Hello all,

I have a 2001 durango 4.7 , I just had everything serviced at AAMCO and they said my transmission was good and founf no metal filings or such in the fluid. I did have a everything (maintance done) chamge in transamission fluid, oil change... Well no my check engine light came on with a code of P0121 so I had the TPS replaced but didn't help the car problems, a bucking sensation when driving... So just for the hell of it I hit the OD button to off and the car ran absolutley smooth, I mean like I first got it. It also ran better when I turn the air condition up all the way...

No I know, i guess it is not normal to drive with od button off any kind of solutions or advice on what to do next.

Thanks..