Ive got a 93 hatch with a b18b1 swap that wont hold an idle when cold, i have to step on the gas when cranking to start it up and keep revving until it becomes warm and still idles very low when warm, any ideas why? maybe bad iacv? i dont have a fitv since its obd2. also its running super rich.

 

just did a b18b1 swap a few weeks ago in my buddies 99 coupe. had hard idle when cold and would shut off if we didnt keep on the throttle. then we swapped out the iacv and it idles smooth as can be even from a cold start. oh and we swapped the fuel filter for a new one, but im 90 percent sure that the iacv was the problem

 

sweet man thats what i was thinking ill swap it out for a new one and see, thanks

 

no problem, hope that works out for you brother

 

replaced iacv with a working iacv and still didnt fix the problem, gotta hold the gas until it gets semi warm to keep running, bump anyone?

 

did you check your spark plugs ? if its fould out i just had that problem about a week or two ago and i already forgot what i did to make it stop but yeah i know my dizzy is advance all the way and i open the choke screw as much as i could but yeah my car idles smooth too

 

Perform an idle adjustment. Running super rich sounds like it's not getting enough air (idle screw [throttle bypass screw] is improperly adjusted). Warm the engine up until the cooling fans come on. Turn off all lights, accessories, radio, heater/air, etc and keep them off. Turn the car off. Turn the idle adjustment screw in until it stops, then back it out 2.5 turns. Unplug the IAC. Start the car. Have a buddy keep the RPMs at 1000 as steady as possible then adjust the idle until it will idle at 450-500 without the pedal having to be pressed. Turn it off. Plug in the IAC. Clear the DTC (remove the back-up fuse for 10 seconds). Start the car & check your idle. Should be around 750-800 at that point.

 

my car is running rich too but idles fine it just bogs out when i floor it would that solve my problem ? cause b4 i had a type throttle body and it was fine but when i switch it thats when the problems started coming

 

type i meant type r

 

You might want to start by adjusting you ignition timing back to spec, then set the idle, (recheck the ignition timing if you had to adjust the idle) then check to see how it's reacting. Do you have any kind of fuel controller installed, or increased fuel pressure? If so, turn it off or adjust back to spec before adjusting the ignition timing & idle. If you're still having a bog but not misfiring, then you may need to dig deeper.

 

sorry but by ignition timing do you mean the dizzy? and everything is stock with no mods and all no fuel controller or anything im thinking it could be a bad distributor

 

talk about thread jack, but anyway i already did an idle adjustment on the car, it idles perfectly fine when warmed up but it cant hold an idle while cold. bump

 

try cleaning and tightening the FITV (fast idle thermo valve). its located on the throttle body and controls the idle until the motor is warm. if your car idles fine once warmed up, im about 90% that's your problem.

http://www.team-integra.net/forum/di...g+Common+Topic

*edit: didnt read the part about your car not having one, didnt know that about obd2 cars, so im stumped*

 

Did you ever figure this out? i am having the exact same issue on my b18b obd2