RS2 No boost after 30seconds of startup

[RS2ZuidAfrika]

Time for an update boys.

Boost issue was because the hose leading to the MAP sensor was cut in 2.
Warning light on dash and beeping was because of a power steering leak.
Vibration upon deceleration was a gearbox mount that allowed the box to jump up and down.
Brakes are perfect no hassles.

Doing a coolant service as well because i developed a major leak while boosting.

I want to take this opportunity to thank each one of you for contributing: even if your assumption or theory was not directly useful, i certainly learnt a lot from all of you.
Will keep you updated

[prj]

Interesting that you got a signal too high and not implausible signal or signal too low in that case, which has been my experience...
Certainly a first.

[macspring]

RS2Zuidafrika,

Thank you for posting the final outcome of the issues affecting your RS2.

Also just glad the fighting has stopped ! ...

[UrS4boy]

Boost issue was because the hose leading to the MAP sensor was cut in 2.

Glad you finally got your issues sorted.

The loss of boost is common with the UrS4s when the boost/vacuum signal hose comes off of the moisture trap (the Oetikker (sp) OE clamps get weak and the hose comes loose with time). This is not a problem with the UrS6 and shouldn't be a problem with the RS2 because of the location of the moisture trap. However, a cut hose will definitely cause the same problem.

More MAP boost signal hose info here:

http://forums.quattroworld.com/s4s6/msgs/20401.phtml

[GrantGam]

Hi all,

I know this is an old thread... but if anyone is having issues with limp mode, then there is an easy first check: remove and clean the MAF sensor. A cotton bud and contact cleaner does the trick and it worked a charm for me. Just a little dirt and grime on the sensing element was causing intermittent 'limping' which I didn't even know existed at the time. I thought I had an engine timing/misfiring problem. Luckily, it was an easy and free repair from someone who is useless with a spanner

Take it easy,
Grant

[UrS4boy]

Hi all, I know this is an old thread... but if anyone is having issues with limp mode, then there is an easy first check: remove and clean the MAF sensor. A cotton bud and contact cleaner does the trick and it worked a charm for me. Just a little dirt and grime on the sensing element was causing intermittent 'limping' which I didn't even know existed at the time. I thought I had an engine timing/misfiring problem. Luckily, it was an easy and free repair from someone who is useless with a spanner Take it easy, Grant

Grant: You should post this on the "S6 timing" thread as well. Could be the answer there too.

[GrantGam]

Grant: You should post this on the "S6 timing" thread as well. Could be the answer there too.

Yo,

Posted in the S6 timing thread. Hope it works for someone else too!

Grant