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knock sensor
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  1. Troubleshooting
    Hi I've got a 99 gf8 wrx. Some of my cars intercooler piping was leaking, so I replaced it all. The pipes look fine, they're all secure etc. I've checked over it all so many times. But now, the check engine light is on. And whilst I was revving it in neutral (to see how it was running)...
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