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

 

iirc the 92 regals with 3800 engines had no map sensor. and they use two identical coolant temp sensors. one for the pcm, and one for the dash(if equipped). but they are 2 pin sensors, where ur 96 series 2 has a single coolant sensor that is a 3 pin. so unfortunately the parts are not interchangable.


Normally i would advise against part swapping to solve issues, but considering the low cost of the two that threw the codes, I would just replace them both.