Home > Technical > Unusual starter motor fault |
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MK Member Since: 28 Aug 2008 Location: Santiago Posts: 2420 |
In all those years have you changed the starter relay? Puma 110" SW
............................................................. Earth first. Other planets later |
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15th Nov 2022 6:16pm |
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blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17442 |
No, and it wouldn't be my first suspect but no harm in trying next it happens.
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15th Nov 2022 6:48pm |
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Birdy Member Since: 07 Oct 2011 Location: Côte d'Azur Posts: 866 |
Similar(?) problem in that my daughter recently flew over to France to drive a vehicle back to the UK for sale. You’ve guessed it, on the morning she was to leave, the click click click of a flat battery or a loose connection. The battery ISN’T easily got to on this model, it’s underneath the rear seats in front of the rear axle and only accessible from underneath. Push started easily, voltmeter showed charging at 14 odd volts, lights etc. working perfectly. Switch off, try the starter, click, click, click….
To cut a long story short, she drove to Calais, DFDS to Dover, it’s amazing how many guys volunteered to push-start a young girl driving a Morgan whenever she had to stop for petrol or drive off the ship. She stopped off at the Morgan dealer in Kent, a faulty starter motor was diagnosed. They didn’t have one in stock, took one off a show-room vehicle on the understanding that when another one was sourced she’d return so they could swap them back. New starter motor, switch on, click, click click. Starter motors exchanged, new battery fitted. Perfect! They’d checked the battery on the car with a Drop Tester, but somehow it was only failing when the full load of the starter motor was required. Why not try running with another battery before changing relays, starter motor etc? Peter |
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15th Nov 2022 7:06pm |
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blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17442 |
It's certainly easier to change to battery than then starter (especially since I have underchassis protection). Odd though that it's happened for 13 years.
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15th Nov 2022 7:20pm |
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custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20440 |
If you do change battery I highly recommend Yuasa Silver. Very pleased with mine. $W33T $0U7H3RN $UG4R
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15th Nov 2022 7:21pm |
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blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17442 |
I have a Varta LED95 EFB standing by if needed.
On reflection I don't think it can possibly be a relay fault because the starter is engaging and attempting to crank. Not only can your hear it doing this but the voltage drop caused by the stalled motor (no back emf) browns out the other electrical systems. The relay must therefore be energising correctly. |
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15th Nov 2022 8:05pm |
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LandRoverAnorak Member Since: 17 Jul 2011 Location: Surrey Posts: 11324 |
High resistance in the ignition switch, perhaps? It sounds very similar to when my switch failed and there was evidence of excessive heat on one of the contacts:
Click image to enlarge Darren 110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak "You came in that thing? You're braver than I thought!" - Princess Leia |
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15th Nov 2022 9:05pm |
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blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17442 |
Again I could understand a fault with the switch leading to a failure of the starter to engage, but not to a fully-engaged but non-cranking starter.
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15th Nov 2022 9:12pm |
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Retroanaconda Member Since: 04 Jan 2012 Location: Scotland Posts: 2656 |
I had this on a Tdi years ago. I never solved it despite changing the starter and the battery, it was always sporadic. I can only surmise it was a poor connection on the solenoid or something.
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15th Nov 2022 9:26pm |
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LandRoverAnorak Member Since: 17 Jul 2011 Location: Surrey Posts: 11324 |
Honestly, what you're describing sounds exactly like what I experienced. Turn the key and there's a brief lurch as it tries to start and then nothing - all lights out as if a dead short. It got progressively worse over several months until it failed completely.
It seems to me that connecting a second battery might give enough oomph (technical term) to overcome any high resistance and, of course, once it's started the problem goes away. Darren 110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak "You came in that thing? You're braver than I thought!" - Princess Leia |
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15th Nov 2022 9:29pm |
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MR_JAMES Member Since: 10 Oct 2013 Location: ESSEX Posts: 248 |
I've got a lucas m79 from a metro that sounds like its doing the same thing. (The engine is on the floor on a pallet) Jumping the start terminal it is spinning up but the solenoid isn't pushing the drive out far enough to mesh with the flywheel - in my case the lever connecting the two is partly seized. Maybe yours is too. 1953 80"
1987 mini city e 2011 90" |
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15th Nov 2022 9:31pm |
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blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17442 |
^ Presumably in this case you hear the starter spinning, which I don't.
LRA, did a new starter fix your problem? |
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15th Nov 2022 10:51pm |
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Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3421 |
Do the lights on the dash go completely out, or they dim?
If there is such a voltage drop (as you say due to no back emf from the starter not spinning), would that not draw enough power from the solenoid, triggering the click click click sound as the power to the solenoid is restored when the solenoid itself remove the power to the starter? So if the dash lights are going off, perhaps there is a voltage threshold that the lights can operate at (I do not know if the lights in dash are leds or old incandescents. Unless it is designed to cut off power from everything else except the ecu and the starter itself during cranking. Though that I do not know either. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing 2012 90 CSW, 2.2TDCI, Santorini Black |
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15th Nov 2022 11:56pm |
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LandRoverAnorak Member Since: 17 Jul 2011 Location: Surrey Posts: 11324 |
No, it was a new ignition switch. Darren 110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak "You came in that thing? You're braver than I thought!" - Princess Leia |
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16th Nov 2022 6:54am |
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