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Misfiring on all cylinders? HELP!

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Old Jun 24, 2005 | 09:10 AM
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Subaruski42o's Avatar
Subaruski42o
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Joined: Jun 2003
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From: Rockford, IL
Car Info: 98 RS
Misfiring on all cylinders? HELP!
I just got my CEL pulled and its came up with this.
135 O2 sensor heater circuit. Bank 1 sensor 1.

Then also it is misfiring on all 4 cylinders.

The car is a 98 2.5 RS. It does have a proECm aftermarket chip and Greddy EVo II exhuast.

Any ideas on what is causing the problem?
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Old Jun 24, 2005 | 09:25 AM
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soggynoodles
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From: Palo Alto, CA
Car Info: Something german
For the misfires you might want to check the spark plugs and wires.
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Old Jun 25, 2005 | 10:53 AM
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John2.5RS
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From: SoCal
Car Info: 98RS coupe, Ver. 8 STI pwr'd
Lightbulb That would be...
Your front O2 sensor has got a short. replace your front O2 sensor, reset your ecm and that should fix the problem.
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Old Jun 25, 2005 | 12:45 PM
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Subaruski42o
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From: Rockford, IL
Car Info: 98 RS
Thanks i replaced the O2 sensor and reset the ecu and everything is good now. thanks
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Old Jun 27, 2005 | 07:14 AM
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John2.5RS
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Car Info: 98RS coupe, Ver. 8 STI pwr'd
Thumbs up
Good to hear, glad I could help.
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Old Jun 27, 2005 | 12:49 PM
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cudaeh
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From: Automotive racist capitol of the world, Detroit.
Car Info: 2000 impreza 2.5 rs
how is the proECm working out? I am thinking about picking one up. is it worth it?
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Old Jun 27, 2005 | 09:20 PM
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Subaruski42o
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From: Rockford, IL
Car Info: 98 RS
Had it on the car when it came with it. So i Dont know the difference
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