codes.

Other thoughts, Pedal sensor, check live data to make sure its consistent.
Exhaust or boost leak. Either one can open/close as the boost pressure changes, creating a hysteresis loop.
__________________
2004 T1N | Overland Conversion in Process Completed...For now... | 187,000 miles | 140" | High Roof | My Build Thread
Another Random Blog | http://VagariesAbound.blogspot.com

Last edited by Midwestdrifter; 09-13-2019 at 05:49 PM.
Midwestdrifter is offline   Reply With Quote
The Following User Says Thank You to Midwestdrifter For This Useful Post:
ions82 (09-17-2019)