MK5 Golf GTI

All Things Mk5 => Mk5 General Area => Topic started by: divweir on January 13, 2011, 05:38:45 pm

Title: turbo boost sensor
Post by: divweir on January 13, 2011, 05:38:45 pm

ok guys car developed a fault yesterday  warning light on 
the guy reset it car was fine for a few hours now car is stuttering

i thought it could be coil pack took it back to garage now the guy
says he thinks it boost sensor is this a expencive part. oh it was
exhaust warnig ligh that came on . its not on now
do you think hes guessing

Title: Re: turbo boost sensor
Post by: chowgar on January 13, 2011, 05:44:40 pm

the light is on a key cycle anyway so it would have turned itself out after a bit... what was the code before you had it cleared?

Title: Re: turbo boost sensor
Post by: PDT on January 13, 2011, 05:47:02 pm

The diagnosis you received seems a little vauge. You need to find what the actual code was/is and post it up on here.

Worth checking the vagcom section on here and finding a local member with VCDS to help you.

Title: Re: turbo boost sensor
Post by: divweir on January 13, 2011, 05:59:07 pm

not sure of code my wife is dealing with it
he says fault came up he reset it then the same fault came up again
i will try and get the code tomorrow he dosent think vw will have part in stock
so i will have no car over weekend :surprised:

Title: Re: turbo boost sensor
Post by: PDT on January 13, 2011, 06:16:30 pm

Maybe get a 2nd opinion or find the code before ordering bits. A faulty boost pressure sensor (map sensor) is relatively cheap but dont go changing it without a genuine diagnosis.

Personaly I would have driven the car and datalogged the map sensor to check the values first, if this was inconclusive I would remove the sensor and use a vac-boost pump to apply a calibrated amount of boost to the sensor while testing the output of the sensor at various levels of pressure and vaccum to determine if this is the fault.

Title: Re: turbo boost sensor
Post by: cmdrfire on January 14, 2011, 11:31:11 am

My charge air/boost pressure sensor failed ages ago, resulting in a dismal lack of power (natch). Was replaced under warranty, but as I recall it wasn't too expensive - maybe £60 for the part and fitting? Was some time ago so can't be sure.

Title: Re: turbo boost sensor
Post by: divweir on January 18, 2011, 05:59:20 pm

got the car back changed boost sensor 112£ car seems to be ok
hope yhats it sorted having no car over the weekend was expencive
oh  and the aftermarket warrenty i  have dident cover the sensor   :surprised: :surprised:
dont know why i bother with warrenty they never seem to cover the bits that go wrong