Subaru Impreza Forum

SteveH · 28 Jul 2004, 03:19 PM

I have an 04-reg WRX Subaru, 5 months old which over the last 2 weeks keeps losing the turbo. BHP appears to drop by 50%. If I turn-off the ignition and re-start the Turbo works again. On a trip up north last weekend, the turbo switched off 3 times.

The Check engine light does not come on. Does anyone know whats going on ? the Subaru dealership is stuck ?

HELP !

skylight · 28 Jul 2004, 03:38 PM

Hello SteveH, firstly welcome to the site. If that is happening then i would just suggest giving the car back to the dealer and let them sort it out for you. I have a 04 WRX and would be devastated if that was happening.

Unsure what the problem could be but get it back to the garage... £20'000 is on this car :shock: :wink:

Just a thought :wink:

Nelson · 28 Jul 2004, 03:42 PM

This does bizarre mate

A Turbo that switches off is something I haven't myself come across before ?? Is it that its spooling just not going anywhere ?? It really could be a number of things but I am gonna go for the Boost Control Solenoid. I am not to sure what they are like on the Newage but this is a known problem with Classic Imprezas that the solenoid can get fouled up (especially when the engine oil is overfilled) and this can cause all manner of problems. As I say it could be a number of things ?? Turbo/Wastegate or ECU problem ?? My suggestion would be to get a Boost Gauge (if you haven't already) - pipe it in (not difficult honest) and see exactly what your boost is doing.

Hope this helps ?

KaraK · 29 Jul 2004, 07:37 PM

sounds like a problem not unkown on the VAG 20vT, where the ECU goes into "limp" mode and cuts boost back to negligible levels. Not heard of it happening on a scoob before tho. Usually caused when it thinks its over-boosting, so it could be a boost solenoid or sticking wastegate.

camn anyone spell WARRANTY ? :roll:

KaraK · 29 Jul 2004, 07:42 PM

if it is thinking it has too much boost then it won't nessicarily show the CEL, I had an intermittant solenoid problem on my 98 and I had no CEL either.

brizey · 03 Aug 2004, 10:41 AM

50%?

Sounds like wastegate pressure. Could be a sticky wastegate or intermittent problems with one of the vacuum lines.

28 Jul 2004, 03:19 PM	#1 (permalink)
SteveH Fresh Scooby Join Date: Jul 2004 Posts: 1	Loss of turbo on 04 WRX I have an 04-reg WRX Subaru, 5 months old which over the last 2 weeks keeps losing the turbo. BHP appears to drop by 50%. If I turn-off the ignition and re-start the Turbo works again. On a trip up north last weekend, the turbo switched off 3 times. The Check engine light does not come on. Does anyone know whats going on ? the Subaru dealership is stuck ? HELP !
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28 Jul 2004, 03:38 PM	#2 (permalink)
skylight Administrator Join Date: Apr 2004 Location: Here and S.Wales Posts: 13,155	Hello SteveH, firstly welcome to the site. If that is happening then i would just suggest giving the car back to the dealer and let them sort it out for you. I have a 04 WRX and would be devastated if that was happening. Unsure what the problem could be but get it back to the garage... £20'000 is on this car :shock: :wink: Just a thought :wink:
Offline

28 Jul 2004, 03:42 PM	#3 (permalink)
Nelson Dedicated Scooby Join Date: Apr 2004 Location: South West Posts: 2,659	This does bizarre mate A Turbo that switches off is something I haven't myself come across before ?? Is it that its spooling just not going anywhere ?? It really could be a number of things but I am gonna go for the Boost Control Solenoid. I am not to sure what they are like on the Newage but this is a known problem with Classic Imprezas that the solenoid can get fouled up (especially when the engine oil is overfilled) and this can cause all manner of problems. As I say it could be a number of things ?? Turbo/Wastegate or ECU problem ?? My suggestion would be to get a Boost Gauge (if you haven't already) - pipe it in (not difficult honest) and see exactly what your boost is doing. Hope this helps ?
Offline

29 Jul 2004, 07:37 PM	#4 (permalink)
KaraK Regular Scooby Join Date: May 2004 Location: Cumbria, UK Posts: 189	sounds like a problem not unkown on the VAG 20vT, where the ECU goes into "limp" mode and cuts boost back to negligible levels. Not heard of it happening on a scoob before tho. Usually caused when it thinks its over-boosting, so it could be a boost solenoid or sticking wastegate. camn anyone spell WARRANTY ? :roll: __________________ Not even in the face of armageddon - never compromise
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29 Jul 2004, 07:42 PM	#5 (permalink)
KaraK Regular Scooby Join Date: May 2004 Location: Cumbria, UK Posts: 189	if it is thinking it has too much boost then it won't nessicarily show the CEL, I had an intermittant solenoid problem on my 98 and I had no CEL either. __________________ Not even in the face of armageddon - never compromise
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03 Aug 2004, 10:41 AM	#6 (permalink)
brizey Fresh Scooby Join Date: Jul 2004 Location: Allen (outside of Dallas), Texas, USA Posts: 24	50%? Sounds like wastegate pressure. Could be a sticky wastegate or intermittent problems with one of the vacuum lines.
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