I GOT A 89 RS CONVERTIBLE AND THE BATTERY KEPT GOING DEAD SO I RAN A TEST IT CAME BACK UP AS THE MANIFOLD AIR TEMPRATURE SENSOR. HOW MUCH DOES THAT COST AND HOW HARD IS IT TO REPLACE

 

well i dont know how it could make your battery die but i was priced on one few days ago for 20 bucks at a local part store, i think i got my old one for 9 so either i got the wrong on or the prices have doubled,
if you are really talking about the mat sensor it is very easy to replace

 

it said the manifold air temp sensor and thats all that showed up on the circuit test. i think it has a short in it and is drainin power

 

can anyone give any advice