Boost leak? Anyone in Cornwall with a test kit??

[newsh]

Left my pressure tester at home So if there's anyone in Cornwall with one that fancies a meet up?
This is a strange one, the car drives quite well untill above 5psi when the whooshing gets louder and the performance drops off, it still boosts but at 15psi it feels less fit than at 5psi.. which is not right... when I floor it it'll boost to 26 or 28 but rapidly drop and by 4,000 rpm its dropped to 20psi. Sometimes its going into overboost lurch mode.. I think it was actually going pretty well the other day cos I had a go with a Maseratti and really piised the guy off, which made me laugh a lot, he was basically going backwards and so disgusted that he had to pass me on the inside down a slip road to save face. I laughed for about 5 mins then , flushed with sucess pulled in and gave the wastegate spring an extra turn (well 2 actualy) the next time I floored it it hit the end of the boost gauge (past 30psi) and blew off the small tube that connects to the carbon can valve. I fixed this and carried on after turning the screw back out again but I'm sure its not been the same since. Cant see any leaks but may be the DV (Bailey) sticking or the silly valve in the PCV again.. This car really does my head in sometimes..

[dan_b]

Newsh - sorry to hear about the boost leak, but your guilty admission of turning the wick up and blowing the boost gauge off made me laugh!

[newsh]

Newsh - sorry to hear about the boost leak, but your guilty admission of turning the wick up and blowing the boost gauge off made me laugh!

Then I have fulfilled my purpose this day Dan

I'm not sure about this, it seems like a boost leak but maybe not, DV and one way valve are suspect, as is the Lamda. I'm going to read the blinks in a minute, its great being on holidays, you can do what you like anytime

[newsh]

It blinks 1111 ECU, oh dear

[Dpicariello]

Where abouts in Cornwall are you?
I'm in Saltash. I have a test kit but am only around until tomorrow as I'm away for a few days. You're welcome to come and use it if you want.

Let me know.

Dan

[s2dude]

It blinks 1111 ECU, oh dear

Doesnt sound too good Newsh, but could it be your Map sensor is fooked..or the line has blown off it inside the ECU

[newsh]

Cheers Dan, I'm near Redruth so about 100 miles round trip? I'll maybe get my lad to stick mine in the post as he's at home at the mo.

S2dude, yeah, maybe the MAP sensor or the line to it? I'll have a look.

[Dpicariello]

Yeah, you're way down there in middle earth!
Well, if you are up here, the offer stands. Good luck with sorting the problem out.

Dan

[newsh]

Yeah, you're way down there in middle earth!
Well, if you are up here, the offer stands. Good luck with sorting the problem out.

Dan

LOL, yeah not too many orcs about luckily
Anyway thanks again for the offer but seems like I've sorted it
Took motor fuses out then the ECU, popped the top off and had a look, no obvious probs gave the eprom a push into its socket, put it back together and read the blinks, the 1111 was gone but I had 2111 (rpm sensor) started the engine and got 4444 (no faults recorded)
Took it for a drive and its rippin again

My conclusion is that when I blew the small hose off the inlet manifold it went into limp home mode and I didn't remove the fuses for long enough to clear the fault. Either that or the eprom was not sitting right in its socket (not likely as its held in by a clip).

Anyway, its fixed (well, for a while, lets be realistic..) and I love my car again

[dan_b]

Good news Newsh

[newsh]

Good news Newsh

Thanks Dan!