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Thread: Purge solenoid ignoring speed and airflow limits

  1. 3 Weeks Ago #1
    ttls1
    ttls1 is offline
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    Default Purge solenoid ignoring speed and airflow limits

    While I was doing some idle tuning I noticed the purge solenoid was opening and adding unwanted air. For some reason only the min temp value B0501 is operational. Anything I set B0502 and B0503 seems to have no function which I need to prevent it from opening when stationary at idle. Has anyone come across this issue and found a workaround? I have tried a full flash and still no luck. Engine is an LQ4 with 1MB LS1B green & blue connector PCM. Running COS 3150003. The solenoid is definitely working as the temp parameter does control it.

    Click image for larger version.  Name: Purge parameters.png  Views: 145  Size: 54.5 KB  ID: 24996

    Click image for larger version.  Name: Purge trend.png  Views: 150  Size: 89.8 KB  ID: 24997
    Last edited by ttls1; 3 Weeks Ago at 10:35 AM.
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