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AQ131C resistor wire

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wattsbarmike

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I have twin AQ131C engines with standard point/condenser ignition. Starboard engine has on occasion stalled at low RPM after running normally for hours, restarted after a 5-10 minute waiting (cool down?) period. Never stalls if I connect a jumper wire from the battery positive terminal to coil "+" terminal.
In troubleshooting this problem I've discovered that the resistance across the resistor wire between the alternator and coil for the 2 engines is not the same. Port engine resistor wire measures 42 ohms; starboard, 65 ohms.
Does anyone know what the correct value for the resistor wire is, and what the tolerance is before one should replace it?
 
#35 8730.jpgNot sure about the resistance.But the resistor in the line can go bad. Measure the voltage at the coil on both engines.
First when it's cold then again when it's warm.
Most marine coils need 9v.Not sure if that's true with your Volvos.
If the resistor is bad it can allow too much voltage and overheat the coil.Most marine apps(Merc,OMC) have built in resistor in the coil.
Volvo(some motors) and Chrysler used a resistor in-line.
Maybe I'm barking at the moon but it sounds like the coils getting hot from too much voltage.?????? Good luck,Jerry
 
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