Mitsubishi Repair: it wont stop stalling, throttle position sensor, light flickers

Question
I have a 1994 mitsu diamante and when I start my car up my car runs fine but
when I put it in either drive or reverse and I let the rpm's go down past the
500 reps mark it stalls sometimes it wont do it soemtimes it will but I cant
figure out how to fix it the oil light flickers when its about to stall if I let the
needle reach 1,000 reps mark the oil light flickers but when it goes past the
1,000 reps mark it stay on completely my mechanic messed with my idle or
something he said he adjusted something under the hood it stopped for a
while now its back help please

Answer
Brandon: Sounds like a problem with a weak sensor and the computer. You need to get your mechanic to code the car as to rule out any problems with the computer or the sensors. Your car is about the right year for those sensors to start getting weak. When the computer reads those sensors that then sets things. So if the sensor is getting weak, it would not be reading things right so your car would be not running so good. I would be looking at the Throttle Position Sensor. If after coding the car and nothing show up there. I would be checking for a vacuum leak they will often cause this problem. And one more thing when is the last time you did a good tune up on the car? Stark plugs, wires, distributor cap and rotor? Air filter might be something to look into too. I hope this helps and good luck! ~Linda~