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+--- Thread: Got a weird one (/thread-4518.html)
Got a weird one - GypsyDogs - 06-02-2023
I have noticed that not only does my speedometer not read accurately (replaced sensor at transmission- no joy)
It also reads differently based on ambient temperature. Colder= less accurate. Warmer= more accurate
Neither is correct.. but when it is hotter outside.. it is closer to my actual speed…. ((Shrug))
Weird- hhuh?
RE: Got a weird one - Texjbird - 06-02-2023
The speedometer on my 1998 Safari usually shows a speed that is 15 mi faster than what we're actually going. I finally adjusted to this discrepancy to my actual speed. It still startles me when I look down and my speedometers clocking us at 100 miles an hour
RE: Got a weird one - rvpopeye - 06-02-2023
Bizarro World ?
TJB
85mph might be a bit extreme in that old Safari ..
RE: Got a weird one - GypsyDogs - 06-02-2023
Mine is a proportional discrepancy..
at lower speeds it reads almost correctly.. but as I go faster, the difference is more noticeable..
Almost like a percentage of error.. and also the percentage is affected by ambient temp
RE: Got a weird one - Wayne49 - 06-02-2023
My 1989 Ford E350 Class C has the proportional increase issue. Temperature would affect mechanical components such as clock springs.
Didn't know about it until California was resurfacing CA-127 South from the Nevada line with a 55 mph limit in the construction zone, usually 65 mph. I was doing 55 mph, according to my speedometer, but the warning sign was flashing my speed as 58 mph, I was the only vehicle on the road at that time.
I turned my phone's GPS on and used a GPS speedometer app to check the differences at 25, 35, and 45, at 25 it was minimal, increasing as the indicated speed went up.
I don't drive over 55 anyway.
RE: Got a weird one - sternwake - 06-02-2023
You dont have any strong magnets in vincinity of speedo do you?
One x country journey west to east, in Louisiana, I-10, maybe I-12, late at night, my speedo needle started bouncing from a steady 65mph, at one point ranging from 45 to 80mph.
I was like "great, my speedo cable is about to snap"
Fiona awoke from her perch on reverse facing seat armrests, and started barking whining, tail wagging, like a person was sitting in my back seat.
15 miles later the speedo needle and Fiona were calm, steady.
3 more cross country trips since, maybe 5, and it has not reoccurred.
No idea other than a bizarre magnetic anomaly.
RE: Got a weird one - GypsyDogs - 06-02-2023
No Stern, no magnets of any significance nearby
My discrepancy is a bit more than that, Wayne
At 60 deg.. (These are all ish) 20=25 30=45 40=60.
At 80 deg .. 20=22 30=35 40=50
I am having to rely on a speedo app
RE: Got a weird one - rvpopeye - 06-03-2023
Does anyone actually obey the speed limits these days ?
No proof available uptah camp.
If you're not passing everything in sight , probably OK.
RE: Got a weird one - GypsyDogs - 06-03-2023
I hate tickets…
RE: Got a weird one - GotSmart - 06-03-2023
I remember disconnecting the cable and cleaning up everything on several different vehicles. Most of the time it repaired the problem. Once I had to change a gear at the transmission.