Get this...I replaced my si board and 6 button obc with good used ones (from a 91 318is) on my 90 325i. I fire it up and it idles like cr*p. Surges between 200 and 500 rpms and stalls. When I'm on the throttle it runs fine. It just can't hold a steady idle when cold or warm. So i switched everything back to the broken cluster and broken 6 button obc and it still idles like cr*p. Would switching out those 2 parts kill the idle? Crazy, I didn't even open the hood. Any ideas?
Thanks.
Thanks.
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