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Just Got Myself Into A 6...

Discussion in 'Builds and Fabricators Forum' started by rejeep, Feb 14, 2013.

  1. Jun 27, 2020
    Muzikp

    Muzikp Active Member

    Sacramento Ca.
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    The little pin bent down instead of pointing up (y) Course I've no idea where this thing he is holding goes or what it does :lol:
     
    fhoehle likes this.
  2. Jun 28, 2020
    rejeep

    rejeep Well-Known Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Rochester, NY
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    One of the prongs on the chip bent when I was installing...

    there are just so many benefits to EFI on a truck like this... carbs still have their place on the majority of my vehicles.. but the driveability is just night and day when it runs right.
     
    Muzikp and fhoehle like this.
  3. Jun 29, 2020
    rejeep

    rejeep Well-Known Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Rochester, NY
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    Well new chip didn’t do it...

    back at it.
     
  4. Jun 29, 2020
    Focker

    Focker That's a terrible idea...What time? Staff Member

    WA
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    :booo:
     
  5. Jun 30, 2020
    Chuck

    Chuck Sponsor

    Southshore Ma
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    Is it still running rich or is the idle high, or both?
    If it’s just the idle and the IAC counts are good on the chip you can manually adjust the TB.
    Do you have a reader?
     
  6. Jun 30, 2020
    rejeep

    rejeep Well-Known Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Rochester, NY
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    running rich... driveability is fantastic.. no complaints.. just some exhaust popping from running rich..
    throwing a rich code.

    running richer than the previous chip.. Block Learn number is right at 108 and staying there in closed loop..
    going to call Howell.. but he had suggested adjusting fuel pressure at the throttle body before..
     
  7. Jun 30, 2020
    Ohiowrangler

    Ohiowrangler Member 2023 Sponsor 2022 Sponsor

    Newark, Ohio
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    could you post a pic of your data list, we could more with numbers. Ron
     
  8. Jun 30, 2020
    rejeep

    rejeep Well-Known Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Rochester, NY
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    sure..
    im going to run it through some diagnostic tonight..

    first restricting the fuel pressure a bit to see what changes..

    Mvolt readings on 02 were all over, so its registering and Im going to assume for now its good.
     
  9. Jul 1, 2020
    Chuck

    Chuck Sponsor

    Southshore Ma
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    Sep 19, 2004
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    I would check the return psi before restricting fuel pressure, return should be zero. If you find 2 psi or above you have a return restriction this would cause the engine to run rich. What is your feed psi?
     
  10. Jul 1, 2020
    rejeep

    rejeep Well-Known Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Rochester, NY
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    I have a perm gauge on the feed.. running 12 psi
    looking for another gauge to put on return to check what you are saying..

    restricting the inlet pressure to ~10 psi got me to the correct Block learn number at idle
    but any throttle and it would stumble..

    no anomalous RPM signal.. watched that for a while last night

    sprayed motor down with carb cleaner and no RPM change so I'm assuming no vacuum leaks
     
  11. Jul 1, 2020
    Ohiowrangler

    Ohiowrangler Member 2023 Sponsor 2022 Sponsor

    Newark, Ohio
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    coolant temp sensor?
     
  12. Jul 1, 2020
    Chuck

    Chuck Sponsor

    Southshore Ma
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    Feed is spot-on at 12 psi. Restricting the feed line doesn’t tell you much especially if you know your feed psi. I’m interested in hearing the return results. Howell tunes the 6 cylinders well but not so much with V8s.

    I once got a super deal on a CJ with a V8 because the two previous owners couldn’t get it to run correctly. It had a Howell (GM) setup and halfway through my diagnostics I determined it was the tune (chip). Howell disagreed, said it had to be something else because their records showed it was tuned correctly. So I did a complete inspection testing every sensor and each wire running from the ecm to the sensors plus all grounds, including swapping out the ecm to a good known used one I had. Gave the results to Howell and they said, “well, I guess it’s the chip. They sent me a fresh tune and the engine ran fantastic.
     
