99 Passat idles rough -- Please help

[artmann]

I just bought a used 99 Passat V6 with 74K on it. The engines is idling rough like it is miss firing.

The place I bought the car from changed out the spark plugs and the plug wires but the problem is still there.

Any idea what could be the problem? They ran a computer diagnostics and scanned the codes, but nothing came up.

Also, when I'm accelerating, the engine feels like it is lacking power at low rpm. Since I just got the car, I don't really know if this is just the way the car is or there is something wrong (related to rough idling??).

What I do know is compared to a 01 Jetta V6 I drove, the Jetta had a lot more low end power.

Thanks for any help.

[mbogosia]

Check the coil packs or just replace them. Try buying them online at ecstuning.com . Good luck

[boschmann]

Also, commonly the MAF can be out of calibration. It won't necessarily set codes either. The only way to see it is to take it to someone familiar with using a VAG scanner or simulator. You can read the measuring blocks & see if it calculating air volume correctly.