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Jun 14th, 2026
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Joined: Sep 2013
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L - Learner Plates On
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OP
L - Learner Plates On
Joined: Sep 2013
Posts: 158 |
Folks,
Could someone remind me how to calibrate the speedometer on a 4/4 (Sigma engine 2009). According to my 'SpeedoMeter' App on the phone the Morgan speedo is reading 10K per hour (at 100kph) faster than reality. No harm probably (!) but I would like to fix it if possible.
Any thoughts welcome.
Rgds
G
Silver 4/4
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Joined: Mar 2010
Posts: 389
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Learner Plates Off!
Joined: Mar 2010
Posts: 389 |
Press the button of the speedometer and than turn on the ignotion. Now your are in the programming mode. With pressing the button again you can change the numbers. A good description is on Caerbont's website www.caigauge.com.BR Christian
2006 4/4 70th anniversary, 1985 VW 1200 50th anniversary, 1977 Vespa 50 Special, 2003 Vespa PX 200E
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Joined: Aug 2011
Posts: 2,583
Talk Morgan Expert
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Talk Morgan Expert
Joined: Aug 2011
Posts: 2,583 |
Mine is about 3-4 MPH out - shows faster than really going according to Tom Tom & roadside speed monitors - but I like to keep it that way as I have so far avoided any speeding fines. Better to read a bit high than risk reading low IMHO
2010 4/4 sigma
2010 4/4 sport - le mans green
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Joined: Sep 2013
Posts: 158
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OP
L - Learner Plates On
Joined: Sep 2013
Posts: 158 |
Many thanks for responses. Regards. G
Silver 4/4
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Joined: Oct 2013
Posts: 430 Likes: 2
Learner Plates Off!
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Joined: Oct 2013
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Mine has been a mess since the beginning: used to increment at speeds of 70-80 mph (would literally go all the way around the meter and stay there until car was restart). Apparently the problem doesn't lie on the speedo itself (smith) but rather on the sensor to the front right wheel.
Some changes have been made but the incrementing now starts after 90mph is reached....
Very disappointing!
vMog is a 2013 +4/ 4 seater, dark red with saddle brown trim, wooden dashboard and console.
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Joined: May 2014
Posts: 5,441 Likes: 131
Black Rat Charter Member
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Black Rat Charter Member
Joined: May 2014
Posts: 5,441 Likes: 131 |
Something really strange has happened to my speedo. It has always under read according to the GPS reading about 3 mph under at most speeds from 30 up but yesterday bringing her home after her factory visit for the wings I noticed that she was reading spot on at all speeds 
Keith
2013 narrow bodied + 4 Ruby.
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Joined: Aug 2013
Posts: 15,794 Likes: 15
Formerly known as Aldermog Member of the Inner Circle
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Formerly known as Aldermog Member of the Inner Circle
Joined: Aug 2013
Posts: 15,794 Likes: 15 |
Something really strange has happened to my speedo. It has always under read according to the GPS reading about 3 mph under at most speeds from 30 up but yesterday bringing her home after her factory visit for the wings I noticed that she was reading spot on at all speeds I suspect the did mre than repair the wings! Aldermog's speedo was always "Spot On" when compared wit the GPS.
Peter,
66, 2016 Porsche Boxster S
No longer driving Tarka, the 2014 Plus 8...
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Joined: May 2014
Posts: 5,441 Likes: 131
Black Rat Charter Member
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Black Rat Charter Member
Joined: May 2014
Posts: 5,441 Likes: 131 |
Something really strange has happened to my speedo. It has always under read according to the GPS reading about 3 mph under at most speeds from 30 up but yesterday bringing her home after her factory visit for the wings I noticed that she was reading spot on at all speeds I suspect the did mre than repair the wings! Aldermog's speedo was always "Spot On" when compared wit the GPS. Well they did have the dash out to fit a new heater fan control switch.
Keith
2013 narrow bodied + 4 Ruby.
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Joined: Oct 2013
Posts: 430 Likes: 2
Learner Plates Off!
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Learner Plates Off!
Joined: Oct 2013
Posts: 430 Likes: 2 |
Mine has been a mess since the beginning: used to increment at speeds of 70-80 mph (would literally go all the way around the meter and stay there until car was restart). Apparently the problem doesn't lie on the speedo itself (smith) but rather on the sensor to the front right wheel.
Some changes have been made but the incrementing now starts after 90mph is reached....
Very disappointing! Just wanted to thank the team at MMC for fixing my recurring speedo issue: I've been driving vMog for 2 months now and the incrementing default I had seems to have disappeared for good!  
vMog is a 2013 +4/ 4 seater, dark red with saddle brown trim, wooden dashboard and console.
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