PLEASE HELP..Timing on a 1993 OMC 3.0L Cobra, EST Ignition

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fonetek

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Hello All. Thank you in advance for your help. I have a 93 Sunbird 185SS with a 3.0L GM OMC Cobra. It was doing wierd things so a mechanic friend adjusted the timing. Bad mistake. So after reading from the SELOC online manual, it requires a timing shunt to compensate for the changes the icm module makes for the adjustment. Does anyone know how to make one? I tried my only local OMC repair facility and they were of no help. Thank you again for the help.

Tim
 

Don S

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Re: PLEASE HELP..Timing on a 1993 OMC 3.0L Cobra, EST Ignition

You can get the shunt from your local Volvo dealer, PN 885163. It costs just under 10 bucks.
 

fonetek

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Re: PLEASE HELP..Timing on a 1993 OMC 3.0L Cobra, EST Ignition

I cannot believe it. I am in the capital city of CA and no one has one... Any other ideas?
 

Don S

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Re: PLEASE HELP..Timing on a 1993 OMC 3.0L Cobra, EST Ignition

Have them order you one. Helmuts marine in the SF Bay are may have one in stock.
 

fonetek

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Re: PLEASE HELP..Timing on a 1993 OMC 3.0L Cobra, EST Ignition

Is there a way to do this with aligator clips etc. Instead of the shunt. I am going to order the shunt regardless, but need to time it this evening.

Thanks Don,

Tim
 

Don S

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Re: PLEASE HELP..Timing on a 1993 OMC 3.0L Cobra, EST Ignition

Not surre how you are going to put alligator clips on those 3 little terminals, but here is the way they have to be wired.

Shunt%20diagram.png
 

fonetek

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Re: PLEASE HELP..Timing on a 1993 OMC 3.0L Cobra, EST Ignition

I tried Helmuts, they are 1 week out. Any other ideas? I apprecite your help on this.....
 

fonetek

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Re: PLEASE HELP..Timing on a 1993 OMC 3.0L Cobra, EST Ignition

Thank you very much Don.
 

rads2rads

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Re: PLEASE HELP..Timing on a 1993 OMC 3.0L Cobra, EST Ignition

[/Bsame problem any one find out how to make jumper]
 

Don S

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Re: PLEASE HELP..Timing on a 1993 OMC 3.0L Cobra, EST Ignition

Start a new thread with your question.
 
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