My 96 buick 3.8 lesabre runs rough as soon as it reaches operating temp. If I shut the engine off for a minute and restart it it runs great. I had the codes tested and come up with a code "PO108 map/baro Circuit High Input" and a code "PO117 Engine Coolant Temp circuit Low Input" Can someone tell me which sensor I need to change and where I can find that sensor on my engine. Also I do have a complete 92 model for parts if they will work. Any input will be greatfully appreciated. Thanks , Bruce