  13. Jul 14, 2020
    rejeep

    rejeep Well-Known Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Rochester, NY
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    some updates...

    engine tune:

    I decided to throw back in the old chip.. truck is running way better than with the new program.
    still running rich, but I managed to get some (relatively) very good fuel economy this weekend.
    haven't really had time to work and diagnose more.. I have a feeling ill be in adjusting fuel pressure next time around.

    Under Seat Locker:

    couple of summer downpours and the aqualu tub starts acting like an boat.
    driver and passenger foot wells filled up something special.. nothing a solo cup couldn't handle. I do need to work on a more permanent drain plug solution that looks nice, but also lets the water out.

    I had the gumption this tome around to pull the passenger seat and check the under seat locker where the air system controls are. A non water tight lid and a watertight floor is not a good recipe. Put a 7/16 hole in the rear corner and will probably do the same in the front tonight.. it would soupy in there.. going to clean the connectors and put dielectric grease.. avoided a problem this time around..

    [​IMG][/url
    ]

    [​IMG][/url
    ]
     
  14. May 25, 2021
    rejeep

    rejeep Well-Known Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Rochester, NY
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    UPDATE..

    aside from tracking down a Wierd Noise I'm doing some minor surgery on the ignition system... AGAIN..

    I had my issues with the duraspark and frying units

    wired in a Mopar orange box and provided a full 12v (unballasted) to the system
    seemed to have fixed the problem for well over 1500 miles (last summers driving)

    Ive been experiencing some surging and just generally poor ignition with 1 non start and a shut down while driving. Thought it was the coil, but after putting a new one in I am experiencing more of the same issues.

    3rd time is a charm (I hope)

    I just bought a Petronix distributor for AMC V8's
    Simple 2 wire hookup going right to the coil. I have had some great success with these systems in my Land Rovers, both with native engines and the Dauntless V6.
    Its more exotic than my "keep it stock philosophy, but a replacement petronix unit takes up less room than a Duraspark or Mopar ignition box

    stay tuned
     
    fhoehle likes this.
  15. May 27, 2021
    fhoehle

    fhoehle Sponsor

    Harford Township, PA
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    I have had great success with Pertronix units in all kinds of IH, industrial and Jeep Dauntless applications. I do carry a spare unit but haven't used it.
     
  16. May 27, 2021
    johneyboy03

    johneyboy03 The green beast

    Quebec, Canada
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    SInce you got injection not bad to have a reliable distributor :)
     
  17. May 31, 2021
    rejeep

    rejeep Well-Known Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Rochester, NY
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    Well
    Nothing is easy...

    dizzy gear off the old distrib has a smaller ID than the Petronix gear.. (old gear won’t fit)

    Im afraid to drill it out and not get a good machined fit
    I don’t want to drill it out and never be able to use again on a different distrib..

    I think I need to walk away for a moment and evaluate...
     
    Twin2 likes this.
  18. May 31, 2021
    Lockman

    Lockman OK.....Now I Get It . 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Silver Hill,...
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    Hi Neighbor,
    Do you use an ALDL reader & a display adapter for your Android ? If so , post some #'s when you can. I am a tuner by necessity, so I want to help. Running Rich & throwing a code typically points to vacuum, exhaust manifold , or TB air leaks...... before the o2 sensor. The ECM is adding fuel to compensate for the additional air & trying to make the air/ fuel ratio within spec. In my experience tuning my 231 Tubo SFI ( which I realize is a different Gorilla ) , Exhaust manifold cracks & leaks are the usual culprit ?
     
    Last edited: Jun 1, 2021
  19. May 31, 2021
    Lockman

    Lockman OK.....Now I Get It . 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Silver Hill,...
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    As far as your distributor gear change ..... Check out daryl's post for a little confidence push :)
    Swapping Distributor Gear When Installing New Hei
     
  20. Jun 1, 2021
    johneyboy03

    johneyboy03 The green beast

    Quebec, Canada
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    Get a bronze gear. Get it machined to fit the distributor.
     
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