PONTIAC ENGINE IDLE ERRATIC

Hello, I Have A 99 Pontiac Grand Am It Currently Has About 200100 Miles On It, Everytime There's Rain, The Speedometer Gauge Keeps Going...

My Rpms Rise Up And Down While Driving, Is It My Tranmission, Or Do I Just Need Fluid?

My Name It Keith My Dad Is A Mechanic. My Car Is A 1996 Pontiac Fire Bird, Here Lately Is Has Been Making The Rpm's Jump Up And Down And...

My 99 Grand Am, When I Crank It In The Mornings It Runs Fine. If I Go Anywhere And Let It Get Up To Operating Temp And Turn It Off And...