Engine light on getting code 12

[Jim Sloan]

Off the top o my head...code 12 means normal operation.

Jim Sloan
leroy at sunflower.com
Syclone VIN# 1206
http://www.sunflower.com/~leroy
Lawrence, Kansas

> -----Original Message-----
> From: owner-gmecm at diy-efi.org 
> [mailto:owner-gmecm at diy-efi.org]On Behalf
> Of Keith
> Sent: Sunday, July 30, 2000 5:31 PM
> To: GM ECM mailing list
> Subject: Engine light on getting code 12
> 
> 
> This is on a 91 Syclone ECM 1227749 
> I just replaced the engine in my truck and now when I turn the key to
>  the "on" position the check engine light comes on. I short 
> out the A &
> B
> on the ALDL and get a code 12. I've checked the "M" on the ALDL and it
>  is not shorted and has 4.8V going to it. I tried a good 
> memcal and new
>  ECM and i still get the same code 12.
>  Does anyone have any suggestions on what to do now?
>  Is there a wire that i could have disturbed while replacing 
> the engine?
>  Thanks.
> 
> -- 
> Keith Gill F.A.S.T.
> Riverview, FL
> '91 GMC Syclone #2173
> '75 Oldsmobile Hurst/Olds
> '92 Nissan Sentra SE-R
> http://www.syty.net
> Direct Forum link -->>>
> http://www.syty.net/cgi-bin/fast-cgi/Ultimate.cgi?action=intro
> http://www.geocities.com/keith455
> http://home.tampabay.rr.com/keith455
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