Re: edit: Evaporative Emissions Control System leak..should I care?
EGR system leak will fail emissions testing if your area has it. My EGR (aka secondary Injection pump for VW) valve threw a light. The system from what I understand is ONLY for emission control. With my car, the EGR valve pumps in air to dilute the exhaust fumes before expelling out the tailpipe. What's even more fustrating is that the system only kicks in during cold starts, and doesn't last for more than 5 minutes max (or was that 5 seconds....). Anyway, I'm still trying to find the root cause of why my light is on. Common problems are anything from leak in hose, the valve broken (and therefore cannot release the pressure), relay switch that triggers the mechanical parts to function, bad wires that's screwing up the relay switch, or the worst, air pump not working (rare).
Oh yeah, I HIGHLY doubt it's the damage from the rear.
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