I swapped a b18b1 in my 91 crx si now when it's cold started it idles around 2k constantly and doesn't change much and kinda sputters when cold but once warmed up it runs good any help would be appreciated thanks

 

Have you cleaned FITV / IACV?

 

^x2

 

No haven't really tinkered with it just need some advice before I tear into it

 

That's where I would start.

 

ive got a b16a2 in a 93 vx hatch and my idles fucked...car idled at around 2k sometimes 2.5k,checked TPS to see it reads the right voltage it did.took off the IACV cleaned it good with carb cleaner when i put it back on idle surged up and down up and down,usually between 1k and 2k,cant figure it out,dizzy doent affect idle at all..retard all the way nothing advance nothing..car is in time,map sensor seems to work when i unplug idle changes,also when i unplug TPS,and IACV idle changes,idle should be controlled by idle screw when the IACV is unplugged im pretty sure but it doesnt affect idle either..ive checked every vacuum line i can come across and ive rest the ecu..good grounds everywhere...wtf???? anyone got any help for me on this???im stresssssssed.

 

You need to clean the FITV as well.

https://honda-tech.com/forums/acura-integra-6/%2A%2A%2A-how-%2A%2A%2A-clean-your-fitv-aka-fast-idle-thermo-valve-1564019/

 

mine doesnt have the fast idle valve its bypassed,just coolent lines i got the problem solved pretty much tho,i went to a local junk yard and got the IACV off a d15,went ahead and grabbed the map sensor and TPS as well just incase,cleaned the new IACV put it on along with the map sensor reset the ecu and started it up,idles at around 1200,still a little high but hell its not bouncing up and down nor is it 2-2.5k so im happy.