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Author Topic: just got me a code reader and i need help Cstang5.0 ¯ Member # 4925 posted                              I just got me a code reader and the code 31 came up does anyone know what might cause this it book said it was evp or pfe circuit below minimum voltage it is a 88 mustang 5.0 Thanks [ December 11, 2005, 10:51 PM: Message edited by: Cstang50 ] -------------------- 88 VERT slow sold 89 coupe stock ; ) 02 yukon 05 focus Posts: 1638 | Registered: Oct 2004  |  : Cstang5.0 ¯ Member # 4925 posted                              ttt -------------------- 88 VERT slow sold 89 coupe stock ; ) 02 yukon 05 focus Posts: 1638 | Registered: Oct 2004  |  : BlackNGold CaliforniaFords.com Moderator Member # 655 posted                              EVP=EGR valve position sensor... EVR=EGR vacuum regulator solenoid... I'd check if the EGR is blocked, and make sure it's got vacuum and if the EGR position sensor is sticking.... Good luck! -------------------- -SLOWER TRAFFIC KEEP RIGHT- Posts: 5132 | From: Bay Area, CA | Registered: Dec 2001  |  : Cstang5.0 ¯ Member # 4925 posted                              thanks -------------------- 88 VERT slow sold 89 coupe stock ; ) 02 yukon 05 focus Posts: 1638 | Registered: Oct 2004  |  :

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