On my 94 SSEi I was having the following problem:
During acceleration the speedo would drop and the trans would hunt for a gear. This happened betwen 1st and 2nd gear and was intermittant. After a few miles trans would go into "limp mode" where I would only have 2nd and 3rd gear.
So... I r eplaced the VSS (2 new ones and tried reinstalling the old one) and now I have no speedo at all and only 1st gear.
Scan tool shows no codes.
Don't know where to go from here...