17965 driving me MENTAL

[gregorcupra]

I have had the 17965 overboosting code for at least a year now.

Many of you will know or will have experienced the symptoms. Car pulls great plenty of power , then all of a sudden shoots to 5 psi/ limp mode.

I have replaced MAF and N75 and yesterday I disconnected all of my intercooler piping and reconnected using 2 hose clamps on every joint.

Went out tonight and drove for a while only for it to happen again and when I got home and checked it I yet again got 17965 flashing up.

Absolutely raging. Any help much appreciated as Id like to get this sorted once and for all

 

[turbo009]

I'm no help,and hope you sort it. Curious tho what map you running ?

 

[gregorcupra]

No idea mate, car came mapped

 

[turbo009]

O OK mate,well hope you sort it quick

 

[tarzan]

hade the same problem in 5.gear going up a hill.but i have a boost controler so i turned boost down a bite. maybe you should look over the rest off the vacum lines

 

[old yella]

are you getting any other codes?
had the same fault but also had a water temp code!
there modified now green in colour i think instead of black?
changed that and now all ok
maybe worth a try!

 

[gregorcupra]

nope thats the only consistent code i get ! Whats modified green instead of black ?

And Tarzan , where did you get your boost controller ?

 

[old yella]

seat/vag modified the sensor because of problems they change the plastic bit of the sensor colour from black to green on the modified ones.

 

[tarzan]

nope thats the only consistent code i get ! Whats modified green instead of black ?

And Tarzan , where did you get your boost controller ?

got mine from my mate is a hallman boost controller you cant get it from ebay no uk suppliers just over seas from the states i have the hallman PRO RX

http://www.hallmanboostcontroller.com/applic.html

the green modified he means is the temp sensor it`s known to fail so when you change it go for the green one not black

 

[tarzan]

if oyu have vag-com you can log block 115 to see requested vs actual boost

 

[gregorcupra]

ive got vagcom but to be honest i have no idea how to do that !

And anyway , what would the log tell me ?

 

[tarzan]

when you log you can see what boost you get and what the ecu request. if it`s over what ecu says then you will hit limp mode and get the fault code you have.have you never done some logs with the car??

 

[cupramillo]

You can also get a Forge Boost Controller, this badboy

http://www.forgemotorsport.co.uk/content.asp?inc=product&cat=0029&product=FMUNOS

10% SCN discount aswell, heard good things about it and its Forge so its built to last with great after care! Going to get one myself soon

 

[andycupra]

what if the car is operating correctly but that the map is too aggressive. (ie runs too much boost).
Have you tried reducing the boost a bit?

 

[gregorcupra]

I have no idea how I would reduce boost ?

Also , with a boost controller am I not just masking a problem ?

 

[tarzan]

I have no idea how I would reduce boost ?

Also , with a boost controller am I not just masking a problem ?

thats right but if the map
is to aggressive and hit limpe mode you can reduce boost with a boost controller.
best is to log the car and put the logs up here and let pepole se them to see if they are right.think you still have a leak some where

 

[gregorcupra]

ok thanks very much tarzan.

Can you briefly tell me how best to log this and I will get it up tommorow ?

 

[tarzan]

ok thanks very much tarzan.

Can you briefly tell me how best to log this and I will get it up tommorow ?

this is the blocks i used to log

003-020
118-32
115

 

[JB!]

i et the same problem in 5th @ 4200rpm under full load. shoots down to 5psi then back upto 17psi.

blown up 2 plastic recirc valves, so have a forge 007p to be colleced and a new n75, we'll see if that cures it.