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  • HF Radio stops motor

    Had a strange one today, when tuning the Codan my engine stopped and was hard to restart. Tried to tune a second time and all lights on the dash came on. VSC, Engine, VSC off plus others. Car would not reset with key off. Did a BOBO (battery off, battery on) to reset alarms.
    Has anyone had this type of problem. At the time of this we were just outside the carport (tin roof) so maybe the RF was too much for the ECU to take?

    Pic to show where the autotune ariel is mounted.

    08 VX D4D, Lift, Safari Snorkle, Trailblazer Fridge, Custom Storeage System, BFG, ARB Safari Bar, Wife, Kids, Codan NGT HF Radio, Debt.
    06 100 Series Sahara, Bilteins, Kings, Beaudesert 3", Diff drop, Unichip Q4, Safari Intercooler, EGR delete, 20ft Bushtracker, Codan Envoy more coming.
    Sometimes i wake up Grumpy, most times i leave her sleep.

  • #2
    Re: HF Radio stops motor

    The RF power has a effect. Large high powered commercial type HF radios can affect the ECU on modern vehicles, was reports of engines cutting out or missfiring when the transmit button is pressed, Toyota apparently are particularily prone to this.

    Its not uncommon. Have been mention on I think it was a patrol site of some guys testing a codan through its freq range parked next to a highway and it was causing various cars to stop.

    Check out LCOOL
    http://www.lcool.org/forum/viewtopic.ph ... ght=airbag

    Also a mention here of a conflict with a DP diesel mod chip being interfered with by a codan.
    viewtopic.php?f=12&t=6315

    Wayne

    Comment


    • #3
      Re: HF Radio stops motor

      Thanks Wayne.
      This has only started to cause problem in the last month or so. Radio has been good for the last 6 months (until now) so maybe i have lost an earth someware.
      Will check braid on auto tune and radio earth. Read the posts you attached.

      Rusty.
      08 VX D4D, Lift, Safari Snorkle, Trailblazer Fridge, Custom Storeage System, BFG, ARB Safari Bar, Wife, Kids, Codan NGT HF Radio, Debt.
      06 100 Series Sahara, Bilteins, Kings, Beaudesert 3", Diff drop, Unichip Q4, Safari Intercooler, EGR delete, 20ft Bushtracker, Codan Envoy more coming.
      Sometimes i wake up Grumpy, most times i leave her sleep.

      Comment


      • #4
        Re: HF Radio stops motor

        Rusty
        I run exactly the same set up, even down to the padlock. I've been using mine for over 3 years with no trouble at all. But I went to considerable trouble installing earthing straps, mainly between the body and the chassis. This was in an effort to reduce the injector noise.

        Ron.
        2007 D4D Manual GX, ARB bar, Coopers, Dual Batteries, Codan HF Radio with rear HF Bracket, 2M VHF, 70cms UHF, UHF CB, APRS, Tom Tom GPS, Rally Computer, Waeco Fridge, In-built Water Tank.

        Comment


        • #5
          Re: HF Radio stops motor

          Hi,

          The metal roof could upset the tune on the antenna and could cause all sorts of reflections and parasitic oscillations,
          best not to operate the radio under these conditions.

          If it has only started recently it most likely a fault has developed in the antenna or power supply.

          If your using the cranking battery to power the radio check the battery as the HF rig will draw considerable power.

          Check the earthing carefully as you intend.

          Make sure all antenna connectors are tight.

          Check coax for damage.

          High SWR in the antenna circuit will cause all sorts of problems, is the auto tune working?

          If so it would still pay to get someone to check the SWR if you don't have a SWR meter.

          Also make sure the rear door is effectively earthed.



