please help with part number

[bugwugly]

Hey there, I really need to know what part corresponds to the number: 3BO 907 557 D. Any help would be super!

[veedubmechanic]

Where did you get the # from?
I believe 3B0 series is ecms, but i'm not sure

[bugwugly]

I got the number from a website that remanufactures auto parts. The description matches exactly what my car is doing:

VEHICLE JERKS AND BACKFIRES
AFFECTED MODELS:
Engine code AHL, 1.6 L Simos
FAULT:
From cold to operating temperature the vehicle jerks and backfires into the induction manifold when driving off.
CAUSE :
Acceleration enrichment adjustment in the ECU too lean.
SOLUTION:
Fit the control unit with Part No. 3B0 907 557 D - data version D02 available.

However, my car is a 2000 beetle 2.0L. Thank you guys so much for the help! Please keep me posted if you find anything else!!

Thanks!

[yogegoy]

Your engine code is AEG, I suggest you hook a scan tool to your NBug and download the DTC's which I'm sure are stored in memory than match guessing your problem to a different car. It sounds like a MAF unit is going bad but don't take my word until you decypher the DTC's of their meaning.

[bugwugly]

An engine diagnostic reads the following::
-Misfire on cylinder 1, 3 and random misfire
-Fuel Mixture too lean

Thank you.

[yogegoy]

Looks like a bad coil pack.