hi guys,

i did a obd2b to obd1 ecu convertion on a friends car (not with a convertion harness i cut and soldered all the ecu pins,

i tuned the car and it runs gr8 and dosnt have any cel.

but from some reason the A/C dosnt work,

i moved pin a27 from the obd2b harness to the b5 pin on the obd1 harness,

any ideas?

i'v done this cut and solder convertion many times but never had this issue.

thanks

 

What is the OBD1 ECU from?

What is the OBD2b car? 94

 

i dont know where its from. its a p28.


the obd2b car is a 1.4l (D14A4 engine) year 1999