Two problems related to automatic transmission have been reported for the 1997 Nissan Altima. The most recently reported issues are listed below.
Car bucks at all speeds, all gears, all weather conditions. Has been examined by lang's auto (r5674) and bob sharp Nissan in wilton, CT. Neither could idenitify problem on computer output, but multiple mechanics could feel bucking. Bucking is significant and jars persons in the car. Nissan dealer had the car for three weeks and finally gave it back reporting they could not idenitify problem or fix it. Suggested premium gas and dry gas which we have done and it has not helped. This has been a problem for the last several months. We have two small children and can not take them in that car as they would be jarred. We have no additional recourse with dealer as original dealer went out of business and the one we went to can not fix and will not continue to try. Car is driven approximately 80/ weekday for commuting purposes and on weekends. The bucking does not seem tied to any other event (gears, speeds, etc. ).
When traveling at 40 or more vehicle would downshift unexpectedly. Vehicle been in dealer shop on four occasions, and problem still reoccurring. Please feel free to provide any further details on this matter.