Hi,

I have just joined the forum after purchasing an 06 plate Fabia VRS. I have noticed that the engine seems to judder slightly if the revs are held at 2000 RPM. It is more noticeable in 4th gear. A friend who works at Audi has plugged it in to the diagnostics and says that the fuelling is correct and there are no fault codes. He suggested that because the car has been involved in a front end collision in the past, it may have slipped a tooth on the cambelt.

Does anyone have any input on this? Would it not throw up a crank sensor fault if the timing was out?

The car has done 44k miles if that is of any use

Thanks

Sounds like the "blt stutter" to me. Have a little search on here, lots of info on it.

Matt

If the timing belt had/has jumped a tooth the Crank/Cam syncro reading will be wrong.

Using VCDS/VAGCOM Go to engine, measuring blocks, channel 3 and look at the timing syncro angle. It should be ZERO +/-3

Thanks for that! Puts my mind at ease a little

Have a read of this:

http://www.fabia-vrs.com/technical-info/blt-engine-hesitation-fix/

If it's juddering but the engine is running ok... It could be the dual mass flywheel, common on Audi 1.9 and 2.0 tdi's and they are prob the same on fabia's..... just something to think about if your cambelt and fueling checks out ok!