OK. As an update to an earlier post about my MAF:

http://briskoda.net/octavia-i/disconnected-maf-problems-octy-1-8t-53-a/124703/

I cleaned the TB and fitted the new N75 valve yesterday. It was all pretty easy except for those stupid one-use clips on the N75. What a PITA to get them off . Anyway, ran the car to work this morning and it's difficult to tell if it's made any difference because the traffic was heavy so I couldn't test it properly.

The revs are still ticking up and down ever so slightly around 800 rpm. Is this normal to have a bit of flicker? It's more of a throb in a regular beat so better than it was.

The turbo seemed to be behaving but I'm still sure the car has felt better (smoother/faster). Does the ECU need time to recognise the new N75 signals or am I talking nonsense? Might have to start doing all the pipes next but I can't see any splits or bad connections, or hear any hissing.

This is all connected to the dreaded 17705 code.

Any more thoughts welcome

Did you re-align the TB after cleaning it? I think you need VAG-Com to do it.

I didn't think I needed to because I didn't disconnect any of the plugs?

If you didn't unplug the sensor then no it's not necessarily needed to do a reset, but as you've cleaned the TB it's probably worth doing anyway (another thing to tick off your list)

but as you've cleaned the TB it's probably worth doing anyway

If the TB wasn't unplugged it doesn't need resetting, believe me I've done quite a few this way and never needed resetting.

did you replace the TB gasket or reuse it?

If the TB wasn't unplugged it doesn't need resetting, believe me I've done quite a few this way and never needed resetting.

Sorry what I meant was I know you don't 'have' to do it - but it could do no harm having it done anyway? Especially if it's never been done.

Yeah I never reset mine, I just sprayed the nuts off it with carb cleaner!

did you replace the TB gasket or reuse it?

Thanks all.

I replaced the gasket with a lovely new green paper one from the stealers. The revs are still a bit lumpy at idle as mentioned above, and I don't have VAGCOM so can't reset the throttle, unless that door-open, bonnet-up thing works but I suspect it's a crock.

Does anyone know if the ECU needs time to adjust to the new N75 or should it behave straight away? Cheers

Hi Mate

Remove fuse 10 and leave out for 5 mins or so then replace it.

This will perform a ECU reset and also a TB reset at the same time.

Regards Chris