Boost stops at 1.4bar - N75?

[mike74]

Passenger side, behind kick panel under glovebox. If the inlet pipe pulses after revving it, that would say to me there's possibly something wrong with the dump valve...depends how big the pulsing is I guess

[hunker7]

How can I adjust it? Can i see what it sees in vagcom?

[mike74]

No idea about vagcom I'm afraid. Have a search on here about it, there's lots of info on how to test and adjust it. The basics of it is measure resistance over pins 1 and 2, should be around 1200 ohms. If its more than that then carefully prise the retaining lugs apart, open the unit and bend the metal tab until resistance is correct. Mine was reading over 1500 ohms and I adjusted it to just under 1200. It sounds tricky but its actaully very easy to test and modify once you have it in your hands. Once open the way the unit works should be self explanatory

[UrS4boy]

...some teacher you are!

I call it "tough love".

He needs some incentive to get in there and get it done.

And BTW hunker7, a boost leak WILL occur "overnight" (or instantaneously) when a boost host splits. Re-read my post on AAN boost leak testing.

[UrS4boy]

Where is that monster? Also when i rev it and let it go the inlet pipe pulses if you know what i mean.

Click on the URL below and open up the live version of my engine bay device map (and then book mark it for future reference).

Then click on the F96 Altitude sensor box in the upper left corner. It should tell you what you need to know about it.

But you still need to do that boost leak test to eliminate split hoses from the equation.

Engine Bay Device Map: http://members.shaw.ca/speedtek/UrS%...ice%20Map.html

[hunker7]

I call it "tough love".

He needs some incentive to get in there and get it done.

And BTW hunker7, a boost leak WILL occur "overnight" (or instantaneously) when a boost host splits. Re-read my post on AAN boost leak testing.

I am now making friends with gavs20v, and hope he can help me with boost test

[geneandbolly]

the s2 forum breathes a sigh of relief!!

[hunker7]

Visited newsh yesterday to do the boost test. Discovered boost leak by the wastegate and one of the injectors were leaking, dumb valve was "kaput" too. Now that's all sorted and the damn thing still isn't running, and if that's not enough, one of the injectors died.

[Rikki Kitto]

Got an injector you can have buddy let me know if ya want it

[hunker7]

Got an injector you can have buddy let me know if ya want it

Thanks mate, I have V6 injectors they should work, if not...will take up on that offer

[newsh]

Sure it's the injector? Might be the wiring after being stretched around changing the injector seals..

[newsh]

Boost stops at 1.4bar - N75?

Yep number 5 injector seal was leaking badly, there was a leak at the WG banjo connection. We also found a leak at the turbo outlet which we fixed with a new clip and a split in the Maf hose repaired with tape for the moment.
So with Hunker having done the injector seals it should now be leak free. He says it's going much nicer but still only 0.4Bar of boost! What can it be???

[hunker7]

It sometimes works sometimes it doesn't, i will check the wires tomorrow...i had enough today.

[newsh]

Maybe your TPS is not giving WOT signal, that would do it. I think you should be able to read the TPS in Vagcom, measuring blocks, it will probably be called engine load.

[hunker7]

Done that, reads 7.8 degrees at closed and 97.8 at WOT. Dunno how to see if it send the signal