jdm b16
delsol dohc electronic running gear


I have the typicall honda erratic idle issue i have replaced the TB gasket. idle adjustment screw and IAC valve.... when putting finger over the upper port in the TB there is a strong vaccum. When doing so the idle issues ceases. what can i do next. what kinda voltage should the IAC plug read.... i need alot of help here.... also cleaned all the ports leading to and from the intake and through TB...

Thanks guys

Bryan

 

You need to replace your fast idle valve it is the one behind for IM next to your throttle body.

 

Sorry man I screwed up. If there is vacuum from the top hole its the iac if there is vacuum coming from the bottom its the fast idle. Make sure when you test the bottom that the car is at operating temp. I thought all this time that the iac was the fast idle. I fix A friends car that had erratic idle by changing the iac. Let me know what happened.

 

i replaced the IAC..... and the top port still having a vaccum ????? why is this? anyone?... what kindof voltage reading should i get at the plug?

 

Check the map sensor for leaks or replace the o2 sensor. I knew of somebody that fixed an erractic idle for a B16 del sol by get the ecu reburnt cuz he had a lot of stuff done to his car.

What year is the car?

 

Just thought of someting. There should be like 4 wires connecting to the ignitor in the distributor. Make sure those are tight. If not, then get some dielectric tune up grease and put a little bit on all of the connectors and use some needle nose pliers to squeeze the connectors so they go back onto the ignitor more tightly.

I did this with my car recently and it fixed a lot of problems.