1995 map sensor location
 

My 850 has developed a stumbling off idle and same when stopping or stopped at red light. Stumbles badly on take off, then once off idle runs fine.
I have been told bad map sensor, now that's the problem; I can not find it. I have been looking for it for a week off and on while I have cleaned and checked other things, even swapped Mass Air flow from known working car with no improvement.
Please does anybody know where it's located?