Power drop 09 Jetta - Normal?

I have had my 09 Jetta TDI Man. for about 5 weeks. I have noticed that when cruising at 1500-1800 RPMs in 3rd and (less frequently) 4th gears, there is an occasional instantaneous drop in power almost like hitting a small bump in the road. I haven't noticed the RPM's drop when it happens, but it's so quick that by the time I look they may have returned to normal. Anyone else experienced this or have any idea what the cause might be?

You're not alone. Look for my thread!

dganio said:

I have had my 09 Jetta TDI Man. for about 5 weeks. I have noticed that when cruising at 1500-1800 RPMs in 3rd and (less frequently) 4th gears, there is an occasional instantaneous drop in power almost like hitting a small bump in the road. I haven't noticed the RPM's drop when it happens, but it's so quick that by the time I look they may have returned to normal. Anyone else experienced this or have any idea what the cause might be?

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Dealer knows nothing of reflash

Took it to dealer yesterday, they looked in the computer and did not find anything regarding an ECU reflash. I read some other posts and found I was "lugging" (I think), cruising at too low a RPM. I "drove it like I stole it" on my way to the dealer and then home. The problem seemed to get worse when I was nearing home when driving around 25mph. On the way to work today, I drove it the same way and it worked like a champ, but I was never driving at 25 for any length of time. I'll keep posting any updates.

are you by chance coasting when this happens, Mine does this occationally, and I believe it to be the ECU stopping the flow of fuel to the engine, then immediatly starting it again. Just a guess though I could be wrong. I've noticed it at highway speeds when coasting in gear down a slight hill.

Please consult DD's 09 FAQ.