code 42
 

What should I be looking for when you have a code 42.....spark timing...est? help

RE: code 42
 

https://blazerforum.com/photo_view.asp?file=0;66177
Here is the trouble tree for that code. HTH Korey

RE: code 42
 

can anyone tell me a eaiser way, the answer I have is alot of greek.....

RE: code 42
 

I looked at the lay out in the post. And its basic trouble shooting with yes and no response to the next point.

This is a typical layout of trouble shooting, one issue at a time. There is no easy oh its this or that.
One of the painful gremlins of trouble shooting electrical issues.
One thing at a time, and it could end up being more then just one thing.
But until you get to the first part, the next one wont show up.

RE: code 42
 

That circuit has no real easy fix, you need to go through the process of diagnosis. Korey