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how to perform a simple engine diagnostic scan on 94 VR V6

dlusnl

New Member
Joined
Apr 26, 2009
Messages
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Location
Hamilton NZ
Members Ride
vy hsv clubsport
sometimes the check engine light comes on whiles driving at highway speeds, i was told that it could be the oxygen sensor but i have yo make sure prior to fixing it, i found the little diagnostics box but not sure how to start doing the engine scan! any help is greatly appreciated.
 
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