Thread: VSS problem
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Old 01-03-2017, 11:34 PM   #13 (permalink)
ECONORAM
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Quote:
Originally Posted by mirkwood View Post
Hi

This is not the first time i try to solve this.. had given up, but now saw the MPGuino in the drawer again..

In my first car, a Alfa romeo 155 it worked flawless. Now in my Alfa romeo 75 I cant get a good VSS signal?.

Up until 20-40km/h MPGuino actually shows the speed, but then goes the oppesit way down to Zero beyond that speed??.
I had this problem with my home built VSS. I have a corroplast disc clamped to my driveshaft, with an LED and an IR photosensor reading light pulses through slots in the disc. However, with 4 slots in the disc my MPGuino would do what you described, starting at 35 mph. I covered 2 slots and it worked until 75mph. I only run one slot now, as some highways have an 85mph speed limit. Just need to get a reliable IR sensor installed...

[edit] nice looking panel enclosure!
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