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Lost compression 2011 TDI Touareg

3.4K views 13 replies 5 participants last post by  volkswagens-for-life  
#1 ·
Any suggestions where to begin? I lost all compression while drive last evening and was able to limp the Touareg home. I'm not having great luck finding a mechanic yet, so I would like to at least diagnose my issue. Going to scan it and check compression this evening. Any likely causes?
 
#4 ·
Maybe jumping the gun on "lost compression". 2011 TDI, 6 CYL. As I was driving the glow plug warning light started blinking & engine light. Engine sounds normal, shifts through gears but no power and apparently no turbo. Barely topped 40 mph up gentle grade on country highway. Tonight will have a friend scan it and possibly check for compression. I'm no mechanic...just a carpenter looking for resources before I hand it over to the big city VW dealer in the high rent district just to have them change a fuse.
 
#11 ·
Ok, so ran a scan and it turns out to be a clogged exhaust particulate filter. Exhaust warranty work was done for a previous owner in 2018. I'll check with dealer for continued warranty coverage. Not sure if aftermarket exhaust will disqualify me for coverage. It is running normal again & warning lights gone...maybe the limited RMPs were to deliberately handicap me until I fixed the problem. So it's either covered by VW, or it appears I can clean and restore the existing filter. New filter is $1600 for aftermarket, so that is last resort.
I'm a VW newb & it took me a minute to remember all that talk a few years back about the emissions scandal. Never thought it would pertain to me so I didn't give it much thought at the time.
Thanks for the help all!
 
#12 ·
Ok, so ran a scan and it turns out to be a clogged exhaust particulate filter. Exhaust warranty work was done for a previous owner in 2018. I'll check with dealer for continued warranty coverage. Not sure if aftermarket exhaust will disqualify me for coverage. It is running normal again & warning lights gone...maybe the limited RMPs were to deliberately handicap me until I fixed the problem. So it's either covered by VW, or it appears I can clean and restore the existing filter. New filter is $1600 for aftermarket, so that is last resort.
I'm a VW newb & it took me a minute to remember all that talk a few years back about the emissions scandal. Never thought it would pertain to me so I didn't give it much thought at the time.
Thanks for the help all!
Yeah, limp mode...


Hopefully your exhaust is stock......
Car probably spent a lot of time idling or short-tripping, which cooked the dpf
 
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