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  1. Replies
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    I can only buy what's currently being sold. Not...

    I can only buy what's currently being sold. Not sure what the 369 module converts to these days. The D1984 is advertised as the "police" module. I assume that means it has a better performance...
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    I have experienced the engine backfire as the ICM...

    I have experienced the engine backfire as the ICM failed. Didn't know what it was at the time.

    Ran the experiment today, unplugged the CTS and the engine stalled and would not restart. Jumpering...
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    Thank you for the info.

    Thank you for the info.
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    Hmmm. I like that idea as an extra...

    Hmmm. I like that idea as an extra troubleshooting step. I do have data logging capability as well as chip burning. I will try the idea you suggested though. Seems worth a shot just to prove I am...
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    Thanks for the info Jim. I had black smoke coming...

    Thanks for the info Jim. I had black smoke coming out the exhaust when the engine lost power. The black smoke could be the ignition cutting out or a super rich condition. I would not think that the...
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    Thanks for the reply. True that I have two temp...

    Thanks for the reply. True that I have two temp sensors, one for the ECM and one that runs the gauge and electric cooling fan. Part of the problems I have been solving come from using a donor...
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    Yes, code 15. I do have a temp gauge and it was...

    Yes, code 15. I do have a temp gauge and it was reading normal. I am going to test the wires, end to end, before replacing the CTS. I ordered a replacement ICM, just to be safe. My spare is pretty...
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    Engine Cutting Out

    Hi all,

    Trying to troubleshoot an issue before shot gunning parts. The question isn't the TBI, per say, but related. I'm happy to repost in a different forum if needed.

    I have a 1990 Police 5.7...
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    I saw their transducer and gauges. Quite over...

    I saw their transducer and gauges. Quite over priced like all their other products. :)

    I found a different brand gauge/transducer combo that is inexpensive. It's listed for fuel, oil, hydraulic,...
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    I do have a pressure gauge installed under the...

    I do have a pressure gauge installed under the hood. I would love to have one in the dash, but no way I am running a pressurized fuel line into the cab. I was wondering if I could use an Autometer...
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    No worries on the injectors. I am running 65...

    No worries on the injectors. I am running 65 lb/hr ones. Flow matched and serviced.
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    Thanks for the reply. Update: I spent some...

    Thanks for the reply.

    Update: I spent some time looking very closely. I found some issues with the wires to the injectors and repaired them (one had a cut halfway through it). I also found a bare...
  13. Rebuilt TBI Fuel Injector (not the throttle body)

    I have a 9C1 5.7. I have the injectors cleaned when I rebuilt the TBI. I just bought a set of serviced and flow matched injectors off eBay. The seller has a 99.5 rating with thousands of sales. I was...
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    Engine stalling

    I have a 1990 9C1 5.7 in my Land Cruiser. It has the 1228746 ECU (came with the engine). I almost feel like starting over with a 7727 ECU just so I can better read and mod everything, but it hasn't...
  15. Thread: Timing Issue

    by srgould41
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    I am so upset. I found the issue with the...

    I am so upset. I found the issue with the RPM/IAC. Wiring.

    Firs, a big thanks to all who added comments! I appreciate everyone's desire to help. I really do.

    Backing up, a recent trip through...
  16. Thread: Timing Issue

    by srgould41
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    The problem started last week. It did have some...

    The problem started last week. It did have some issues the week before that where when going through a mountain pass at high throttle position and the TCC locked the ECM went into limp home mode. I...
  17. Thread: Timing Issue

    by srgould41
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    I have attached two logs. One from my drive then...

    I have attached two logs. One from my drive then one from an idle only test.

    Edit:
    By the way, the ECM has a chip header installed so I can burn tunes. It's a 9C1 motor. I think I started with...
  18. Thread: Timing Issue

    by srgould41
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    I went back through logs again. My old logs...

    I went back through logs again. My old logs showed spark advance in the 30's and 40's with an occasional high of 51. My logs from a drive on the day this started showed spark advance between 60 and...
  19. Thread: Timing Issue

    by srgould41
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    Thanks, some good advice. I will find my spares...

    Thanks, some good advice. I will find my spares this morning and do some research. I have a spare coil and ignition module so I can test each part one at a time. I went through the logs again and two...
  20. Thread: Timing Issue

    by srgould41
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    That's about what I thought. Could the ESC be...

    That's about what I thought.

    Could the ESC be doing this?

    Thinking on the worn distributor gear I can see how it could retard timing and make for unreliable numbers, but I would not think the...
  21. Thread: Timing Issue

    by srgould41
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    When replaying the last log I noticed the spark...

    When replaying the last log I noticed the spark advance varies from 36 to 54 degrees. Is that right? Should it be that high at idle?
  22. Thread: Timing Issue

    by srgould41
    Replies
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    14,052

    Rebuilt engine in 2017. I used the original...

    Rebuilt engine in 2017. I used the original distributor with new stuff in it. Could very well be the gear is worn. It did look good enough to reuse when I rebuilt the motor.
  23. Thread: Timing Issue

    by srgould41
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    14,052

    IAC. That could definitely be an issue with the...

    IAC. That could definitely be an issue with the bouncing idle. I wonder if the timing would be affected that much with the 400 RPM swing? The IAC is 3 years old, but even new parts do go bad. I will...
  24. Thread: Timing Issue

    by srgould41
    Replies
    16
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    14,052

    Timing Issue

    Hello,

    I am chasing an issue on my 1990 5.7, 1228746 ECU. Yesterday it was acting like it had a vacuum leak, idling about 1850. Today it started and idled normally except the RPM was bouncing from...
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    Hiya Dave! I know it can read codes. I was...

    Hiya Dave!

    I know it can read codes. I was trying to avoid having the laptop with me on whole day wheeling trips, though. I don't remember if Tuner Pro can connect with the engine already running...
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