Idle Increase when coming to a standstill

[dainese]

The PS pump puts load on the engine, so it has to increase the throttle position to take the extra load and stop the engine from stalling when you turn the wheel if the engine is at idle. If you have a dodgey or sticky switch, it could be staying engaged, hence the increase in RPM..

ah k, yes of course.

im pretty sure revs do increase when i lock the wheel. will check again.

Thanks

Can you hear a sort of whistling fan noise?

Could just be the secondary air pump coming on.

the air pump i only hear on cold start. and it sounds like a vacuum cleaner.

but now that you mention it. such a slight increase in rpm would not warrant so much noise (that it currently is exhibiting).

hmm.

might need the vagcom thing.
there is no cheap alternative to attaining that piece of gear?

[Treza360]

So I had a quick check today when I got home and the car was at normal operating temperature. Regardless of whether any of the lights were on, air conditioning was on the revs barely changed.

As for VAG-COM you can pick up a V-Checker Pro hand held unit quite cheaply (~$115). Fuzion might still have a couple lying around or you can buy one from ECS or that place that's selling the VAG-Tacho cheap. It doesn't do logging but at least you can view things normally and check for any faults.

Cheers,
Trent

[Andrew_Geo]

Is your foot oon the brake?


Could be a vacuum leak.

[dainese]

So I had a quick check today when I got home and the car was at normal operating temperature. Regardless of whether any of the lights were on, air conditioning was on the revs barely changed.

As for VAG-COM you can pick up a V-Checker Pro hand held unit quite cheaply (~$115). Fuzion might still have a couple lying around or you can buy one from ECS or that place that's selling the VAG-Tacho cheap. It doesn't do logging but at least you can view things normally and check for any faults.

Cheers,
Trent

thanks.

Fuzion is a member here? The handheld units scan for all codes, do they?

Is your foot oon the brake?


Could be a vacuum leak.

yeah, brake is on.

I think we need to scan for codes.

[Treza360]

thanks.
Fuzion is a member here? The handheld units scan for all codes, do they?

Yes and yes. Fuzion has one of the best looking MkIVs in Australia.
http://www.vwwatercooled.org.au/newf...ad.php?t=34008
Cheers,
Trent

[dainese]

Yes and yes. Fuzion has one of the best looking MkIVs in Australia.
http://www.vwwatercooled.org.au/newf...ad.php?t=34008
Cheers,
Trent

yeah, i already sent him a message!

thanks

his car IS nice.

I want his wheels!

Thanks!

[dainese]

it is the auxillary air valve!!!

that is what is causing the noise and the increase in fuel consumption when still.

same whining vacuum cleaner noise, as in start up.

not sure what it does, and i don't know under what circumstances it is active.