Boost stops at 1.4bar - N75?

[newsh]

Sounds like N75 is already unplugged.

[hunker7]

oh 2.1 2.2 you will never see..

2.1/2.2bar absolute, so 1.1/1.2 gauge.

[hunker7]

It's 2.1/2.2 absolute assuming stock etc, 1.2/1.2 gauge.

If you're referring to the dash then that is absolute and 1.4 is equal to 0.4 gauge which is what you would see with the N75 unplugged or if it's in limp home mode. Sounds like you've got a problem and need to pull codes.

Yes, I was getting 2.1bar absolute before, now 1.4bar absolute.

pull codes? vagcom won't show any error codes.

[rxl]

oh 2.1 2.2 you will never see..

[rxl]

Mine is stock, well, AAN should se 2.1/2.2bar on full boost afaik.

So I should see 0.4bar if I unplug N75?

if its stock its the right boost.. or do you have any other problems?

[Ross]

It's 2.1/2.2 absolute assuming stock etc, 1.2/1.2 gauge.

If you're referring to the dash then that is absolute and 1.4 is equal to 0.4 gauge which is what you would see with the N75 unplugged or if it's in limp home mode. Sounds like you've got a problem and need to pull codes.

[hunker7]

Mine is stock, well, AAN should se 2.1/2.2bar on full boost afaik.

So I should see 0.4bar if I unplug N75?

[rxl]

Hi. I have a problem, my AAN won't boost past 1.4 bar (gauge), sometimes will tick to 1.5 and that's it. As before, it juddered when reaching 1.4/1.5, after I changed fuel lines, it just stops boosting, but runs without any problems otherwise. Before I had vacuum in the tank.

Just checked all the usual hoses that might have cracks, nothing, refitted them with new fasteners. I did notice oil in Michelin man hose

No error codes coming up either.

After reading on here and other places, N75 can be tested by removing middle vacuum line, and it should boost past 1.5 if faulty, correct me if I'm wrong, and if electric plug is removed I shouldn't see more than 0.4 bar?

Thanks a lot for help in advance

P.S. Don't be harsh, this is my first Turbo car

what boost do you need to see? what setup do you have?
if the wasgate spring is stock you will only have 0.4bar bost...
if you boost that hi it will not bet the n75...

[hunker7]

Hi. I have a problem, my AAN won't boost past 1.4 bar (gauge), sometimes will tick to 1.5 and that's it. As before, it juddered when reaching 1.4/1.5, after I changed fuel lines, it just stops boosting, but runs without any problems otherwise. Before I had vacuum in the tank.

Just checked all the usual hoses that might have cracks, nothing, refitted them with new fasteners. I did notice oil in Michelin man hose

No error codes coming up either.

After reading on here and other places, N75 can be tested by removing middle vacuum line, and it should boost past 1.5 if faulty, correct me if I'm wrong, and if electric plug is removed I shouldn't see more than 0.4 bar?

Thanks a lot for help in advance

P.S. Don't be harsh, this is my first Turbo car