(G) Overboost valve name?

Hi!

I have read all threads related to overboost valve problem, and I'm sure I'm one of lucky guys with Stilo that suffering from poor overboost valve design.

I'm going to move it up to battery try, and I want change it by myself.

Questions:

1. what is technical name of overboost valve - wherever I try to find no part with that name.

2. should I just replace it by myself (we have just one dealer, extremely expensive and with no much knowledge)?

Thanks in advance

1) overboost valve
2) if you want,not hardest job in the world

It's well worth taking some effort to find some really good tubing to accomplish the move. I checked with my dealer to see if a 'transfer' pack might be available but it would seem it isn't so you'll just have to buy the tubing yourself.

I say this because many converted JTDs, after a year or so, can experience overboost faults due to the new tubing starting to split

i am looking at ordering one of these, my engine is M50 1.9 JTD 85KW/115CV and the part number eper has listed is 55188059 - £44.90 (price perry's quoted inc vat). the pipes that go with it are 46792582 - £10.62,
46792583 - £10.68 not sue if you need those too it depend if yours are ok.

Dont you jtd guys think it might be of use to you if you used a stainless reinforced pipe on this ..or isnt there anything available

But have you checked if these are post or pre-move parts ?

If these are original tubing then they wont be much use unless they're quite long and you have to cut them to size. In that case they might be just the job

on eper they dont have an 'after' listing.

will looke again to be sure. i thought you would have to just cut to size.

they are definetley longer as opposed to shorter.

edit: my bad, i have found this 55203202 - ELECTRO-VALVE replacement for 55188059 doesnt give a reason for the change though. change date 04/2006

also 13000190 for a collar that is needed to connect the pipes to the valve but the pipes have the correct codes as above.

Hey guys,

I’m totally confused.
T1406 told that it is overboost valve. On ePER part no 55188059 is electro valve, on some Czech site I found beside that part number that it is EGR valve. I think EGR valve is something different than overboost valve?

Anybody know how to ask for part in shop?

From other threads, I didn’t understand if just putting it on battery box is enough even if part caused fault, or it is necessary to replace it and move it to the top?

Move it and give it a good clean at the same time. Only replace it as a last resort (normally suffers from getting wet!).

You should be able to see what it looks like from various images posted on the Forum. As you say, it's certainly NOT an EGR valve and is actually really quite small. Well, I'm sure you can look for yourself

This is the main thread if anyone is still looking

EGR and Over Boost are two different sensors. the overboost valve is behind the bottom of the front bumper and the egr valve is on the top left hand back of the engine. ive put 1 overboost valve on mine as it was full of water.

eper is crap

If you think its crap then give us the details so we can log into and get the same info as you techs do when working on cars in the work shop now that would be use full to say the least Eper for what it is has its uses and a darn site better than nothing at all

Agreed. after coming off the tools at a fiat dealer i am now dealing with Parts and Service, and Eper can be a total nightmare on times.

dont use eper for repairing/diagnosing cars

compared to other manufactuers systems its s*it