Hey, Thanks guys for the help, first of all.
Ok, letÆs go over this.
FrankR said to test the transistor this way:
The power transistor has 3 contacts - labeled #1/#2/#3 from left to right. Connect the negative end of a 1.5v flashlight battery to terminal #2 on the power transistor. Connect the positive post of the flashlight battery to terminal #1. There should now be continuity between terminal #3 and terminal #2. When you remove the voltage from terminal #2 there should be no continuity between #2 and #3
If the transistor doesn't perform in the prescribed manner, replace it.
Frank .
And I got the same result as Shamer did:
I'm assuming that the terminal would be read left to right if you were looking at the Power Transistor as it is mounted on the coil tower , right? The 'transistor itself has them labeled as "IB", "G" and "OC". I ask this because I tested the the transistor the way I thought you'd traditional label them 1, 2 & 3 (looking at the terminals from the harness POV with 'OC' as #1, 'G' as #2 and 'IB' as #3)) and the transistor failed the test. BUT , if I reversed the connectors (IOW, 'OC' becomes #3 & 'IB' becomes #1) it passed the test. AAARGH!
But at the end of ShamerÆs problem, it turned out he did not have to replace the transistor
after all:
Well, I finally figured out what was up.
It wasn't the power transistor/ignition module.
It wasn't the ignition wires (though I'm tempted to install the ones I bought - NAPA carries some nice ones made by Belden )
It was the coil!
OK, that said, I tested the transistor the way conner said, and I got good spark out the coil.
I also did the test on the wires going to the distributor, with the harness disconnected
I got the voltages conner said would be there.
I also checked the voltages on the green & white wires while cranking the engine
And they did toggle from 0-5 volts. However, the white wire would read 0 or 12 volts
After I stopped cranking the engine depending where the engine stopped.
Anyway IÆm still at a loss as to what could be wrong.
It seems things are working the way they should.
I've replaced the coil, with a new one.
I swapped distributors with another one that I had.
I put in new coil & plug wires.
And did the tests.
But still have no fire. <img src="/forums/images/graemlins/confused.gif" alt="" />
I haven't replaced the transistor because the parts stores
around here don't have it, and the closest dealer is a two hour drive from here. But I guess I'll have to bite the bullet sooner or later. <img src="/forums/images/graemlins/zombie.gif" alt="" />
Thanks again <img src="/forums/images/graemlins/wink.gif" alt="" />