          Cheers

          LeighW
          HKB Electronics, manufacturer of the Alternator Voltage Booster, Silver 2008 D4D,Lifted,Underbody protection, Alternator Voltage Booster, Tiger Z winch, Lightforce DL, Air Horns, Tanami Drawers, Drop down fridge slide, Outback cargo barriers, Rotronics dual Battery system, Polaris GPS, HF/UHF/VHF, Radio speaker combiner, Long ranger water tank, Diff breathers, Inverter, Snorkel and others

          Comment


          • #6
            Re: HF Radio stops motor

            Seems it was the tin roof of the carport that did it. Tried several times away from home and no problems (so far).
            08 VX D4D, Lift, Safari Snorkle, Trailblazer Fridge, Custom Storeage System, BFG, ARB Safari Bar, Wife, Kids, Codan NGT HF Radio, Debt.
            06 100 Series Sahara, Bilteins, Kings, Beaudesert 3", Diff drop, Unichip Q4, Safari Intercooler, EGR delete, 20ft Bushtracker, Codan Envoy more coming.
            Sometimes i wake up Grumpy, most times i leave her sleep.

            Comment


            • #7
              Have now fitted a new NGT and this is worse. It will send the ECU into limp mode, no power at all. Can reset alarms with scangauge. Will try more earthstraps on doors, bonnet etc and repost.

              Rusty.
              08 VX D4D, Lift, Safari Snorkle, Trailblazer Fridge, Custom Storeage System, BFG, ARB Safari Bar, Wife, Kids, Codan NGT HF Radio, Debt.
              06 100 Series Sahara, Bilteins, Kings, Beaudesert 3", Diff drop, Unichip Q4, Safari Intercooler, EGR delete, 20ft Bushtracker, Codan Envoy more coming.
              Sometimes i wake up Grumpy, most times i leave her sleep.

              Comment


              • #8
                Found the problem. The Tunit unit causes the alarms. When i disconnet the unit all problems dissapear. Have contacted Tunit to see if they have a sheilded cable.
                08 VX D4D, Lift, Safari Snorkle, Trailblazer Fridge, Custom Storeage System, BFG, ARB Safari Bar, Wife, Kids, Codan NGT HF Radio, Debt.
                06 100 Series Sahara, Bilteins, Kings, Beaudesert 3", Diff drop, Unichip Q4, Safari Intercooler, EGR delete, 20ft Bushtracker, Codan Envoy more coming.
                Sometimes i wake up Grumpy, most times i leave her sleep.

                Comment


                • #9
                  Tunit don't have any sheilded cable. Have used copper braid and aluminium tape to sheild cable, RF chokes on both ends, braid earth straps on bonnet and rear door. No longer stalls engine ECU but still has a small effect.
                  At least i can use when moving now.
                  08 VX D4D, Lift, Safari Snorkle, Trailblazer Fridge, Custom Storeage System, BFG, ARB Safari Bar, Wife, Kids, Codan NGT HF Radio, Debt.
                  06 100 Series Sahara, Bilteins, Kings, Beaudesert 3", Diff drop, Unichip Q4, Safari Intercooler, EGR delete, 20ft Bushtracker, Codan Envoy more coming.
                  Sometimes i wake up Grumpy, most times i leave her sleep.

                  Comment


                  • #10
                    Wonder what it does to ones brain
                    2009 120 V6 Auto. 265/70/17 Goodyear Silent Armours. Bilsteins and Kings Springs.

                    Comment


                    • #11
                      duno buit nevrr hurrt me.
                      08 VX D4D, Lift, Safari Snorkle, Trailblazer Fridge, Custom Storeage System, BFG, ARB Safari Bar, Wife, Kids, Codan NGT HF Radio, Debt.
                      06 100 Series Sahara, Bilteins, Kings, Beaudesert 3", Diff drop, Unichip Q4, Safari Intercooler, EGR delete, 20ft Bushtracker, Codan Envoy more coming.
                      Sometimes i wake up Grumpy, most times i leave her sleep.

                      Comment


                      • #12
                        be in tassie november / december this year, keep a look out for us.
                        08 VX D4D, Lift, Safari Snorkle, Trailblazer Fridge, Custom Storeage System, BFG, ARB Safari Bar, Wife, Kids, Codan NGT HF Radio, Debt.
                        06 100 Series Sahara, Bilteins, Kings, Beaudesert 3", Diff drop, Unichip Q4, Safari Intercooler, EGR delete, 20ft Bushtracker, Codan Envoy more coming.
                        Sometimes i wake up Grumpy, most times i leave her sleep.

                        Comment

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