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Car Forum / Dodge / Dodge Trucks / January 2006A question to settle a discussion
Ok, folks, a friend and I were discussing the first generation Chrysler electronic ignition. He says you can use one as a transistor ignition module by connecting a set of points to pin # 4. I disagree. There's a 12 pack of Pepsi One riding on who is right. Thanks, folks! Budd Budd I swaped my 72 Dodge 318 to a transistor by doing this. Took a module from a 73 318 van. Not sure about the pin numbers though. Also had to add a different resistor block. Made it a different PU in a hurry. Better low end torque and it cleaned out the carbon etc in about a week. Bob AZ Personally, I think it was one of the best systems ever made and should have been adapted to Chrysler computerized cars just to give a less expensive ignition repair. Crank trigger input to a computer run timing program then to the ECU and then output to run the coil. The computer would be cheaper to replace since it could use a smaller trigger transistor. Budd > Budd > [quoted text clipped - 4 lines] > week. > Bob AZ > Ok, folks, a friend and I were discussing the first generation Chrysler > electronic ignition. He says you can use one as a transistor ignition module [quoted text clipped - 3 lines] > > Thanks, folks! If you connect a set of points to pin 4 then you have effectively bypassed the electronic ignition and turned it back into a standard point type ignition since pin 4 is what the big transistor actually controls, so you are correct Budd.  SignatureIf at first you don't succeed, you're not cut out for skydiving > > Ok, folks, a friend and I were discussing the first generation Chrysler > > electronic ignition. He says you can use one as a transistor ignition [quoted text clipped - 9 lines] > ignition since pin 4 is what the big transistor actually controls, so you > are correct Budd. How can that be when pin # 4 is one of the pins to the control side of the transistor and not directly to a coil connection? The transistor would act like a backwards diode. Pin # 5 is a redundant ground to the distributor pickup, so no point connection there would work. You're not making sense, Tom. Budd > > > Ok, folks, a friend and I were discussing the first generation Chrysler > > > electronic ignition. He says you can use one as a transistor ignition [quoted text clipped - 14 lines] > would act like a backwards diode. Pin # 5 is a redundant ground to the > distributor pickup, so no point connection there would work. My mistake. I forgot about the screwed up pin out numbering of that ECU and my manual does not number them and it was late and I just counted around the connector. As for pin 4, it needs a voltage to be applied and removed there to trigger the ECU and a set of points directly connected to ground (as most are) would not supply that and therefore have no effect. SignatureIf at first you don't succeed, you're not cut out for skydiving >Ok, folks, a friend and I were discussing the first generation Chrysler >electronic ignition. He says you can use one as a transistor ignition module [quoted text clipped - 5 lines] > >Budd Yeah, right, like wer're supposed to believe you have any friends! beekeep At least my "friends" won't sting me in a heartbeat. VBG Budd > >Ok, folks, a friend and I were discussing the first generation Chrysler > >electronic ignition. He says you can use one as a transistor ignition module [quoted text clipped - 9 lines] > > beekeep >At least my "friends" won't sting me in a heartbeat. VBG > >Budd That's just my girls kissing me. beekeep
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