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Old 04-13-2004, 07:01 PM   #1
subygt1998
Scooby Newbie
 
Member#: 59463
Join Date: Apr 2004
Location: Ozstrarliaya
Vehicle:
1998 Forester GT
Green/Silver

Default Check Engine...Arrgghhh

Howdy

I live in australia and we seem to have really bad fuel ( a BIG thank you to the oil companies....and we still pay top dollar for the 98 RON fuel even though is cr*p....), and I have a problem with the "Check Engine" light being on for most of the time while driving. When I went off Optimuck, and onto 98 RON Caltex Vortex which seems to have reduced the problem to almost zero.
The light was coming on in most driving conditions previously...

The dealer seems to think ( after recently replacing my air mass
sensor ) that it is the knock sensor. I have heard of resetting the
ECU and dont know how much of a help this will be.

Do other Forester/Suby owners have great respect for their Dealer mechanics or are they not worth the trouble?

I dont really drive the car hard at all, so its not like I have
thrashed it........

Any suggestions?

All help/wisdom welcome!!
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Old 04-13-2004, 11:02 PM   #2
DaMax
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Member#: 54788
Join Date: Feb 2004
Vehicle:
2004 Forester XT
Java Black

Default

The dealer's mechanic should be able to connect the computer to a read out and determine from the error codes stored in the ECU,
what the problem is. If he cannot, I would find another Subaru
mechanic. Is the car running OK? Sometimes these lights come on simply because the driver has not put the fuel cap back on tight; i.e., evap emissions. I don't know what the requirements are for emissions in Australia but this is a frequent complaint in the states. The solution is to tighten the cap after every fill and the ECU will reset itself after several starts and the check engine light should go off.
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Old 04-13-2004, 11:02 PM   #3
Hondaslayer
think you
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Member#: 4562
Join Date: Feb 2001
Chapter/Region: NWIC
Location: Auburn, WA
Vehicle:
1995 Legacy LSi
1998 Forester, lifted.

Default

Is your GT an OBD2 car?? They should be able to pull the code from teh ecm and it will tell exactly what it is. If you can find out what codes you have then I may be able to help.

a P0325 would be a knock sensor malfunction...
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Old 04-13-2004, 11:31 PM   #4
GTCloud
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Member#: 41819
Join Date: Aug 2003
Location: Perth, Australia
Vehicle:
01 GT
White

Default

Hi SubyGT,

I may be wrong, but I think Caltex Vortex is only 95 RON. I use BP Ultimate and haven't had any dramas. If you do a search on the MRT forum, there have a been a lot of debates over fuel. Optimax seems to have a bit of a bad name.

Cheers
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Old 04-14-2004, 08:29 PM   #5
subygt1998
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Member#: 59463
Join Date: Apr 2004
Location: Ozstrarliaya
Vehicle:
1998 Forester GT
Green/Silver

Default

Howdy

Well I'm of to see the dealer this arvo and will get them to check the ECU to find out what codes I'm getting.

Optimuck apparently has an appalling name for RON fluctuations
so BP seems to be the preferred drink of choice. GTs love 95 RON and over so going on GTClouds suggestion may do the Ultimate thing and run on that.

Thanks everyone for the feedback....I have also heard that a dodgy knock sensor can make it go bang if you go fang....

Cheers,
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Old 04-14-2004, 10:53 PM   #6
subygt1998
Scooby Newbie
 
Member#: 59463
Join Date: Apr 2004
Location: Ozstrarliaya
Vehicle:
1998 Forester GT
Green/Silver

Default

Hi

Been to the dealers - the diagnostic returned "22 - Knock Sensor"
so time to replace it....ouch....$150 later ( incl labour )

At least its sorted.

Thanks for all the help

W.
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