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Thread: Thoughts

  1. #1

    Default Thoughts

    Since this is the comments section, I'm throwing this out there. I've been battling this intermittent issue since August 2017. I've had the car at a professional shop and while it was there, they put 80 miles on the car they were not able to get it to act up. The owner of the shop witnessed the car acting up as we were unloading the car off the trailer when I dropped it off. Then it decided to never act up again the entire time car was at his shop. I was able to drive the car home from his shop and put roughly 400 miles on it, then it went back to acting retarded again. Misfire, random shaking, then go back to running perfect again, and then back to running poor when I last locked it away for winter storage. It's now almost spring, so I want to try and tackle this again. So what I'm going to do is do a compression test/leak down test/readjust all the valves. Just to rule those items out. NOW IF THAT IS ALL GOOD!!!!!! I'm going to say there has got to be something wrong with my Holley wiring harness somewhere? I do not know what else could possibly be the problem. I'm chasing my tail and I do not know where or who to take this car to, so that I can get this issue resolved. I'm from St. Louis Missouri, and I'm willing to trailer this car four hours in any direction to someone who knows how to diagnosis a gremlin. Everything was BRAND NEW when I bought all the parts. SBF 363, turbo, Coil-On-Plug, Dominator ECU, Digital Dash, I spent tons of hard earned money for the entire build. Now I have a car that I can not drive or rely on. I'm at 3500 street miles on the build. I've put in a new WBO2 senors, new plugs, I've looked everything up & down, left & right. I've had it back to the shop that originally installed everything for me from scratch. I do not know what else to do! Those are my thoughts as of Feb 21 2018. Thanks for reading and thanks for letting me vent.
    Last edited by Joeyman; 02-21-2018 at 01:20 PM.
    89 Mustang GT
    Dart Block 363 with Borg S475 Turbo
    Holley Dominator EFI with 7" Digital Dash

  2. #2
    Join Date
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    Ont. Canada
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    Default

    Do you have any datalogs of it acting up? Do you monitor fuel pressure in your datalogs?

  3. #3
    Join Date
    Dec 2009
    Location
    Connecticut
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    http://forums.holley.com/showthread....2523#post62523 (Holley EFI Tuning Tips & Information)
    May God's grace bless you in the Lord Jesus Christ.

    '78 BRONCO: 508" stroker, TFS heads, 11:1 comp ratio, Dominator MPFI & DIS, cold air induction, Spal dual 12" fans/aluminum radiator, dual 3" exhaust/Magnaflow mufflers, Moroso vacuum pump, Accusump, engine oil & trans fluid coolers, 100HP progressive dry direct-port NOS, A/C, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, traction bars, 4" Skyjacker lift, 35" mud tires

  4. #4

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    Quote Originally Posted by 81 TransAm View Post
    Do you have any datalogs of it acting up? Do you monitor fuel pressure in your datalogs?
    https://www.dropbox.com/s/nwiwvzn5a4...12041.DLZ?dl=0
    https://www.dropbox.com/s/uym7a0y00n...12042.DLZ?dl=0
    https://www.dropbox.com/s/v72jrv7odi...221258.SL?dl=0
    89 Mustang GT
    Dart Block 363 with Borg S475 Turbo
    Holley Dominator EFI with 7" Digital Dash

  5. #5
    Join Date
    Nov 2014
    Location
    Ont. Canada
    Posts
    837

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    Post your Global File. Are you using Digital Falling for your cam sensor? What does your fuel delivery system consist of? I had a real problem with external pumps in my car. When it acts up does it do it at all RPM? Is there a temp it does it at? Are you using a intercooler or water/meth? Your MAT drops pretty good when you open the throttle.
    Last edited by 81 TransAm; 02-24-2018 at 02:53 PM.

  6. #6

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    Quote Originally Posted by 81 TransAm View Post
    Are you using Digital Falling for your cam sensor?
    I'm not sure what this is. I can find out if you give me more info on what to look for.

    What does your fuel delivery system consist of?
    I bought a Glenn's performance 1000 HP '03 Cobra gas tank kit. Supports 1000 HP all in-tank. There are two pumps. I drive on pump 1, 2nd pump turns on at certain RPM & boost.

    When it acts up does it do it at all RPM?
    Yes, it does not matter what RPM.

    Is there a temp it does it at?
    No, it does not matter. Cold or hot engine.

    Are you using a intercooler or water/meth?
    I have an Air-To-Air Intercooler at the front bumper. This is a Fox body Mustang.
    89 Mustang GT
    Dart Block 363 with Borg S475 Turbo
    Holley Dominator EFI with 7" Digital Dash

  7. #7
    Join Date
    Dec 2009
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    Connecticut
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    Quote Originally Posted by 81 TransAm View Post
    Are you using Digital Falling for your cam sensor?
    Quote Originally Posted by Joeyman View Post
    I'm not sure what this is. I can find out if you give me more info on what to look for.
    He's referring to the (Hall-Effect) crank/cam "Sensor Type" in the Custom Ignition Parameters.
    Digital Falling, as opposed to Digital Rising. This is why you should also post your Global File, not just datalogs.

