WHAT VOLTS SHOULD THE COIL READ DURING CRANKING?

1973 Dodge Truck

Tiny

bsam450

February, 25, 2012 AT 5:32 PM

When I turn the key on the test light on the positive side of the coil lights up. When I crank the engine over the light goes off. It seems to me when I let off the key it will then fire. Can you help me in the right direction.

FOUND 185 RELATED QUESTIONS

Repair

15 ANSWERS
4 IMAGES

3 Answers

Tiny

hmac300

February, 25, 2012 AT 6:34 PM

Replace the ballast resistor on the firewall. That sounds like your problem.

Tiny

bsam450

February, 25, 2012 AT 7:07 PM

Well I forgot to mention that I did replace the resitor on the wall and also the module box. It wouldn't even fire before that.

Tiny

hmac300

February, 25, 2012 AT 7:16 PM

Check gap of pickup coil in dist.008-.010" resistance of pu coil should be 400-800 ohms

Please login or register to post a reply.

Ignition Coil System Test Repair - All Cars
Ignition System Test Guide
Ignition Coil Replacement Ford Taurus