car stall/erratic idle Options

[SleekCelica]

So when I first bought this car, it had a really bad erratic idle, that would drop down to 0 and bounce right back up in a matter of a second, and keep doing this. It would flicker, and then stall. It's not fuel related. It'll actually stall when I'm driving and then not start back up. I replaced the ignition coil and all was fine. Now, three months later, it's doing this again >:( What do you guys think? It's throwing a 12, 13, and 41 codes. Could these all be related to the 41 (TPS?)

[Remy]

So when I first bought this car, it had a really bad erratic idle, that would drop down to 0 and bounce right back up in a matter of a second, and keep doing this. It would flicker, and then stall. It's not fuel related. It'll actually stall when I'm driving and then not start back up. I replaced the ignition coil and all was fine. Now, three months later, it's doing this again >:( What do you guys think? It's throwing a 12, 13, and 41 codes. Could these all be related to the 41 (TPS?)

Does the problem happen at idle or after you've driven it for awhile ??

12 and 13 Code- Distributor or ECU could even be the wires that are bad

41 Code- Faulty TPS Sensor not functioning properly, when you get the idle problem again unplug the connector from the tps sensor and see if that helps, the car will run without it connected too btw but it would throw the check engine light though but if it runs better you know thats your problem.

Dont just start replacing parts thats the worst way to diagnose your car.