speed sensor setup
Posted: Wed Apr 04, 2018 8:04 pm
I have been trying to get my speed sensor and gear indicatior accurate, but for some reason I can not get both to work.
I currently have the pulses per KM set to 3250 and used a satnav compare speed against and make adjustments untill correct but my gear indicator is out by 1 gear.
The car has 175/50/13 tyres with the below ratios:-
1: 3.500
2: 1.956
3: 1.344
4: 1.071
5: 0.812
FD: 4.562
If I change the pulses per revolution to 2524 as calculated with using a roling diameter of 1578mm and 4 pulses per revolution i get the gear indicator correct but the speedo is way out.
Do you have any ideas why this could be happening?
Thanks in advance
I currently have the pulses per KM set to 3250 and used a satnav compare speed against and make adjustments untill correct but my gear indicator is out by 1 gear.
The car has 175/50/13 tyres with the below ratios:-
1: 3.500
2: 1.956
3: 1.344
4: 1.071
5: 0.812
FD: 4.562
If I change the pulses per revolution to 2524 as calculated with using a roling diameter of 1578mm and 4 pulses per revolution i get the gear indicator correct but the speedo is way out.
Do you have any ideas why this could be happening?
Thanks in advance