On 06/27/05 I replaced my THROTTLE POSTIION SENSOR ...the part came from the dealer. It was installed and I was told to drive it 10 cycles to clear out the old code that was reading ' SERVICE ENGINE SOON "..... Well, I drove 26.2 mile and the "SERVICE ENGINE LIGHT " is back on !!!!! What can be wrong now??? I need to educate myself it's back @ the auto shop... the diagnostic test code was P0510 or compulter failure... Is there a wrong way to put in a TPS to get the "SERVICE ENGINE SOON" light again .. or what else can be wrong... Did he replaced the wrong thing... I need advice .. Thanks so much