Paul.Foreman

could someone in the know please explain to me how the boost solenoid works??

ive tried the trick connecting the green plugs so it cycles the electrics whilst cleaning it out with brake cleaner or similar. If i were to blow down one of the pipes going to it ,when it switches would air come out the other pipe?? i can hear it clicking away but am wondering if it is actually moving inside?

thanks for ur time

Paul.Foreman

its a two port solenoid vale on a 2002 sti type uk.

gravelexpress

whats wrong is it underboosting?

Paul.Foreman

yeah im only getting 0.5 bar and it sholud be at least double that. ive powered blown down both tubes and am not getting anything come out the other side.(i assume this is how they work), rang the garage again this morning and they wernt any help. does it sound like it is stiking inside . if so were can i source a new one from?
chers

gravelexpress

I had probs like this here are some posts

http://bbs.scoobynet.co.uk/showthread.php?t=336906

Paul.Foreman

ive checked the boost pipes , and they are as they should be. ive had it at the dealers and they reset a fault that had come up but every thing seems to be operating. im under the impression that the solenoid is stuck causing the wastegate to open up hence getting low boost. (i think).

Paul.Foreman

ive but cleaner in the pipe coming from the turbo side went for a spin still 0.5 bar boost. got back disconnected the pipe from turbo and the cleaner was still in the pipe. am i right in guessing the solenoid is goosed???

Paul.Foreman

heres one for u to remember. i have managed to cure the problem :-) i stripped the boost solenoid and found the nipple had come away from the diaphram done a tempory rempair and am now boosting to my hearts contenet. thanks for ur help .