solenoid

My beloved 1996 J30 did not pass its 18thNew York State inspection. The check engine light problem shows an error for the solenoid. Transmission place replaced the solenoid and still gets the check engine light (emissions light??). They said the fluid is really yukky and bad. I use my J30 as...

Has anyone that owns a 08 G35 (Journey model) had any issues with the variable timing solenoid? I had a diagnostic done and they said that was my issue so i bought the new part and had it installed but my car still shut off on the freeway and is idling funny. Im confused after the diagnostic was...