Sorry guys need some advice.

I bought an "N" plate wagon cheap last week but it has a boost problem.

Basically it doesn't have any!! The turbo is working fine but where the car should be taking off at about 3000rpm it just feels as though it's hesitating till approx 5000rpm then the revs pick up as it should do at 3000rpm.

If I pull a small pipe off the boost control regulator thingy on the drivers side inner bay in front of the strut housing the car overboosts but flies in between overboosts, hence saying the turbo is working.

I am not convinced the pipes to the controller thingy are plumbed up right too. Can anyone tell me where each pipe should go in relation to the actuator/turbo/inlet manifold/regulator thingy etc etc...??

 

I am struggling on this now...

Had a look tonight at a V reg facelift model but the set up was different altogether.

On my car I have a 3 port boost solenoid fitted but one of the bottom connectors has ne pipe going to it. Is this my problem??

Please help

 

bottom pipe just goes back to atmosphere, usually plumbed into the air intake pipe somewhere but no matter, wouldn't cause the overboost. (just make sure there are no air leaks in the intake pipe.)

The top of the three port (the smaller bent pipe) should be going to the boost source (the compressor cover) the side exit port just above the one that hasn't got a pipe on it should go off to the wastegate actuator.

 

Thanks for the info.

Unfortunatley I have checked it out and the pipes are plumbed up as you describe.

Maybe the solenoid is knackered??

 

https://www.scoobynet.com/general-te...tting-out.html

have a look at this thread i had the same problem.

andy

 

sounds like your boost solenoid valve is fooked,just make sure you have not overfilled it with oil,if it is over filled clean all pipes to the solenoid and make sure they are free from oil,if you have oil trapped in the solenoid connet the green d check plugs under the drivers side dash,ign on then pull off the pipes and flush the soleniod out with meths and meths ONLY dont use anything else or you will damage the valve

 

Cheers guys.

I took a friend of a friends impreza out for a quick run tonight and am now convinced I am getting no boost at all!!

I will try cleaning out the solenoid and all pipes tomorrow evening and let you know the result.

Thanks again

 

Had a quick look today..

I connected the actuator direct to the turbo but car was pretty much the same. Then the pipe blew off and I had overboost city..

After putting all that back together I removed the std re-cir/dump valve but again this made no difference at all.

Only thing left now is brake cleaner in the solenoid thingy. Will buy some in the morning and give it a whirl.

 

Getting depressed about it all now!!

I have removed and checked every boost pipe and there was no problems.

I have removed the boost solenoid, cleaned it out with carb cleaner and checked for the brass inset in a pipe.

I have reset the ecu by disconnecting the battery for an hour or so.

But still I have the loudest slowest Subaru in the Bridgend area!!!

I do ocassionally have a red warning light coming on the dash but cannot find any black connectors in the loom to give me a code, I have found the green ones though.

Think I need to fit a temporary boost gauge to see what is happening with my boost.....

Like I said, getting depressed about it all now!!

 

Have you replaced the boost control solenoid yet

 

Changed the boost solenoid last night - No difference.

I have also tried another air flow meter and still same.

My red warning light next to my left indicator light arrow was om all the way home from work today, but like i said earlier I can't find the black plugs under the dash for a fault flash code. Only the green ones.

How many wires are on the plugs and what colours are they??

 

they will be there the wires mate

you may have to take the removable panel under the steering wheel off to found them as there well hidden near the top of the steering colum

hopr this helps

ste

 

Yeah I did that.

I found 4 black black plugs hanging down and two black plugs nowhere near each other taped up with covers over the ends of them.

Only two of them fitted together, plugged them in as per the instruction on jollygreen monster but light didn't flash a code so disconnected them.

Trouble is I think there was the remnants of a redundant car alarm under the dash too!!

Hence why I asked what colour wires and how many pin connectors they are??

Anybody know??

Thanks.