My 95 is acting the exact same way. Extremely touchy throttle, can't coast or maintain hwy speed: either fueling hard with minimal throttle or no throttle quickly hold back;decel. Mine is a 5 spd so it is amplified 10x over due to no stall. Cruise has same prob; jerk, jerk, jerk on flat ground...
Hey neighbor, I agree with mounting the pmd/fsd outside the hood also. The front bumper seems to be the prime location, bottom lip behind plate holder. Gets plenty of fresh air and also protected somewhat from road grime. Mine has been there for months, No prob