[320D_germany]

I feel like :facepalm:

I have a 2001 320D with a manual transmission. When I accelerate slowly (on flat or an up hill grade), my car often has a moment around 1800-2000 rpm where the power disappears. The feeling is like the clutch was pushed in for a split second, like a hiccup. The rpms do not dip and the time laps is about a quarter to half a second. It does this most predominantly in 2nd and 3rd gear but can be felt in 1st as well. If I accelerate fast it does not happen (or it is not detectable). I switched the Mass air flow sensor without improvement. The fuel filter is also new.

As always these little problems you can not find an answer to are driving me :banghead:

 

[320D_germany]

OP mentioned the fuel filter is new.

However, I am experiencing the same symptoms at light load and suspect my filter as well (original filter, 197k miles, slap me now.)

Yes, my filter is new.

I have noticed this jerk happening more often, it even happened three times in a row within seconds. I have not had that happen again but it seems like a sign that it is getting worse. I am still monitoring it for now.

How can you test the fuel pump without buying a new one?

 

[320D_germany]

This is territory I don`t know about. What is vanos? I do not have a code reader.

 

[320D_germany]

Its been a long time since I posted this thread but I did get to a resolution which I want to share. There was a hose that comes from the turbo to the inter-cooler which delivers the air to the intake system. This hose had a big crack in it which was not easy to see. The air was blowing out the crack at peek turbo pressure and spitting oily air onto the wheel well and everywhere else too. After I changed the hose the "hiccup" problem went away but the lacking power remains. Ive started a new thread for my low power problem with the fault codes. I never had the codes before so this is a new insight.