Hi, I own a 86 325ix. My speedo doesn't work. I read that maybe the SI board causes the problem so I purchased another cluster from a 90 325ix. Didn't fix the problem. So next I replaced the rear diff sensor. Also didn't fix the problem.
I purchased the car without it working. The first month I had the car it worked 1 time the whole night, but once I shut the ignition off that time, it hasn't worked since. The old cluster had new lithium battery board in it and it held its memory, but the fuel consumption needle only worked for a few minutes after unplugging and replugging the cluster in. The new cluster also is a lith. battery cluster, holds its memory, and was known to be working. With the new cluster the consumption gauge bounces back and forth all the time but I'm guessing cant get a correct reading since it doesn't know how fast its going. Is there something else along the system that might be dead? Does anyone have a electrical diagram of how it runs?
Everything else on the cluster works perfect except the speed. Also I'm not sure if this has something to do with it, but when I do the reset procedure for the board, only the inspection light shut off, but the oil service stays on???
I purchased the car without it working. The first month I had the car it worked 1 time the whole night, but once I shut the ignition off that time, it hasn't worked since. The old cluster had new lithium battery board in it and it held its memory, but the fuel consumption needle only worked for a few minutes after unplugging and replugging the cluster in. The new cluster also is a lith. battery cluster, holds its memory, and was known to be working. With the new cluster the consumption gauge bounces back and forth all the time but I'm guessing cant get a correct reading since it doesn't know how fast its going. Is there something else along the system that might be dead? Does anyone have a electrical diagram of how it runs?
Everything else on the cluster works perfect except the speed. Also I'm not sure if this has something to do with it, but when I do the reset procedure for the board, only the inspection light shut off, but the oil service stays on???
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