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Thread: enginge random "cutting"

  1. #1
    artic-trans-am Guest

    Default enginge random "cutting"

    have swaped out the comander 950 computer with a comander 950 PRO computer.

    but now starting to test this, I get some strange failure. I did not see this before....
    when cruise at different rpm's I randomly get a 1 seccond cut on my engine... I have no clue what happends. the same thing happends in my garage when going above idle. (have not registrated this at idle yet)

    What can cause this? I have inspected wiring and can not see any reason why this happens. All connections ar good, and I have good "ground" enginge and car..
    I can do a recording this evening and attach here, if that helps!

    thanks for all help!

  2. #2
    Join Date
    Dec 2009
    Location
    Connecticut
    Posts
    23,478

    Default

    If this just started happening when you replaced the C950 ECU, first ensure the software & firmware are compatible:
    Click on the About & Version tab (with the key-on) to find your current software & firmware versions.
    Your C950 software version must be compatible with your C950 firmware version:
    1.xx software = 1.xx firmware
    2.xx software = 2.xx firmware
    3.xx software = 3.xx firmware

    Scroll down to 'Commander 950' to download the latest software:
    http://www.holley.com/TechService/Library.asp#FuelInjection

    Otherwise, you'll need to data log this occurrence, and see if it reveals the problem.
    If the RPM signal has an intermittent loss or spike, perhaps ignition module needs to be replaced.
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/3000 RPM converter, FPP aluminum driveshaft, FPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & MT 245/45R17 tires.

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