The pictures that are/is containted in any/all wiring diagrams that us mere mortals can acquire -shows these as a simple transistor to assist our grip of the general concepts.Nothing more! Which, in reality, they are not! All of these are Darlington-amplifiers.A hybrid device! Thusly, much more AND! much less than stardard transistor design B-S applies here.īut the bottom line is that for the particular "fred-flintstone" application of putting this device on our cars does not require any of that cool engineering stuff. "nrkrell".You would be absolutely correct IF! this was indeed a critical application and if these units were just "transistors" as the name given by the factory's use of the word suggests. Let me try to answer the questions as accurately as possible: That has the module mounted on the side of the distributor, since these engines DO NOT have the ignition switched or controlled by the ECU! Please note > None of the above data applies to any Datsun-Nissan So now you know the truth.It is the lack of a good ground or high resistance in the ground patch for the transistor is actually what causes it to burn-up in most cases.Īccess a quality information-source (Mitchell, Alldata, Clymer, Haynes, Chiltons) to identify the wiring of donor-part (make-model-year) and wire it in.Yes, it's that easy!īe creative! Dare to innovate.So you won't have to limit yourself to the short list of "by-the-book" solutions. With these "three-pin" transistors, it EXTREMELY important to make sure that the "power-transistor" itself is actually grounded VERY,VERY WELL ! That's because the heat-sink itself IS indeed the "ground" connection.The "fourth" wire, so to speak! Some of these units will only have three wires or "pins" visible as connections. Translation.There will be four connections eriod! Just not all transistors will have this as obvious as a "fourth-wire". A fourth connection to do this may or may not be present in the form of a "fourth" wire.Since some of these "power-transistors" actually ground internally through the heat-sink itself, thus eliminating the need for another wire-connection The list of useable-replacements for this transistor is as follows.Īny Datsun-Nissan with any device that even remotely looks like it might be a Transistor mounted close to the coil from 1984 and newer that DID NOT! have D.I.S.Įxamples: 1984-1989 Z31 ZX and ZXT, 1990-1998 Stanza-Altima,1991-1999 Sentra(both 1.6 and 2.0 engine), any VG-30 SOHC from 1984-1989(pick-up, 200-SX, etc.).The list goes on and on!Īny of these useable devices are wired as follows, Period! No exceptions !!ġ-wire for negative in-put signal(from the ECU to switch the transistor on- and-off).ġ-wire for the high-current negative out to the coil negative terminal.Īnd finally a ground, because the unit is going to "amplify" a ground, the transistor itself MUST !! have a good ground source to "pull" the high-current signal "down". So all these power-transisters do is "amplify" the ground-on-off signal coming from the ECU.Enough to handle the coil's higher amperage needs. It's the fact that the ECU itself simply can't handle switching all of the power some high( or higher) current devices might draw.Like the ignition coil. Remember that in 99% of all applications, the outputs from any ECU, on any car, are just switching a "ground" signal on-and-off.Nothing more! which is to protect the ignititon-ouput circuits of the ECU from the tasks of handling the high-current switching for the coil. They may not look the same.****, most of them actually look totally different!īut they ALL ! work the EXACT same way to do the exact same thing. There are many other "power-transistors" from other Nissan cars that will work just fine as a replacement for the original-type unit. Give me a vote as to if I should submit this one as an article or not: ase mat More semi-useless info.Well maybe not so useless!
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |