At Ecu In A Mt Car

[johnny_boi85]

Hi guys just trying to get my car running right. I have an 1993 R32 GTST manual 2 door and im having alot of trouble getting it to idle steady. I just looked up the codes on the ecu in my 32 which are (C33 RB20DET AT FR 23710-73L70 MEC-R203) which i think is for an auto. So im wondering will this ecu make my car run weird or make no differnce compaired to (R32-GTSt RB20DET Manual FR 23710-04U00 MEC-R106 27C256) which i think is the computer it should have? P.S. sorry about the title didnt really think about what i wrote to much

Edited May 5, 2013 by johnny_boi85

[Tommy Kaira RL]

Does you idle go up and down when you go from any gear to neutral?

I don't think its the ECU. I had an auto ecu in my manual car. It was an IMPUL one. I just had to short the neutral wire to earth so that it wouldn't rev up every time it was in neutral.

[GTSBoy]

Auto ECUs in manual cars are generally fine. The base timing is 20 degrees instead of 15.

Many cars have buggered neutral switches iin the gearbox anyway, so the problem of neutral/in gear idle flare is sometimes caused by that anyway, regardless of the ECU in question.

[johnny_boi85]

sorry for the late reply. i havnt driven the car around since ive had it becuase its unregistered and currently getting rust cut out of it. but from starting it at home it wont idle when its hot or cold and it does rev highthen low then high again. is there a way to check the switch im just trying to rule out possibiltys on by one.