406 2.2hdi Limp home mode and turbo probs

[memphisto]

Hi guys,
first post on here but having had a few problems with my 406 google searching seemed to always bring up this forum to look a people withthe same types of problems.

Anyway just had my 406 defapped finally which was the cause of most of my rpevious problmes, however when they were defapping it and reading the fault codes a turb one came up. Now I didnt write down the code, just the description

"boost pressure sensor short to plus or value to high"

now i have had a slightly leaky intercooler for about 2 years, which the guys at the garage advised could be the problem, however the car drove great on the way home and has now gone into limp home mode again, more worryingly theres a whistle noticeable when flooring it which seems to be coming from the silver turbo overflow pipe to the top right of the engine.

having read this thread 3 times

http://forums.preloved.co.uk/fuseact.../22b77c08.html

the symptoms seem to be roughly the same, ie. oil in the bottom pipe (there is a small leak of about 50p after i stop) which there most definetly will be as the booom right of the intercooler has been leaking very slightly and oil has been sprayed out.

I did however the other night clean out the air filter and unplg the denso boost sensor, when i plugged it back in the anti pollution light went off for about 20 miles then came back on again in limp home mode.

so my plans for the weekend are to check the pipes for leaks, due to the whistle, clean out the bottom pipes and intercooler, take off and clean out the maf sensor and the boost sensor conacts in the hope that all of the above combine to cure the problem.

I am also going to chage the fuel filter as my wife ran the car out of diesel a couple of weeks ago and on another thread that has been advised.

does anyone else have any other ideas of things i should check ?

I was going to buy a cheap code reader as well, however having read a lot on that subject it seems they wont read the codes on my 2001 model ?


all help appreciated.


memph