I have a 1993 cx hatch with a d15B vtec swap and a p28 ecu, the engine light is on and when i start the car it revs to 3000 and then starts reving from 1000-2500 until the car gets warmed up then it drives fine, a friend said it may be the idle air control valve, any help would be appreciated because this **** is annoying, thanks

 

check the code that your ECU is throwing and fix it first - that might rule out a lot of "speculation". a bad o2 sensor will lead to quirky idling as well as many many other things.

 

https://honda-tech.com/zerosearch try this next time...but what code are you throwing... that could help.....it could be a lot of things iacv,vac leaks,idle srew..etc ...we need more info

 

it probly is the idle air control valve. how long has it been like that.

 

what do you mean what code am i throwing? im not too sure a while now, probably 5 or 6 months?

 

yea.. i know what you mean.. my brothers 91 hatch was doing that for a while & it was annoying.. i just dont know what exactly it was or how he fixed it... *idea* maybe i'll ask him..!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kkitz967 &raquo;</TD></TR><TR><TD CLASS="quote">what do you mean what code am i throwing? im not too sure a while now, probably 5 or 6 months?</TD></TR></TABLE>

Dude f*ing search, this **** has been brought up time and time again. Damn noobs.

 

Yeah, must likely it's the IACV...

 

i dont know i have my finger in my *** thats all ha well ******* fix it this weekend