VSS 155 mph Off= N2O, VTS,RVS,BC Duty

sass · Post by **sass** » Tue Jun 16, 2015 7:53 am

Hondata
Have you ever had the problem when speed sensor turns off after car reaches 250km/h? ( 155 mph)

My speed sensor 78410-S5T-901
What could be a solution changing to some alternative more reliable sensor?
Thank

Post by **Hondata** » Tue Jun 16, 2015 9:37 am

The speed sensor will only read to 255 kph (internal limitation of the ECU), but it should not switch back to 0.

sass · Post by **sass** » Tue Jun 16, 2015 11:01 am

I understand.

What might be an idea?

Post by **Hondata** » Tue Jun 16, 2015 2:19 pm

What sort of speed sensor is it? The final drive or 3rd gear?

sass · Post by **sass** » Tue Jun 16, 2015 10:23 pm

My speed sensor 78410-S5T-901

My gear NPR3
1
3.226
2
2.130
3
1.517
4
1.212
5
0.972
6
0.780
final drive
4.105

Speedometer Drive
41312-PE6-310
Honda CTR JDM 4.764

Сar used in races on the mile
https://www.facebook.com/revSpeed.eu

Post by **Hondata** » Wed Jun 17, 2015 6:09 am

The next step is to try another speed sensor.

sass · Post by **sass** » Sun Aug 21, 2016 4:48 am

Hondata wrote:The next step is to try another speed sensor.

Hello hondata,

still have the same problem with speed sensor: i have changed 2 sensors but still do not work propeply.

2015
Speedometer correction 12%
1 race

2 race

2016
http://www.onemile.ee/?lang=en&page=res ... 2016&acm=1
New gear
Speedometer correction 9%
1 race

2 race

https://www.facebook.com/OneMileChallenge/

Post by **Hondata** » Mon Aug 22, 2016 12:59 pm

We've run multiple vehicles over 255 kph and the speed usually pegs at 255 kph. I would consider raising the front off the ground and running it in top gear to see if the problem is load or speed dependent.

sass · Post by **sass** » Tue Aug 23, 2016 1:19 am

I would consider raising the front off the ground and running it in top gear to see if the problem is load or speed dependent.

can you explain?
Thank

Post by **Hondata** » Tue Aug 23, 2016 9:16 am

Pick a place where the neighbors will not complain. If you are 4WD then you'll need to disconnect the rear driveshaft. Jack up the front of the car and support the lower arms so that the axles are straight (to keep the CVs happy). Put in top gear and run then engine to 260 kph. If you're close to redline at that speed then I'd be a little careful as the engine is less happy at high rpm under light load than full load.

sass · Post by **sass** » Tue Aug 23, 2016 12:20 pm

Sorry.
I am not crazy.
I will think about it on the dyno.

sass · Post by **sass** » Thu Sep 01, 2016 12:31 pm

Hondata
I'm sorry for the delay
I have no answers

I know that this is not a problem speed sensor. What frequency (kHz) you are using for the speed readings?

Post by **Spunkster** » Thu Sep 01, 2016 1:01 pm

Post your calibration as well

sass · Post by **sass** » Thu Sep 01, 2016 1:27 pm

ok

The speed sensor will only read to 255 kph (internal limitation of the ECU), but it should not switch back to 0.

it looks weird
https://www.youtube.com/watch?v=bjVjWMT ... e=youtu.be

sass · Post by **sass** » Tue Sep 13, 2016 12:37 am

Hondata
how it's going with that issue

Hondata

VSS 155 mph Off= N2O, VTS,RVS,BC Duty

VSS 155 mph Off= N2O, VTS,RVS,BC Duty

Re: VSS 155 mph Off= N2O, VTS,RVS,BC Duty

Re: VSS 155 mph Off= N2O, VTS,RVS,BC Duty

Re: VSS 155 mph Off= N2O, VTS,RVS,BC Duty

Re: VSS 155 mph Off= N2O, VTS,RVS,BC Duty

Re: VSS 155 mph Off= N2O, VTS,RVS,BC Duty

Re: VSS 155 mph Off= N2O, VTS,RVS,BC Duty

Re: VSS 155 mph Off= N2O, VTS,RVS,BC Duty

Re: VSS 155 mph Off= N2O, VTS,RVS,BC Duty

Re: VSS 155 mph Off= N2O, VTS,RVS,BC Duty

Re: VSS 155 mph Off= N2O, VTS,RVS,BC Duty

Re: VSS 155 mph Off= N2O, VTS,RVS,BC Duty

Re: VSS 155 mph Off= N2O, VTS,RVS,BC Duty

Re: VSS 155 mph Off= N2O, VTS,RVS,BC Duty

Re: VSS 155 mph Off= N2O, VTS,RVS,BC Duty