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| Eighty Eight Includes the '97-'98 Regency and '96-'99 LSS Models |
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#1
03-08-2006, 01:51 PM
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94 olds 88 royale diagnostic codes 640 and 670
had it diagnosed and brought up codes 401 for egr flow and codes 640 and 670. the codes 640 and 670 as i was told are quad driver modules locate in the ECM. Quad 1 and Quad 4 failed. i understand other sensors and such but i have never run into this problem code 640 and 670. does the ecm have this QUad driver modules in it and do i need to replace the ecm to fix this?
thanks, tury Last edited by tury; 03-08-2006 at 07:26 PM. 
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