Max Turbo boost = 0.4Bar

[JonasGranlund]

Hello!

Earlier today I noticed that it was sounding as a hard blowing noice from the engine when I started to put some boost on the engine, and it dont run as fast as it use to.

When I look at the Boost it dont get up in above 0.4 even if I push it really hard on some of the higher gears from 2500-4000 RPM. Earlier Im sure that it have measure around 0.8.

Its hard to describe the noice that appear from engine under load but it is really like if it is leaking air instead of boosting up the preassure.

Have anyone had this problem or heard about it?

Best regards

Jonas

Ps. I dont get any fault code wich I think is strange Ds

[wross996TT]

Leak or bad DVs...my guess.

[boli 996]

Where exactly are the dump valve placed?(pic)

I was with Jonas this weekend and we could read out a fault number P1250. this code says:

- Boost Pressure Control Deviation - Above Limit

and the one of the faults could be:

Adjust by pass flaps, but what is the "by pass flaps", is it the same as dumpvalve?

It's also a warning for a bad brake pad, could that course the low boost preassure?

Bad brakes---> Low boost preassure????

[smistry007]

Where exactly are the dump valve placed?(pic)

I was with Jonas this weekend and we could read out a fault number P1250. this code says:

- Boost Pressure Control Deviation - Above Limit

and the one of the faults could be:

Adjust by pass flaps, but what is the "by pass flaps", is it the same as dumpvalve?

It's also a warning for a bad brake pad, could that course the low boost preassure?

Bad brakes---> Low boost preassure????

Take a look at this link:

http://www.imagineauto.com/tips1.htm

It is the step-by-step install guide from imagineauto.com.

Hope this helps.

Sameer

[JonasGranlund]

Thanks alot for the help!

After my last question the car started to go really odd and rpm traveled between 500 and 1500RPM and att the same time the PSM lid came on togheter with the ABS falure...

This was a few day before I took my car to a DIY garage... And to my big surprice I noticed that one of the hoses from the turbo had come loose.

And this only within 100 miles from after I had my Porsche on a total engine removal (at a big Porsche dealer), I think that this is under all criticism...

After I put the hose in place the PSM and ABS lid dissapeared. (how come?)

And about the other fault that I had from the start...

Just as boli said it was the by pass flaps that didnt close as they should, I sprayed them with a little 5-56 (tried to not spray on parts that get hot) and moved the flaps til they started to go as they should.

After this the car loaded 0.7Bar

Thanks alot for the help guys.

Edited April 10, 2006 by JonasGranlund