i have an 89 crx dx, dualpoint. 93 block, 91si head, and si tranny. sometimes, and only sometimes when i start my car cold the idle would surge and it would die out. i start it back up and it runs fine with no issues. now its just getting worse, i have to start the car and rev it for a few seconds then it will run fine. im thinking it might be the o2 sensor bhut i dont wana replace it and find out its not, any ideas?

 

anyone?

 

Do u have a check engine light on? Do u know how to read trouble codes? Check it out.

 

no cel and im throwing no codes from the ecu, ima certified mechanic just lacking all the diagnostic tools at the moment lol. tomorrow at work im going to clean out my iac valve and see if that helps at all because it only does it when its cold