Andygreer

iTrader: (4)

Hi Guys.

Im still having a problem with my 2003 WRX.

When i am in 3rd 4th or 5th and am at around 5500Rpm if i let off the gas the car judders pretty badly. Now soem times this only happens at higher revs any thing above 5000rpm really.

I cleaned the Solinoid in the engien bay to the left of the altinator on this picture (not my car)

I have also done a clean of the system by connecting the green connectors under the dash and turing teh key on for 10 minutes. as instruced by Subaru.

The car is not mapped and it still does the same thing, andy F said he could hear a nock.

Can some one help i really dont want to take my car back to the garage again.....

GrantyBoy

what spark plugs you running and how are they gapped? Though this is mainly juddering when the car is accelerating, not when you let off the gas

Andygreer

iTrader: (4)

I have the ones that every one recomends i cant remember the type now, they were £50 platium things LOL


Denso i think.


8mm Gap just replaced 3 weeksago

Andygreer

iTrader: (4)

any one else?

jasonius

iTrader: (1)

If you're runnung NGK PFR7b's they're better at 0.65-0.7mm (not 8mm lol ).

Not sure this would be the cause of your problem however..

Andygreer

iTrader: (4)

that then, gapped tonight to 7.5mm see what tomorrow brings

scoobertron

has it only done it since the front mount was installed or a new dump valve or basicly when did it start doing it ?

Andygreer

iTrader: (4)

as i have said its not my engine bay that was just a example for the valve ive fitted

geordiewrx

have you changed the gapping on spark plugs yet?

scoobertron

IF youve fitted an hks ssqv then it needs to be adjusted ,sounds to me like the juddering is being caused by this.

Butty

iTrader: (2)

The boost solenoid isn't to the left of the alternator - that's the fuel vapour solenoid back to the tank.
Looking at that photo, the boost solenoid is where the small anodised blue thing is on the drivers side suspension turret.
What mods have you done to the car?
What else did Andy advise? Leaving it at being just a knocking sounds like half the story.

nick

Andygreer

iTrader: (4)

I checked the gaps ok all .7.5mm

Ben out with Alyn os ASP today he things it could be a mount possibly, but hes not 100% Sure, your right its not the boost solonoid it was just a air pipe , Ill remove the other tonigh, Its booked to tSubaru Monday if i cant sort it its still under warranty just dont liek going back ot the garage

AndrewC

I might have missed something here, but am I correct in saying that you have a front mount and a VTA dump valve? Also if the car is not mapped I assume the MAF is still connected?

Has anyone been out in the car with DeltaDash or similar logging the ECU when the juddering happens?

Andrew...