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Questions tagged [wheel-speed-sensor]

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False warnings about tyre pressure loss

I have a Skoda Octavia Mk3 (essentially a VW mechanically) which started to give false warnings about loss of tyre pressure after about 60k miles. It used to work well, and correctly warned me when a ...
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1answer
40 views

What are Wheel ticks and Wheel impulses?

I have some Odometry data taken from a Volkswagen Passat which gives the position. This is calculated using wheel ticks and in addition, I also have data which gives me the number of wheel impulses at ...
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Seeking information on the accuracy of average Fuel Consumption shown in Instrument Console?

If the speed shown in a motorcycle's instrument cluster is off by let's say ~5 km/h relative to the actual speed, can we say that the average fuel consumption it shows is also prone to show wrong ...
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2answers
887 views

Can I access the signal from the wheel speed sensors?

We have a bunch of trucks in the workplace that drive inside the premises. I want to calculate their exact running time. Currently, we can capture engine hour data by tapping the signal of the ...
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3answers
96 views

Are speedometers on race motorcycles accurate in corners?

I'm about to get a set of Race-Sport tires for my motorcycle. The RS tires offer more lean angle. Notice the visual difference, the tire on the left has a much steeper drop off at the sides. When the ...
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1answer
323 views

Backtracing: P0606 (PCM fault) to P0716 (Input Speed Sensor) to Faulty Gearbox

I have a question about a problem encountered on my car (Audi A3 2004, 2.0TDI automatic sportback). I noticed my GSG-DSG 0623 gearbox behaving very oddly, like it does not know when to change gears, ...
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2answers
593 views

Stopping distance of a car

I want to calculate the stopping distance of a car from an OBD2 device. Say, I am driving at 30 kmph and apply my brakes hard. My car will skid and stop at a distance "x" meters from that point. This "...
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1answer
834 views

Mini Cooper S (R53) - ABS sensor and magnetic ring (?) replacement

I have the three lights on my dash on my Mini Cooper (R53) which from research shows a problem related to the ABS sensor. Over the weekend we plugged it into a machine and sure enough it's the ...
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1answer
4k views

Where is the Ford Fiesta 2011 speed sensor located?

I have a Ford Fiesta 2011 and the speed meter was sporadically failing (speed would drop to zero with the car moving and sometimes get back to normal). The yellow warning lamp was lit and I could ...
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2answers
11k views

VSC TRAC, TRAC OFF is on but ABS is not. What does it means?

I just got a 2002 Toyota Sequoia Limited with 167K miles on it. I've got the VSC TRAC and TRAC OFF lights on in the dashboard but not the ABS light. The mechanic that did my pre-purchase check said ...
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2answers
1k views

2001 Toyota 4runner @ 147k miles - Speedometer dead and various dashboard lights on

My 2001 Toyota 4runner has, on random occurrences, has had the traction alarm go off for no reason while driving. Just recently it went off and then Dashboard lights started coming on. I currently ...
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0answers
230 views

VSS accuracy at low speeds

Background I recently got a P1500 code on my 98 Mazda 626 GF. I hooked up my computer using ForScan and cleared the code. It didn't come back after three slow test drives around the parking lot. ...
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2answers
2k views

Why is it difficult to replace a wheel speed sensor?

My local dealership explained to me that my ABS warning light was on because of a broken wheel speed sensor, and that fixing this would cost over $900 because it involved taking the wheel apart and ...
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2answers
16k views

Calculating actual speed of vehicle based on wheel size?

I started wondering today, how does one calculate the moving velocity of a vehicle if they change their tires? I know there are a lot of companies that make the gauges for tuners that change wheels, ...
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2answers
2k views

How does the speedometer on my dash actually work?

So pretty much everyone knows what a speedometer is, the thing on your dash that tells you how fast you are going, whether or not you're speeding, and what speed you have the cruise control set to (...
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2answers
5k views

What are the reasons to mix oil & coolant?

Frontal impact vehicle is there fan motor touches the oil cooler,oil cooler slight impact is there, in coolant tank oil and coolant mixed, what are the reasons to mix the coolant and oil in this ...