Code 12, revisited

IwantMKIII

WVU MAEngineering
Jun 12, 2007
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Perkasie, PA
Went to check timing again tonight, and what do ya know code 12 pops up again.

My idle has continually been high, got it down to ~900-1000RPM depending on the day and timed to 10*BTDC

What i know:

No G and/or NE signal

G1 - Red CPS wire
NE - Blue
G- - Black
G2 - Yellow

My suspicion lies in an SAFCII wire tap coming loose. If not, how do I check these? What voltage/Resistance should be at these terminals?

BTW: car runs fine, no missing/stumbling. Biggest issue is high idle and i have rather significant power loss when car is at op temps vs. right before (water temps before: 130~165*F).
 

Nick M

Black Rifles Matter
Sep 9, 2005
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U.S.
www.ebay.com
It doesn't cause a high idle, but it can cause a stall or no start. I would look at the wiring and connections of the pick up before thinking the pickup itself doesn't work.