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Wales
by Joske Vermeule, September 1
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Forums39
Topics49,868
Posts837,642
Members9,596
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Most Online1,063
Jun 14th, 2026
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Joined: Aug 2016
Posts: 263 Likes: 2
Learner Plates Off!
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OP
Learner Plates Off!
Joined: Aug 2016
Posts: 263 Likes: 2 |
This came on last week and has remained on. Any ideas?
2021 Morgan Plus Four
2012 Morgan Three Wheeler
2020 Land Rover Defender 110
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Joined: Feb 2018
Posts: 807 Likes: 38
Talk Morgan Regular
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Talk Morgan Regular
Joined: Feb 2018
Posts: 807 Likes: 38 |
Yes, check your engine. Seriously, you need to obtain a (free) copy of the S&S Protune software ( https://racing.sscycle.com/support/) which requires a Windows computer and a cable with a Mini B end, and plug it into the ECU to see what the error codes might be. There are many possibilities of error codes. If the engine appears to be running fine, there is a good probability it's related to the automatic fueling adjustment made by the ECU going beyond its design threshold. You can (usually) reset the check engine light by disconnecting the battery for a few minutes, but then you won't know what caused the error in the first place. I would get the software and see for certain what the issue might be.
Last edited by Bitsobrits; 09/05/26 12:23 PM.
Steve
Late 2012 M3W
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Joined: Aug 2016
Posts: 263 Likes: 2
Learner Plates Off!
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OP
Learner Plates Off!
Joined: Aug 2016
Posts: 263 Likes: 2 |
Yes, check your engine. Seriously, you need to obtain a (free) copy of the S&S Protune software ( https://racing.sscycle.com/support/) which requires a Windows computer and a cable with a Mini B end, and plug it into the ECU to see what the error codes might be. There are many possibilities of error codes. If the engine appears to be running fine, there is a good probability it's related to the automatic fueling adjustment made by the ECU going beyond its design threshold. You can (usually) reset the check engine light by disconnecting the battery for a few minutes, but then you won't know what caused the error in the first place. I would get the software and see for certain what the issue might be. Thank you 👍
2021 Morgan Plus Four
2012 Morgan Three Wheeler
2020 Land Rover Defender 110
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Joined: Sep 2021
Posts: 125 Likes: 3
L - Learner Plates On
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L - Learner Plates On
Joined: Sep 2021
Posts: 125 Likes: 3 |
Some years ago when I bought my car and was new to the scene i had my engine light come on. I ran my car on super unleaded ever since and after a couple of tank fulls the light went out and has never come back on. Now its been years without it. Obviously it could be something more serious so you definitiely need to check but when my checks found nothing concerning that is what I did. And as of yesterday I got my car back from service/mot/taxed so back on the road. Therefore apologies to all for the rain we have had since!
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Joined: Nov 2013
Posts: 786 Likes: 18
Talk Morgan Regular
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Talk Morgan Regular
Joined: Nov 2013
Posts: 786 Likes: 18 |
My engine light came on for over a year. Protune indicated a cylinder adaptation fault. I tried everything: intake manifold gasket, MAP sensor, complete throttle body with sensor, and other lambda sensors. Nothing changed. Later, the problem disappeared, and the engine ran perfectly.
My 132cc transsexual engine sometimes has its engine light come on at startup and go off after 30 seconds, or it comes on briefly during hard deceleration on steep descents and goes off as soon as I accelerate again.
So, I'm no longer worried about seeing it on. I haven't checked Protune for a long time when it's running perfectly. I've even tried four different types of injectors, but it didn't make any difference and the engine runs very well.
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