Dollarbill425
01-08-2016, 12:59 PM
1994 325i
Last week my speedometer jumped to 60 then past 160mph while driving home, I knocked on the front cluster and the issue corrected itself until the following morning when it shot past 160 and stayed there until coming to a stop at which point it came back to zero. After taking off again it shot past 160 again but at this point I was on the freeway and the engine began to cutout whenever I went past 60mph (estimated) then power came back when I slowed down, giving me the idea the speed limiter was being activated due to a bad speedometer sensor in the diff. I've replaced it with 3 different sensors now all with the same result and checked for corrosion on the contact pins. Each sensor also was emitting voltage when I turn the wheel, I didn't record the voltage but it did change with speed. I've checked wire continuity to the cluster and its good, and also used the cluster test to verify the needles working as they should (they all go up and down as they should). What am I missing here? No check codes, no abs light. Do the wheel speed sensors even come into play on an e36 model speedometer? I've looked at the wiring schematics and didn't see a link to them but I'm at a loss here. :help
*Odometer is also off and was calculating a 1/4 of a mile as 1 mile or more.
Last week my speedometer jumped to 60 then past 160mph while driving home, I knocked on the front cluster and the issue corrected itself until the following morning when it shot past 160 and stayed there until coming to a stop at which point it came back to zero. After taking off again it shot past 160 again but at this point I was on the freeway and the engine began to cutout whenever I went past 60mph (estimated) then power came back when I slowed down, giving me the idea the speed limiter was being activated due to a bad speedometer sensor in the diff. I've replaced it with 3 different sensors now all with the same result and checked for corrosion on the contact pins. Each sensor also was emitting voltage when I turn the wheel, I didn't record the voltage but it did change with speed. I've checked wire continuity to the cluster and its good, and also used the cluster test to verify the needles working as they should (they all go up and down as they should). What am I missing here? No check codes, no abs light. Do the wheel speed sensors even come into play on an e36 model speedometer? I've looked at the wiring schematics and didn't see a link to them but I'm at a loss here. :help
*Odometer is also off and was calculating a 1/4 of a mile as 1 mile or more.