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Why would a control module burn out in 15 min?

I have a 1987 S10 pu with a 4.3ltr v6. It has HEI dist with coil in cap.When it runs it backfires and runs ruff at 1500 rpms or higher. At an idle it runs smooth. I have replaced cap,rotor, wire from cap to module and coil. It has no vacuum leaks.
I changed module and it started. still has same problem.

Why do you think the module is bad? I noticed that you didn’t say anything about changing spark plugs. You obviously have some car smarts, with some more info i might be able to help.

This entry was posted on Sunday, February 28th, 2010 at 4:31 am and is filed under module. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

4 Responses to “Why would a control module burn out in 15 min?”

  1. most like out of time or a bad short
    References :

  2. Cyberdyne Industries on February 28th, 2010 at 10:28 am

    Why do you think the module is bad? I noticed that you didn’t say anything about changing spark plugs. You obviously have some car smarts, with some more info i might be able to help.
    References :
    15 yr ASE Cert Master Technician

  3. did you change the module? if so did you use the contact lube that came with the module? sounds like you did not THE CONTACT LUBE IS A MUST !!!!!
    References :
    26 years of pulling wrenches

  4. It needs a 350 small block dropped in it.
    References :

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