Need Help! Optispark problem or not?

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Oct 18, 2004 | 05:40 AM

#21

Y2kHawk05

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From: Liberty Hill, Texas

Quote:

Originally Posted by Fastbird93

Hmmm.....I don't know which one that one is then. The only major junction I know of there is a S113 which is a ground junction for a lot of accessory items. Give me some time and let me look through my service manual electrical schematics and see if I can come up with anything. I need a good starting point though. Can you make absolutely sure that the two wires going in are coming from the coil wiring setup??

I checked the wires and they are definitely going from the Jacobs coil into the stock wiring. It would help if the previous owner (a very great friend who recently passed away) would have kept the owner's manuals and documents of the parts he purchased. I am halfway working in the dark. A thought is the wires are probably the power and ground for the coil itself. (Duhhhh! Why didn't I think of that earlier?) My next steps are to check it by the breakdown as suggested by your link. I will keep you posted. Test's to run: Spark plugs & Wires, Ignition Control Module, Coil and Opti?

Oct 18, 2004 | 05:46 AM

#22

Y2kHawk05

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From: Liberty Hill, Texas

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Originally Posted by rimrat12

That sounds more like a spark plug issue then a opti...I know when my opti went out it was doing it at all RPM's not just at a certain point...when I had a bad spark plug it would do it at certain RPM's thats just my $0.02

PS...it could be a vaccum leak now that I think about it too, I know when I had 2 vaccum leaks my RPM's were jumpin around like crazy even with I gave it gas...

Where were your vacuum leaks? I checked the physical condition & connection of all wires and everything came out good. I just replaced them last year (with GM OE & OE plugs) and now wish I would have gone with Taylors again/ with NGK's. I wonder if my Aftermarket coil is an overload for the stock wires..... I can't believe there is much difference in a 7mm wire verses an 8mm.

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