98 lincoln continental reads p0171&p014

the lincoln reads codes p017&p014,but avey one keep taleing me my transmisson is bad.. I had the fluid changed today.. like i said it starts up good egine sounds good, shiffs good all gears even drives in 1&2 good.. then when you goo to put it in drive or revars it jarks,the wheels feel like they"ll lock up on you for a moment...an when you hit the gas it feels like it wont wont to move like its not geting power or no gas.. pleas help me i do not wont to spen money on stuff i dont need done to it.. an the old transmisson fluid was dark an i know thats not good.. thank for your help...