Why does Acura CL shifts hard when cold. Its a 1999 3.0 Acura CL auto trans. car shift good when motor is hot but shifts hard when cold. Also when coming to a stop when cold it joints forward?

Hard shifting in a cold 1999 Acura CL with a 3.0L engine is often attributed to the Transmission Fluid being thick and not circulating properly until it warms up. Cold temperatures can also affect the transmission's internal components and seals, leading to less efficient operation. The "jolting" forward when coming to a stop may indicate that the transmission is not fully engaging or disengaging, which can be exacerbated by low fluid levels or worn components. It’s advisable to check the transmission fluid level and condition, as well as to consider a transmission service.