V6 Discussion and questions about the base carbureted or MPFI V6's and the rare SFI Turbo V6.

Code 42

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Old Oct 31, 2004 | 08:35 PM
  #1  
Damien00677's Avatar
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Joined: Nov 2002
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From: Dubuque, IA
Car: 2006 'Nox 91 Camaro RS 91 1500 Silv
Engine: GM 3.8L, 305 SBC, 350 SBC
Transmission: Auto, auto, auto
Code 42

Alright guys, my car has started to intermittantly throw a code 42

"Fault at electronic spark timing circuit or fault at direct ignition system, or fault at fuel cutoff relay"

I am inclined to think it is the fuel cutoff relay since I have also had an intermittant hard start situation where I have to let it crank for a while ( although oddly the light and the problem never coincide)
What do you guys think, and how do I fix it?
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Old Oct 31, 2004 | 09:26 PM
  #2  
Trickster's Avatar
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From: conway, s.c.
Car: 1989 Iroc-Z
Engine: 5.7L TPI
Transmission: 700R4
Your code 42 = Electronic Spark Timing (EST). This chart may help you.
Attached Thumbnails Code 42-code42v.gif  
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Old Oct 31, 2004 | 09:27 PM
  #3  
Trickster's Avatar
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From: conway, s.c.
Car: 1989 Iroc-Z
Engine: 5.7L TPI
Transmission: 700R4
page 2
Attached Thumbnails Code 42-code42va.gif  
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Old Oct 31, 2004 | 10:18 PM
  #4  
Damien00677's Avatar
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Joined: Nov 2002
Posts: 613
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From: Dubuque, IA
Car: 2006 'Nox 91 Camaro RS 91 1500 Silv
Engine: GM 3.8L, 305 SBC, 350 SBC
Transmission: Auto, auto, auto
Thankyou, but could you post the diagnostics aids part that is for an intermittant problem. I believe it says refer to "intermittants" in section "B" Because my problem is definately intermittant.
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Old Oct 31, 2004 | 10:27 PM
  #5  
Trickster's Avatar
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Joined: Sep 2003
Posts: 6,127
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From: conway, s.c.
Car: 1989 Iroc-Z
Engine: 5.7L TPI
Transmission: 700R4
I will e-mail them to you as there are several pages of them.
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