    For further assistance, post your Global File and a short datalog of this occurrence for us to analyze.
    Also, review the datalog and inform us of exactly where in the datalog (time/seconds) the problem occurs.
    Datalog & Global Files must be linked to a document hosting website. I use Dropbox.com.
    Files can also be "zipped" (compressed zipped folder) & attached directly to a forum post.
    Your Global File is in the "Documents", "Holley", "HEFI V4", "Global Files" folder (.hefi file).
    Your Datalogs are in the "Documents", "Holley", "HEFI V4", "Datalogs" folder (.V4.dl file).
    Someone will analyze/troubleshoot the problem & offer advice. Also, ensure all this is right:
    http://forums.holley.com/showthread....ents-Read-This (Initial Checks & Adjustments - Read Steps #1-#6!)
    Quick Datalogger Information:
    Always provide data, not just symptoms. Is the AFR & ignition timing optimized? Overlay the datalog onto your Global File.
    Ensure the Target A/F Ratio table is properly programmed for your engine. Ensure the ECU is "Learning" (Learn Table LINK).
    Scroll through the datalog to the problem area. Then look exactly where this happens on the Base Fuel & Timing Tables. Scrutinize:
    RPM, MAP, MAT, TPS, CTS, IAC, Target AFR, AFR Left, CL Comp, Ignition Timing, Duty Cycle, Fuel Flow, Fuel Pressure & Battery.

    Using the Holley EFI software (LINK), look at where the live cursor moves to during this occurrence, and
    manually tune that area of the Base Fuel Table (enrich or lean) & Base Timing Table (optimize ignition timing).

    I find the most helpful datalog function, is overlaying the datalog on your Global File.
    I'm in the habit of using the datalog Overlay feature every time I review a datalog.
    Click on "Datalog" (on the top Toolbar), "Activate Overlay", then "Open Data Log".
    You can literally "playback" a recorded event, and watch it as it happened on any screen.
    Minimize (shrink) the datalog window, and move it to the bottom of any Global File screen.
    Then click & scroll anywhere on the datalog, and watch it playback on your Global File (EFI software).
    http://documents.holley.com/techlibr...9r10543rev.pdf (Holley EFI Datalogger Instructions)
    https://forums.holley.com/showthread...s-amp-Datalogs (Datalog & System Log Information - Read "NOTES")
    https://www.youtube.com/watch?v=iqHO...C6FEA0BB99AF17 (How To Record & Email A Datalog)
    https://forums.holley.com/showthread...7531#post77531 (Closed Loop Datalog Tuning - Posts #2, #4 & #6)
    May God's grace bless you in the Lord Jesus Christ.

    '78 BRONCO: 508" stroker, TFS heads, 11:1 comp ratio, Dominator MPFI & DIS, cold air induction, Spal dual 12" fans/aluminum radiator, dual 3" exhaust/Magnaflow mufflers, Moroso vacuum pump, Accusump, engine oil & trans fluid coolers, 100HP progressive dry direct-port NOS, A/C, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, traction bars, 4" Skyjacker lift, 35" mud tires

  8. #8

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    Crank Sensor is 36-1, Digital Falling.
    Cam Sensor is Single Pulse, Digital Rising.
    Last edited by Joeyman; 02-26-2018 at 03:47 PM.
    89 Mustang GT
    Dart Block 363 with Borg S475 Turbo
    Holley Dominator EFI with 7" Digital Dash

  9. #9
    Join Date
    Dec 2009
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    Connecticut
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    Quote Originally Posted by Joeyman View Post
    Cam Sensor is Single Pulse, Digital Rising.
    Why are you using Digital Rising for the cam sensor? Digital Falling is much preferred.
    http://forums.holley.com/showthread....m-Sensor-Setup (Crank & Cam Sensor Setup)
    http://forums.holley.com/showthread....ing-Holley-EFI (Ignition Timing Synchronization)
    http://documents.holley.com/techlibr...10555rev17.pdf (Holley EFI Wiring Manual - Figure 11/12, Page 20/21)
    May God's grace bless you in the Lord Jesus Christ.

    '78 BRONCO: 508" stroker, TFS heads, 11:1 comp ratio, Dominator MPFI & DIS, cold air induction, Spal dual 12" fans/aluminum radiator, dual 3" exhaust/Magnaflow mufflers, Moroso vacuum pump, Accusump, engine oil & trans fluid coolers, 100HP progressive dry direct-port NOS, A/C, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, traction bars, 4" Skyjacker lift, 35" mud tires

  10. #10

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    Quote Originally Posted by Danny Cabral View Post
    Why are you using Digital Rising for the cam sensor? Digital Falling is much preferred.
    http://forums.holley.com/showthread....m-Sensor-Setup (Crank & Cam Sensor Setup)
    http://forums.holley.com/showthread....ing-Holley-EFI (Ignition Timing Synchronization)
    http://documents.holley.com/techlibr...10555rev17.pdf (Holley EFI Wiring Manual - Figure 11/12, Page 20/21)
    I did not set it up. Was done by a professional tuning shop. I will read up on it.
    89 Mustang GT
    Dart Block 363 with Borg S475 Turbo
    Holley Dominator EFI with 7" Digital Dash

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