Strange reoccuring tansmission problem
Hello all. I have a 96 Sidekick Sport. I recently transplanted a 1.8l motor out of a 99 Esteem. After figuring out i had 2 ground wires not connected and corrected the issue the car did not give me any trouble for about 2 days. Now what it is doing is at random times the transmission will not shift down into first gear automattically and gives a CEL. I pulled the code from the ECM and it says P0753 (shift solonoid 1-2 electrical). First thing I did was to put a new tranny filter and fluid in. Problem keeps popping up. secondly I checked the wires in the harnesses for breaks. None found. What is strange is I can pull the grfound wire off of the battery to reset ECM and then all will be fine for a couple hours then the problem comes back. Also when the problem exists I find it is possible to shift the transmission manually. When I put it in first it will downshift to first . When I put it in second it will upshift from 1-2. When I go from 2-D it will upshift fine and vise-versa when I downshift manually. Any advise would be greatly appreciated.
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