GM EGR solenoid and AMC EGR valve

Discussion in 'Injection Tech' started by Geniusblock, Mar 7, 2017.


  1. Geniusblock

    Geniusblock Farmall Cub

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    I'm in the process of putting a GM TBI system on my 258. I have the EGR solenoid. I hope someone has a better feel for how the ECM controls this circuit. Is it as simple as putting the vacuum line onto the EGR valve? And the ECM doesn't care who it's plugged into? Or is the vacuum requirements different for those dissimilar components?
     
  2. Bill USN-1

    Bill USN-1 Moderator Staff Member Moderator

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    Do you need the EGR or just want to connect it.
    It won't work unless you also run the VSS.
    The VSS needs to be close to right.
    For the EGR you just connect manifold vacuum to one side of the solenoid and the EGR to the other side.
    The ECM will turn on the solenoid when the specific parameters are met.
     
  3. Geniusblock

    Geniusblock Farmall Cub

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    Thank you sir. Outstanding info here. I have a VSS. Don't have to run it. Wondered if I should or just not.
     
  4. Bill USN-1

    Bill USN-1 Moderator Staff Member Moderator

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    It's not needed but...
    If you think your going to try and run your inline 6 on the V6 bin, then your going to need all the sensors so the error code won't pop, including the knock sensor.
    Since you don't need it and you should have a custom tune for your engine, I run just what's needed plus the VSS as shown in the parts required FAQ.
    I run VSS on all my stuff if it will fit.
     
  5. Geniusblock

    Geniusblock Farmall Cub

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    I would like to get a custom tune when I get that point. Do you do the chip for the 16144288 ECM?

    ~GB
     
  6. Bill USN-1

    Bill USN-1 Moderator Staff Member Moderator

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    Yes I can.
    But keep in mind, just because you have it , doesn't make it a good choice to use.
    You would be much better off just spending the $30-40 to get the 7747 ECM.
    That 4288 was a very limited use ECM and may be hard to find a replacement should it go bad.
    Also, there aren't many bin files to chose from for tuning.
     
    Last edited: Mar 8, 2017
  7. Geniusblock

    Geniusblock Farmall Cub

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    I just knew you were gonna say that. :yes: OK... I'm going to proceed with my install. Work on getting a 7747.
     
  8. Geniusblock

    Geniusblock Farmall Cub

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    30-40 I would spend. Ebay has them up around 70. Small town with a very small JY. Know any other sources for the ECM?
     
  9. Bill USN-1

    Bill USN-1 Moderator Staff Member Moderator

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    car-parts.com
    once you pull up the list, go to the page with the asterisk by the page number. That will be the page with the lowest listed price.
     
  10. Geniusblock

    Geniusblock Farmall Cub

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    Another question. I have the E2000 fuel pump. My understanding is that it puts out 80 to 100 psi? The TBI system likes 12-15. But there is a regulator in the TB? is there a way to check that, since the only place to check pressure is on the section between the pump and the TB so I would expect to see 80pounds there.
     
  11. Bill USN-1

    Bill USN-1 Moderator Staff Member Moderator

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    pumps do NOT put out pressure. They pump fuel at the pressure set by the regulator.
    The E2000 is capable of pumping fuel up to about 85psi.
     
  12. Geniusblock

    Geniusblock Farmall Cub

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    Bill, thanks for your help so far. Got this thing fired up today. Even with the 4.3 bin it runs much better. But it has a bit of a skip or a miss every 10 seconds or so. I look forward to a custom tune. Haven't driven it yet. I need to wire in the VSS and the neutral safety switch. So question, can I just tap into the wire for the neutral and Y it in to the ECM before it heads up the column to the ignition switch?

    Got a few emails out for a 7747 ECM. Haven't heard back from any of them yet.

    The only trouble I had was no fuel. Took me a few hours of hot wiring and testing to come to the conclusion that I had no fuel coming through the pump. Couldn't figure it out. Finally it dawned on me that I had clamped off the fuel line to cut in the pump. I'm getting senile.
     
  13. Geniusblock

    Geniusblock Farmall Cub

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    I think I figured it out. The Jeep NSS grounds out in neutral or park and the ECM is looking for a ground so that should work.
     
  14. Bill USN-1

    Bill USN-1 Moderator Staff Member Moderator

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    Correct, Just ohm it out and make sure it's a solid 0 ohm ground.
     
  15. Geniusblock

    Geniusblock Farmall Cub

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    Think I got a grounding issue. My tach is bouncing around like crazy. Engine misses with the bounces. I'm thinking the ECM thinks the engine is reving and dumping fuel. smells rich. feels rich.

    Bill, got a 7747 in the mail. I'm hoping for a custom tune from you. I guess I paypal you and we go from there?

    Mark
     
  16. Bill USN-1

    Bill USN-1 Moderator Staff Member Moderator

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    Start with plug wires.
    None can touch the motor or any other wiring.
    They should not be any of the wire/spiral wound.
    Just a good carbon suppresion wire.
     
  17. Geniusblock

    Geniusblock Farmall Cub

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    The previous owner put a dui distributor with Live Wires. I believe they are a spiral core wire. Should I replace them with a different wire?
     
  18. Bill USN-1

    Bill USN-1 Moderator Staff Member Moderator

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    Start with proper routing and looming.
    You can use zip ties snugged up on the wires as separators.
    One large around the four and then little ones between each wire, then work down to 2 pairs, then one.

    Look in the end of the wire to see what it looks like.
    Also take an ohm meter and read one end to end and see what it reads.
     
  19. Geniusblock

    Geniusblock Farmall Cub

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    Man I'm struggling with this one. The tach bounces up. The more rpm the more and higher it bounces. Engine stumbles with it. It throws code 45 if I take it for a drive. I've cleaned and ohmed all my grounds and plug wires. Tried to loom the plug wires but it's tough. There's not much room with the large cap distributor in the middle (straight 6). Tested my Ignition module. Sure seems like it's getting some electrical coupling. But I haven't found it yet.
     
  20. Bill USN-1

    Bill USN-1 Moderator Staff Member Moderator

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    Is the distr properly phased?
    Are there any arc tracks in the cap or on the rotor?
     

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