I don't think your work on the key cylinder was the reason. Have you checked the transmissions fluid level, and do you remember if the filter was replaced yet, or was the transmission ever repaired?
It sounds like you may be losing hydraulic pressure. As your turning or running it the filter may be getting clogged or its level may be low. It may have a leak. This wouls explain the VSS also. The VSS is a speed sensor the speedometer signal uses, in 1990. If you have had no transmission problems until now you have done very well. The early transmissions were a problem. You have many miles. It may need a service but the noise could be a number of things, the torque converter or the pump may be noisey. Sometimes adding fluid may quiet it, but It has very high mileage. A good transmission though. It was first used in late 1988. 04 was the name that Chrysler called it. Check its fluid, or for leaks. OK?
Tuesday, December 15th, 2009 AT 8:53 PM