2010 Golf Wagen TDI, engine 'numbness'?

babaji

Active member
Joined
Oct 29, 2009
Location
Ontario, Canada
TDI
2010 Golf Wagon 2.0 TDI
Yeah weird title eh? For the lack of better terms. Perhaps I should describe this. Has anyone noticed if you are zipping along and crest a hill, just as you come down off of the peak and over the other side, the engine seems to go into 'hibernation mode'. It's a weird sensation. It's almost like it goes to sleep with a slight hint of engine compression, but not much. The accelerator pedal seems unresponsive to slight pushes, you have to really 'punch it' (relatively speaking) to wake it up again. Then it seems to power up again.

I am guessing it has something to do with it shutting off the injectors since no more fuel is needed to maintain the same speed on the down hill. Some kind of a fuel saving strategy?

I am sorry if this has already been discussed and I have missed it.
 

dieseldorf

Top Post Dawg
Joined
Oct 11, 2000
Location
MA
TDI
ex- 1996 wagon, ex-2000 Jetta
Baba, it this TDI your first?

Welcome aboard!
 

babaji

Active member
Joined
Oct 29, 2009
Location
Ontario, Canada
TDI
2010 Golf Wagon 2.0 TDI
dieseldorf,

Thanks for the welcome! I am 'upgrading' from a beat up '97 1.9 turbo diesel 5 door. Drove it once from Montreal to Toronto(almost) with no alternator belt. but i digress Not really a TDI is it?

I guess this is my first fully electronic Diesel. Yeah.
 
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dieseldorf

Top Post Dawg
Joined
Oct 11, 2000
Location
MA
TDI
ex- 1996 wagon, ex-2000 Jetta
No, that was not a TDI...you're correct.

I'm wondering if you what you are experiencing is the fuel cutoff in over-run (while coasting). I haven't driven the newest cars, but the earlier cars certainly have a point where it feels like you are giving it more pedal and nothing is happening under the hood. Fueling does drop to 0 under certain conditions.
 

babaji

Active member
Joined
Oct 29, 2009
Location
Ontario, Canada
TDI
2010 Golf Wagon 2.0 TDI
Yeah, that's likely what it is. Just seems kind of extreme. But then again, i am not used to it. I am sure it will become second nature soon. Thanks for your help!
 

frugality

Top Post Dawg
Joined
Sep 19, 2003
Location
Spring Lake, Michigan
TDI
none, 2016 GTI
Had to ask. There are a number of threads about jerky/hesitation/lag behaviors with the DSG transmission, so I thought that's what you might have been experiencing.
 

jalanrr

Member
Joined
Nov 27, 2007
Location
Cobleskill, NY
TDI
2010 Sportwagen 6spd
My '10 w/ a manual trans does this when cresting a hill sometimes too. I also figured that it was the fuel cutoff and that it's 'normal'. I do think it is kind of odd how pronounced it is though- I have a Duramax and it also cuts the fuel when the engine load is zero and I never noticed it like I do with this car. The first couple times it happened, it really startled me.
 
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