What could be wrong with this 88 crx si with b18c gsr swap, when the idle go up and down from 1500rpm to 700 rpm. It never sit still at 750, it constantly moving up and down while sitting still and in neutral while driving. Also, check engine light flashing everytime the car is on it is due to the obd0 to obd1 conversion or it could be some other problem. Please help, I'm thinking about buying this car if it not to big of a hassle trying to fix it. Thank you

 

hey i have the same problem, im trying everything to fix it. i swaped dp-mpfi and its a d16y7 with a HMT setup. neways i got it to start and it surge's from like 2000-3000rpm's i switched out the new tb and new tps and i got a ficv on it now and everything is hoooked up and checked the idel screw, and a new map sensor that is located on the tb now. i start it and it dont idel surge it just stays high rpm like 3 grand. what could be the problem? also i hope some of my ideas i did might fix ur problem. good luck as well as i need it lol