Bundy
Bronco Guru
- Joined
- Jan 10, 2009
- Messages
- 2,045
I have the Comp9000 Mallory Breakerless Unilite distributor on my 68' on a carbuerated 90's 302.
I am thinking my dizzy is done, or needs a new module. The votage was very very low at the neg side of the coil with the key on, yet was within Mallory's threshold when the optic module was blocked.
The truck also gets the most spark at the very end of the attempt- for example, when turning over turned to START it get's no spark but as soon as the key goes back to ON it tries to start. with the plug pulled it was very evident that the spark was better when not in START.
Is that the module going bad? is there anything else in the Unilite that can go bad? is it worth trying the module or should i look into a new dizzy
have 3 working coils, tried them all- new starter solenoid and the ignition works. The dizzy is the last thing to be assumed.
Help!
Edit: Testing with Multimeter
With Ignition ON-
Battery + terminal: 12.4V
Coil + terminal: 4.5V-4.6V
Cranking-
Coil + terminal: 10.5V
Coil - terminal: 1.8V
I am thinking my dizzy is done, or needs a new module. The votage was very very low at the neg side of the coil with the key on, yet was within Mallory's threshold when the optic module was blocked.
The truck also gets the most spark at the very end of the attempt- for example, when turning over turned to START it get's no spark but as soon as the key goes back to ON it tries to start. with the plug pulled it was very evident that the spark was better when not in START.
Is that the module going bad? is there anything else in the Unilite that can go bad? is it worth trying the module or should i look into a new dizzy
have 3 working coils, tried them all- new starter solenoid and the ignition works. The dizzy is the last thing to be assumed.
Help!
Edit: Testing with Multimeter
With Ignition ON-
Battery + terminal: 12.4V
Coil + terminal: 4.5V-4.6V
Cranking-
Coil + terminal: 10.5V
Coil - terminal: 1.8V
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