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Old 05-26-2016, 10:09 AM
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Blas Blas is offline
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Join Date: Sep 2002
Cobra Make, Engine: SPF#0760
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What is the current charge level of your battery?
What is the output from your alternator and Voltage regulator with the engine at +2500rpm?
Should be around +13.6V.
The MSD unit requires a minimum voltage to operate.
If your charging system is not working correctly and the voltage drops off when driving (ie: fans, lights, etc) the unit will shut down.
A classis failure mode for any mfr's electronics.
I assume you have checked all the power and ground connections for the box.

Also: When installing a new cap and rotor, be sure the connector on the top of the rotor is making good contact with the carbon contact on the cap. Not too much spring tension and not too little. If too little contact pressure, the car will run because the spark will arc to the caps carbon contact. But you will see carbon tracks on the cap. too much spring tension and you will destroy the carbon contact.
Hope this helps,

Blas
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Last edited by Blas; 05-26-2016 at 10:23 AM..
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