87 E 150 fault codes # 12 & 41/ ref

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tbone09 - 03 Apr 2007 06:07 GMT

6cyl. 300 4.9 o.h.v type:Y with a manual tranny 4spd overdrive. Went to get
it smogged an failed .Mechanic told me it was either 02 sensor or egr valve
checked egr and it opens and closes fine.Plus the egr is new.Idles perfect
it has never idle this good before .Use to surge when idleing and
sometimes die on fast stops.Hope this will help .Ialso have the VIR report
but I can't read it. again hope this helps .NEED TO PASS SMOG

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Happy Traveler - 03 Apr 2007 09:51 GMT

tbone: starting three separate threads for the same problem will not provide
you with a better response and only confuse the issue. Please stay with a
single one.

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