i recently replace the iac ( idle air control valve. on a 2001 Volvo S40. because the code read back P0507. I follow the instruction given by the mechanic . 1. to reset the code via the scanner, 2. to remove the ecm fuse 3. to disconnect the battery ground terminal .. I did all of the steps so but the check engine light is still on.. do you have any suggestion what could be the problem.
Feb 24, 2011 at 2:44 AM