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Thread: Dodge Dart 340 won't idle.

  1. #1

    Default Dodge Dart 340 won't idle.

    I've had my Terminator for three years, yesterday it started dying when idling. I noticed my IAC was at zero, so I tried to adjust my throttle blades closed. I reset the TPS and it won't hardly idle at all now. It starts and with in 15 seconds it dies, the IAC tries to control it, but it ends up at zero just before it dies. I did install the latest V5 version a month ago.

    IAC Hold Position 20%
    IAC Ramp Decay 2.0 sec
    IAC Ramp Start 1100 RPM
    IAC Kick 50 %
    IAC Parked 88-26%
    IAC Startup Hold Time 1.0 sec
    IAC Startup Decay Time 1.5 sec
    Idle Spark Enabled
    Idle Speed 941-704 RPM

  2. #2
    Join Date
    Dec 2009


    Record & review a datalog of this occurrence. Is the EFI system Learning? Is the ignition timing synchronized? Is the fuel pressure correct? IAC Position of about 5% at hot idle? Check for ignition misfires/RPM signal problems, exhaust leak upstream of WBO2 sensor, or if the WBO2 sensor (or other sensor) has failed and corrupted the Learn Table. Look at the Data Monitor/Gauges.
    WBO2 sensor testing procedure at end of "Wideband O2 Sensor Notes": (WBO2 Sensor Information)

    Originally Posted by Danny Cabral
    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). (Holley EFI Datalogger Instructions) (Datalog & System Log Information - Read "NOTES") (How To Record & Email A Datalog) (How To Record A System Log & Diagnose A No-Start Condition) (Closed Loop Datalog Tuning - Posts #2, #4 & #6)
    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/2800 RPM converter, M4602G aluminum driveshaft, FRPP 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 & 245/45R17 tires.

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