code 42

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Jan 15, 2010 | 06:56 PM

guido7834

Thread Starter

Melting Slicks

Joined: Mar 2008

Posts: 2,453

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From: SC

code 42

After sitting for a few weeks, last week I took the 87 to work on a mild day. Fired right up in the AM but when leaving for home, I had to crank it 3 times before it started. The first two cranks sounded like it does if you turn the ignition with the engine running, kinda grinding sound.(but it was NOT running) It started on the 3rd try and I got the service engine soon light (code 42). It ran fine. I have ran it twice since with no issues. What could be the cause of something like this?

Thanks

Jan 15, 2010 | 07:14 PM

WW7

Le Mans Master

Joined: Aug 2007

Posts: 8,735

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From: WV

Here is what code 42 says..Electronic Spark Timing Circuit (EST)

Did you plug the EST wire back in after timing the engine??..WW

Jan 15, 2010 | 07:20 PM

guido7834

Thread Starter

Melting Slicks

Joined: Mar 2008

Posts: 2,453

Likes: 347

From: SC

Quote:

Originally Posted by WW7

Here is what code 42 says..Electronic Spark Timing Circuit (EST)

Did you plug the EST wire back in after timing the engine??..WW

Yes, it is plugged in. What would make it happen just once?

Jan 15, 2010 | 08:03 PM

AGENT 86

Team Owner

Joined: Jan 2003

Posts: 20,317

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From: Summerland B.C. Canada

Have you had that connector, unplugged at all, since the last time you had a battery terminal off ?
Just wondering if it was a stored code, since a grinding noise, could be something else going wrong.

http://members.shaw.ca/corvette86/Code%2042.pdf

Jan 15, 2010 | 08:18 PM

guido7834

Thread Starter

Melting Slicks

Joined: Mar 2008

Posts: 2,453

Likes: 347

From: SC

Not been unplugged since removing battery terminal. But, come to think of it, I did replace the ignition module last summer. Could have something to do with that?