Thread: HELP Emissions test failure !
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Old May 15th, 2008, 09:59 PM
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salvageV6 salvageV6 is offline
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Lightbulb
Your EGR most likely isn't working.

You need to check for vacuum and voltage.

Find out at what TPS voltage or RPM, above idle, the EGR PWM voltage in that chip is supposed to start to work at.

Do you have ported heads or any EGR tract modifications?
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