ok I have a h22a in a 93 del sol it was running fine then the outher day i got to start it and its idle is all ****ed up it goes to 3k hen back down to 1k and it does it no matter what while im drivin i cant find a vacume leak and my check engin light isnt on does any1 have any ideas please help thanks

 

bump

 

ur car is hunting...what ECU are u running?

 

its gotta be a vacuum leak you haven't found , or the iacv

 

prelude ecu

 

p13??? just run a p28 w/ h22 setup n you'll be fine.. p28 is a slutier computer and it'll bypass some sensors.....

 

I am looking for engine serial numbers specifications to figure out what year and model my engine came out of

 

IACV, FITV, vacuum leaks, etc. I ended up just blocking both my IACV and FITV.