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73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: jastur323 on February 09, 2017, 11:59:21 am

Title: Bypass electronic spark control
Post by: jastur323 on February 09, 2017, 11:59:21 am

I know how to bypass the electronic spark control but once you put the two wires together do you plug it back in or leave it unplugged? Thanks

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Title: Re: Bypass electronic spark control
Post by: Irish_Alley on February 09, 2017, 12:22:49 pm

to bypass it you unplug it, which should only be done for timing. once done you plug it back together

Title: Re: Bypass electronic spark control
Post by: Captkaos on February 09, 2017, 02:09:20 pm

Are you trying to bypass it permanently or set timing?

Title: Re: Bypass electronic spark control
Post by: bd on February 09, 2017, 02:12:31 pm

Please include Year, Make, Model etc.. when posting (http://forum.73-87chevytrucks.com/smforum/index.php?topic=5220.0)

Welcome to the site.  Do you have carburetion or TBI?

Title: Re: Bypass electronic spark control
Post by: jastur323 on February 09, 2017, 07:58:50 pm

Quote from: Captkaos on February 09, 2017, 02:09:20 pm

Are you trying to bypass it permanently or set timing?

Yes I want to bypass the electronic spark control permanently

Quote from: bd on February 09, 2017, 02:12:31 pm

Please include Year, Make, Model etc.. when posting (http://forum.73-87chevytrucks.com/smforum/index.php?topic=5220.0)

Welcome to the site.  Do you have carburetion or TBI?

1983 GMC High Sierra.


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Title: Re: Bypass electronic spark control
Post by: Irish_Alley on February 09, 2017, 08:03:12 pm

Why do you want to do that? But I imagine you can just leave it unhooked

Title: Re: Bypass electronic spark control
Post by: bd on February 09, 2017, 08:59:59 pm

jastur323, is your 83 High Sierra a California truck with feedback carburetor?

Title: Re: Bypass electronic spark control
Post by: jastur323 on February 09, 2017, 09:52:36 pm

No its not a California Truck and yes it has a carburetor all original with 89000 miles

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Title: Re: Bypass electronic spark control
Post by: bd on February 09, 2017, 09:59:51 pm

Once you connect the black and green distributor pigtail wires together, I believe the distributor connector remains disconnected from the harness running into the ESC module inside the cab.

Here is the source article:  Changing To A Non-ESC Distributor (http://www.73-87.com/7387garage/drivetrain/escrepl.htm)