Re: 56 400 push button problem

Posted by HH56 On 2010/10/15 9:33:40

There is a plug at the end of wire coming from PBs at steering column. Those have been known to cause problems so would check that and make sure all the contacts are well inserted in the housings. The usual poor contact or burned fingers at the sector could also be causing the problems. Possibly heated up with the driving and breaking contact until cooled down again.

No explanation for the starting in reverse but one possibility on the no shift at all is at the automatic park relay---if yours has it and has the revision that eliminated the control relay. When the key is on, the park relay functions as a tie point to provide power to the wires going to pushbuttons. One directly to L,H,D and other via the pressure switch to P,N,R. Those are fed directly from ign switch by yellow or white wire tied at the ballast resistor. A bad or loose connection at one of those places could cause the symptoms.

If you still have the control relay, the same basic path to pushbuttons apply except ign switch closes the relay and an intermittent bad contact in the relay could cause problem.