Last year I had an issue with my cluster, the old style SI board had taken a crap and leaked battery acid all over everything, and the cluster just about ceased to function. I ordered a late model Si board from Jean, put it in, fixed all the broken solder joints on the board and everything worked great.
Recently, the tach has been cutting out from time to time. I pulled the cluster back apart to see if maybe I had broken solder joint on the tach unit itself (I didnt find any but re-flowed all the joints anyway) It still acts up from time to time.
When Im idling, it will drop to 0, slowly climb to 700, then drop again. As I increase the revs it will just plummet to 0 and stay there, and vibrate a bit. It also affects the mpg gauge as well when it does this.
I have a late model 88 325is, and I noticed it has a lead wire coming off the #1 spark plug wire, and it goes to a connector under the diagnostic plug in the engine bay..it is frayed a little from rubbing against the engine, would this be causing the issue at all? Or is this board starting to take a dump too??
Recently, the tach has been cutting out from time to time. I pulled the cluster back apart to see if maybe I had broken solder joint on the tach unit itself (I didnt find any but re-flowed all the joints anyway) It still acts up from time to time.
When Im idling, it will drop to 0, slowly climb to 700, then drop again. As I increase the revs it will just plummet to 0 and stay there, and vibrate a bit. It also affects the mpg gauge as well when it does this.
I have a late model 88 325is, and I noticed it has a lead wire coming off the #1 spark plug wire, and it goes to a connector under the diagnostic plug in the engine bay..it is frayed a little from rubbing against the engine, would this be causing the issue at all? Or is this board starting to take a dump too??
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