wut up everyone, i have 2 problems with my b16 right now first of all it keeps revin up and down all the time. Some one told me that could be idle air control valve???? Another thing is it just started makin a rattlin or tapping noise. someone told me that could be the valve springs???? i really need some help thank you.

 

Iacv is located on the back of the intake manifold - it has 2 coolant lines connected to it, and an electrical connector. Remove it from the manifold and clean it w/ carb cleaner. That should help the idle

If youre not sure what the tapping is (and it could be valves) you should not attempt to fix this yourself - you can really screw it up worse, if you dont know what youre doing.

 

i tried cleanin the idle air control valve but i couldnt open it it had a star and all i had was regular screw driver

 

When did you install the motor, usually if it was recent, it'd take about a week or two for that erradic revving to go away, it's normal. Also happens when I reset my ECU.

 

ive had my motor for 6 months

 

I have the same motor and the same problem. I didnt know you can clean that, I'm going to try it becuz my car idles high in neutral when the car is moving but it comes down when I come to a complete stop.

 

It could be the IACV, the thermo valve, or air in the coolant system. If you have eliminated those, you may want to start troubleshooting the electrical (broken/shorting wires). Also, check the vacuum lines.

My car had a lumpy idle and stalled when coming to a stop. Then the speedo would intermittently stop working. I checked all of the above, then replaced the engine wire harness. Expensive? Yes. However, I was never happy with the way the wiring ended up after my B18C swap so I finally had a good excuse to put in a new engine wire harness. Now she purs like a kitten. No stalls, no spaztic gauges, no loping idle. Wish I had done it sooner.

 

i remember when i first got my motor the reving would stop when i turned my heat on now it does it all the time except when i have it in gear but if i push the cluth in it will start reving vroom vroom vroom vroom it anoys me sooooo bad

 

torx? no, just remove the 2 10mm bolts that hold the iacv onto the manifold - spray cleaner into the screened area

 

i did that but nothin happened, the one screen was caked with dirt but there was a way to open that peice to get to the inside but i didnt have the right tool it was a star shape or somethin