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Engine stopping intermittently #606399
05/12/19 01:24 AM
05/12/19 01:24 AM
Joined: Nov 2015
Posts: 15
Sydney Australia
walt207 Offline OP
New to Talk Morgan
walt207  Offline OP
New to Talk Morgan

Joined: Nov 2015
Posts: 15
Sydney Australia
My 3 Wheeler engine has recently started to cut out unpredictably at most speeds, either with power on or overdrive. it does not do this when idling. Just an instant cut out, no sign of rough running or back firing. This seems to happen every 30-40 km. No dash warning lights observed. The total mileage is 6,000 km.
It won't restart on the starter if I leave the ignition on. However it restarts instantly if I turn the the ignition key off & on. With experience I have found that at motorway speeds I can restart instantly by leaving the car in gear & the clutch engaged & quickly turning the ignition key off & on. The immobiliser hasn't engaged with these adventures.
I have been back to the Sydney service agent who have checked the car & are nonplussed. Have checked all the obvious things like wiring connections & fuses.

It is always an adventure driving my 3 Wheeler but the sudden loss of power can be rather stressful for a 91 year old.

Hoping someone can suggest a solution.

Happy motoring,
Ken.

Re: Engine stopping intermittently [Re: walt207] #606400
05/12/19 02:25 AM
05/12/19 02:25 AM
Joined: Nov 2012
Posts: 119
West Texas/Southern NM
P
Piloto Offline
L - Learner Plates On
Piloto  Offline
L - Learner Plates On
P

Joined: Nov 2012
Posts: 119
West Texas/Southern NM
Ken: When I grow up I want to be be like you.. Sorry that i can't help with the engine thing, but it sounds electrical.

Re: Engine stopping intermittently [Re: walt207] #606412
05/12/19 08:28 AM
05/12/19 08:28 AM
Joined: Aug 2013
Posts: 1,379
Cheshire, UK
nippymog Offline
Has a lot to Say!
nippymog  Offline
Has a lot to Say!

Joined: Aug 2013
Posts: 1,379
Cheshire, UK
Did your service agent check for ECU fault codes?
You say the immobilizer hasn't engaged - how are you arriving at that?

Re: Engine stopping intermittently [Re: walt207] #606413
05/12/19 08:54 AM
05/12/19 08:54 AM
Joined: Feb 2016
Posts: 2,823
East Harling, Norfolk UK
Richard Wood Offline
Talk Morgan Expert
Richard Wood  Offline
Talk Morgan Expert

Joined: Feb 2016
Posts: 2,823
East Harling, Norfolk UK
As the immobiliser is an option, the wiring diagram shows a (shorting?) plug C47, to be fitted to the immobiliser connector when not specified. Assuming your dealer is aware of this and has the correct plug, it would be a simple task to electrically remove the immobiliser and so identify if its the cause of the issue.


Richard

2018 Roadster - Red/Magnolia - "Morton"
1966 Land Rover series 2a SWB
1960 Velocette Venom
Re: Engine stopping intermittently [Re: walt207] #606423
05/12/19 09:59 AM
05/12/19 09:59 AM
Joined: Jul 2013
Posts: 3,033
West Sussex, UK
Chris99 Offline
Talk Morgan Addict
Chris99  Offline
Talk Morgan Addict

Joined: Jul 2013
Posts: 3,033
West Sussex, UK
Possibly one of the 4 relays by the fusebox. Try swapping them around and see if that helps.

PaulR had a similar problem.


Red Leader drive
Re: Engine stopping intermittently [Re: Chris99] #606439
05/12/19 11:09 AM
05/12/19 11:09 AM
Joined: Oct 2016
Posts: 108
Nr Haverhill UK
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PaulR Offline
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PaulR  Offline
L - Learner Plates On
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Joined: Oct 2016
Posts: 108
Nr Haverhill UK
Yes mine behaved in exactly the same way, no immobiliser on mine
KH traced it to the engine start and ignition relay, worn contacts, so that was replaced and is ok now.
Relay details are on the M3W alternative parts list


PaulR

2016 M3W
Bleazey compensator
Re: Engine stopping intermittently [Re: walt207] #606445
05/12/19 12:32 PM
05/12/19 12:32 PM
Joined: Jul 2019
Posts: 1,155
L
Luddite Offline
Has a lot to Say!
Luddite  Offline
Has a lot to Say!
L

Joined: Jul 2019
Posts: 1,155
Sorry I have ZERO M3W experience and have no definite answer to your issue, though it would seem to me that your process of overcoming the fault may be similar to re-booting a PC, though in this case you are performing a similar action on the ECU...?

Given the many variables in such situations in a digital Morgan, without access to the logic of the operation as written into the ECU chances are that anyone might come up with a considerable number of theories relative to your issues...? Were my Morgan digital, I would consider having access to fault code readout the most important item to have beyond the ign key, and as such it should ideally be available on my mobile phone...?

Your process of re-booting the ECU on the move causes concerns assuming there is a steering lock built into the ignition lock..? Be safe.. and I hope you resolve your issue soonest..


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