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Old 11-22-2011, 10:23 PM   #1
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Evaporative Emissions Valve

A few days ago i was in the parking lot with a couple buddies and he reved his car, so i did mine, and 1 hour later my check engine light came on. I got a code reader and it was a code for, Evaporative Emission control system valve. So realisticly i over reved my car. Any solutions to solve this problem, any type of help would be appriciated.
(i won the rev competition :] )
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Old 11-23-2011, 07:09 AM   #2
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Re: Evaporative Emissions Valve

1. Using a scan tool, command the purge solenoid to activate. Listen or feel for a clicking coming from the purge solenoid. It should click once, or on some models it may click repeatedly.

2. If it doesn't click with scan tool activation, unplug the connector and examing the solenoid and connector for damage, water, etc. Then check for battery voltage on the feed wire with the key on. If you have battery voltage, then ground the control side manually using a jumper wire and see if the valve clicks. If it does, then you know the solenoid is working properly but there is a problem with the control circuit. If it doesn't click when you manually ground it, replace the purge solenoid.

3. To check for a problem on the control circuit (if the solenoid tests okay and you have voltage to the solenoid) plug the solenoid back in and remove the control circuit (ground) wire from the ECM connector (If you're unsure how to do this, do not attempt). With the ground wire removed from the ECM, turn the key on and then manually ground the Purge valve control wire. The solenoid should click. If it does, then you know there is no problem with the control wire to the solenoid and there is a problem with the ECM purge solenoid driver circuit in the ECM. You'll need a new ECM. However if it doesn't click, then there must be an open in the wiring between the ECM and and the solenoid. You must find it and repair it.
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Old 11-23-2011, 07:11 AM   #3
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I'd get a tuner if you don't have one. Then you can set exact rev limits and make sure this doesn't happen agin
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