alight guys, well i have a 89 crx hf with a b16a1 swap and with pr3 ecu and it's been hesitating for a while from like 6k to redline.i saw that my rotor was loose so i tightend that up and it got better and only hesitated from 7k to redline.now i have a really bad problem. i can start the car up and it hesitates for a little bit and then turns off after like 2 min. i have replaced fuel filter,plugs,rotor,and cap. i am still having this problem. i know the problem is either the dizzy,o2 sensors, or some kind of fuel problem. i also i have a chipped pr3 ecu. what do you guys think the problem is i really need to get my car running right i haven't been able to drive it for the last 3 weeks. im tired of bumming rides from people. please help me

 

i have the same sort of problem but only when vtec engages

 

Check all grounds and clean them (not just the ground on the battery but the valve cover groungs, tranny grounds, etc), check engine idle rpm and compare to specs found on service manuals and adjust as needed, check ignition timing and set to stock specs, check cam timing and set to stock specs, check the specs on the igniter in the Distrubitor and compare to service manual specs and replace if neccesary(this part can cause a lot of startup problems if no working properly.