Ignition Coil Questions

[Huw Powell]

> I've got a no spark situation on my 88 80q I5 2.3L. I'm checking the voltage 
> between the positive terminal on the battery and each terminal on the ignition 
> coil. I got +12vdc to both side with the key off. When I turn the key on it 
> drops down to about .3 volts per side. While cranking it stays down at the .3v 
> level.
> 
> I also tested where the ignition coil cable connects while the car is off - 
> +12vdc. Didn;t want to take a chance testing that while cranking.
> 
> Is this correct?

I think to test the coil, you measure the resistance of the primary and 
secondary windings (go/no go).

You might want to get a timing light or something and measure the high 
tension lines.

The hall sender (on the dist) could be bad/have broken wires/etc.

The transistor driver for the coil could be bad, too, I suppose.

-- 
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/