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ECM code 42

 
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Al Hasse
Member


Joined: 19 Nov 2005
Posts: 4379
Location: Bremerton, WA

1992 Chevrolet Camaro RS
PostPosted: Sat Mar 18, 2006 8:12 pm    Post subject: ECM code 42 Reply with quote
I have been getting ECM codes 32 and 42 for the last couple of weeks. Seems I have fixed the code 32 with a new EGR valve. Code 42 (Electronic Spark Timing) still wants to show up. All of my ignition parts are new, so I am stumped as to what else can cause this error.
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Twilightoptics
Hardcore (12sec Club)


Joined: 13 Jan 2004
Posts: 9191
Location: Auburn , WA

1987 Chevrolet Camaro IROC-Z
PostPosted: Sat Mar 18, 2006 8:16 pm    Post subject: Reply with quote
Make sure that the EST connector... not sure where it is on your rig... is plugged in. Single wire, usually brown with a black stripe, used for setting the base timing with a timing light.

So when you guys timed it, make sure that's plugged in. For starters.
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Al Hasse
Member


Joined: 19 Nov 2005
Posts: 4379
Location: Bremerton, WA

1992 Chevrolet Camaro RS
PostPosted: Sat Mar 18, 2006 8:36 pm    Post subject: Reply with quote
Thanks, but that's the first place I looked. Besides, when it's unplugged, my tach reads zero rpm.
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Al Hasse
Member


Joined: 19 Nov 2005
Posts: 4379
Location: Bremerton, WA

1992 Chevrolet Camaro RS
PostPosted: Sun Mar 19, 2006 9:25 pm    Post subject: Reply with quote
Al Hasse wrote:
when it's unplugged, my tach reads zero rpm.


My tach reads 00 when I disconnect the tach pick-up to the coil (white wire). My EST (tan/black stripe) wire is by my A/C box. Today I removed the distributor to replace the leaky o-ring, making sure to mark the rotor and the shaft when I pulled it out. When I replaced it, I was not able to set the timing, ran like ****. Idle is all over the place and backfire through the intake. Still the only code is 42. I figure either I am on the wrong mark on the harmonic balancer or I have a faulty distributor, I'll find out tomorrow.
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