Trouble shooting the solenoid

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  • msggunny
    5th Gear
    • Jan 2007
    • 621
    #1

    Trouble shooting the solenoid

    Ok, so i get back after being gone for 7 months on deployment and the SIII wont start.

    My wife mentioned it to me and all i could think of was the solenoid, apparently i was right. i jumped the starter directly from the battery and she turned over.

    Now that i have it 75% diagnosed is there anything else i should look at to make sure it is the solenoid and nothing else?

    Thanks!
    First but gone: 91 3 door Disco "White Rhino"
    77 Series III 88 ex MoD "Shongololo"
    Gone and I miss her: 97 D1 5 speed
    04 DII
    08 D3 (LR3)
    Tags: None
    • greenmeanie
      Overdrive
      • Oct 2006
      • 1358
      #2
      Check the ignition hot feed to the solenoid to rule out ignition switch issues. Just pull the small brown IIRC wire from the solenoid, turn the ignition on and check for power.

        Comment

        • siiirhd88
          3rd Gear
          • Oct 2006
          • 369
          #3
          The solenoid will have several brown wires on the battery post, supplying power to the ignition switch and other loads like the lights. The white with red trace wire on the solenoid is the power coming from the ignition switch in 'start', which energizes the coil in the soleniod to move the slug so the solenoid battery and starter posts connect. Check for power at the white with red trace wire while the ignition switch is held in the 'start' position.

          If the things that only operate when the ignition switch is on are powered (wipers, turn signal, red ignition lamp), then the battery post on the solenoid is likely supplying power to the ignition switch. If not, check the brown wire at the back end of the ignition switch for incoming power.

          If the solenoid is bad, you can replace it with a '60s Ford type solenoid. The Ford type solenoid should have an "S" marked terminal where the white with red trace wire will connect. The "I" marked terminal won't need to be used.

          And Welcome Home! If you are back at Lejune and will be in the area around April 20th, I should be in Morehead City with the wife's 3.9 V8 SIIA 109.

          Bob

            Comment

            • jp-
              5th Gear
              • Oct 2006
              • 981
              #4
              You should be able to just put a jumper wire on the battery side main cable and touch it to the "S" terminal, the starting terminal wire connection. Make sure the vehicle is out of gear of course. If it's any good, it should spin right over.

              Note: Do not connect the small jumper between the two large cables as it will instantaneously melt in your hands...
              61 II 109" Pickup (Restomod, 350 small block, TR4050)
              66 IIA 88" Station Wagon (sold)
              66 IIA 109" Pickup (Restomod, 5MGE, R380)
              67 IIA 109" NADA Wagon (sold)
              88, 2.5TD 110 RHD non-hicap pickup

              -I used to know everything there was to know about Land Rovers; then I joined the RN Bulletin Board.

                Comment

                • msggunny
                  5th Gear
                  • Jan 2007
                  • 621
                  #5
                  Originally posted by jp-
                  You should be able to just put a jumper wire on the battery side main cable and touch it to the "S" terminal, the starting terminal wire connection. Make sure the vehicle is out of gear of course. If it's any good, it should spin right over.

                  Note: Do not connect the small jumper between the two large cables as it will instantaneously melt in your hands...
                  Yup, that did it.

                  Thanks, she gave up the ghost. Getting a new one.

                  Thanks again for the input!
                  First but gone: 91 3 door Disco "White Rhino"
                  77 Series III 88 ex MoD "Shongololo"
                  Gone and I miss her: 97 D1 5 speed
                  04 DII
                  08 D3 (LR3)

                    Comment

                    • msggunny
                      5th Gear
                      • Jan 2007
                      • 621
                      #6
                      Fixed!

                      Again, thanks for the input.
                      First but gone: 91 3 door Disco "White Rhino"
                      77 Series III 88 ex MoD "Shongololo"
                      Gone and I miss her: 97 D1 5 speed
                      04 DII
                      08 D3 (LR3)

                        Comment

                        • navydevildoc
                          1st Gear
                          • Feb 2009
                          • 141
                          #7
                          Glad to see it works... and Welcome Back!!
                          2005 LR3
                          1965 RHD Series IIA currently aka "The hope crusher"

                            Comment

                            • HHI944
                              Low Range
                              • May 2009
                              • 1
                              #8
                              Originally posted by siiirhd88
                              If the solenoid is bad, you can replace it with a '60s Ford type solenoid. The Ford type solenoid should have an "S" marked terminal where the white with red trace wire will connect. The "I" marked terminal won't need to be used.
                              I just took this advice on a 1981 Series III that's new to me. Worked like a charm and cost a lot less than an LR OEM part at $8 at Autozone.

                                Comment

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