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How many injector driver's are in the 165 ecm? If I can even get mine to start it runs on 1-3-5-7 while 2-4-6-8 are doing nothing. Header tubes are cool
That's what I was told, any idea then why 2-4-6-8 are not firing at all? I have spark to all 8 cylinders and the noid light flashes on all 8, fuel pressure is at 45 where it has been since I did all the engine work a few years ago. Injectors are brand new and ohm out at 15 to 15.3. Volts at injector 12.1, at ecm 11.9 but the battery was dropping a bit so I'm sure both positions would read the same volts. Also, new distributor, wires, and plugs.
That's what I was told, any idea then why 2-4-6-8 are not firing at all? I have spark to all 8 cylinders and the noid light flashes on all 8, fuel pressure is at 45 where it has been since I did all the engine work a few years ago. Injectors are brand new and ohm out at 15 to 15.3. Volts at injector 12.1, at ecm 11.9 but the battery was dropping a bit so I'm sure both positions would read the same volts. Also, new distributor, wires, and plugs.
Not sure why you'd suspect the injector driver.
Sadly I don't have any experience with your model car (I have a 94 and 95), so I can't help you with specific troubleshooting of your issue. Hopefully someone can tag in and help ya out.
Sadly I don't have any experience with your model car (I have a 94 and 95), so I can't help you with specific troubleshooting of your issue. Hopefully someone can tag in and help ya out.
I had read in the search where someone suggested the person who was having the same problem as mine may have one of the injector drivers that was bad. I have been all over that car looking for a loose or broken connection and came up with nothing. I feel it is a broken connection but all wiring in the ecm is correct. Thanks for trying anyway.
Did you use the 165 harness complete out of an '86 or newer chassis? Do you have an '86 or newer FSM for that year? If yes look at S181 and S185 for '86. Maybe you could 'jumper' and confirm run on 2 - 4 - 6 - 8 and might confirm maybe an ECM issue. An '87 is similar but with different splices S105 and S101, '88 is same as '87 and now strangely enough '89 wiring diagram is somewhat different. Same circuit #'s with same splices but displayed differently inside ECM.. This is from an '87, same for '88 and for '86 splices are noted as different #. The second is from an '89 FSM. I can see why others might have assumed 2 drivers! The first image is cropped a it short but you can see 2 Injector Control vs the '89 image.
I'm afraid I don't have the newer fsm . I do have the one for my car and the davis repinning instructions. I did the upgrade to the 165 years ago so it was all good until whatever has happened now. I have been over the ecm connector wiring a half dozen times in the past month and I am going back out in a few minutes and look at it again. I have a new ecm coming this afternoon but I want to be 100% sure everything is right before I put it in. Maybe you can answer this question, on the connector pin connections are any of the ground wires specific to a certain location or is any ground okay for any of the ground locations? I'm going to look over your diagrams and see if I can see anything as compared to my car.
I just thought of something from your suggestion and I don't know why I didn't think of it myself. If I swap the injector wire positions in the harness the engine should start firing the side that has been dead if it is the ecm.
I'm afraid I don't have the newer fsm . I do have the one for my car and the davis repinning instructions. I did the upgrade to the 165 years ago so it was all good until whatever has happened now. I have been over the ecm connector wiring a half dozen times in the past month and I am going back out in a few minutes and look at it again. I have a new ecm coming this afternoon but I want to be 100% sure everything is right before I put it in. Maybe you can answer this question, on the connector pin connections are any of the ground wires specific to a certain location or is any ground okay for any of the ground locations? I'm going to look over your diagrams and see if I can see anything as compared to my car.
Just sort a how to jumper circuit 467 & 468. Your '85 FSM uses same circuits for injector wiring. I believe all '85 - '89 ECM are mentioned to ultimately ground to G104 through a multitude of splices. Just 'jumper' 467 & 468 for 'RUN'!!
Your FSM likely shows '85 splices for 467 & 468 are inside the car very close to the pass-through grommet. The '86 and newer for the '165 show them to be in the harness still but maybe under-hood.
***If you feel an FSM for a later year might help you and I'd think the 6E section would be very different mention a year you might like. I can accomplish that. There's reports that the '87 has a 'free link' but I've never even considered a 'peek'. I have any year. If interested drop me an email using the link under my user ID.
Thanks for the offer, I may have to take you up on it but first I want to try the jumper and see what that does. I switched injector wires, (D15 & D16) and now the only header tubes that are firing is 1 & 3. I switched them back and nothing changed. I know it has to be firing on other cyls, but the other 6 tubes are cool and oddly enough, the two 1 & 3 are too hot to touch which I feel is because the mixture is lean. I have an a/f ratio gauge on the car but it won't run long enough to get a reading. I'll try the jumper now & see what happens.
Update:
Part of the problem was due to all the fooling around the plugs got fouled. I am putting in a new set today and see where it goes from there. I did find a couple ground wires in the ecm that were positioned wrong, that was my doing while I have been messing with the car. I'm going over all the pin positions again just to be sure everything is in the correct terminal
ecm question
