Jump to content
Ultimate Subaru Message Board

Recommended Posts

Those are idle stop screws. they are preset from the factory and should not be touched.

 

The idle is controlled by the computer via the idle air control valve. So depending on what problems your seeing, you may want to look at that?

 

So....what problems are you having?

Link to comment
Share on other sites

Correct. Don't touch it, you have absolutely no reason to. Even if your idle is low and you're looking to raise it, the ECU will just recognize that and adjust the IAC valve to compensate.

 

Back when I was stupid and didn't know what I was doing with the car, I tightened that screw down so much I broke the head off of it. The remnant of that screw is sitting in my throttle body right now as we speak, completely misadjusted, which is why my idle is still erratic. That broken screw is near impossible to reach, I'm pondering removing the throttle body entirely and taking it to the dealer to have them flow test it in order to set a new screw in there at factory location.

 

You probably have an IAC problem of some sort.

Link to comment
Share on other sites

after i replaced a injector my idle went below 500 rpm , no stalling just a very low idle.It has new spark plugs, wires..the car has 164,000 miles on it , and other then a very low idle it runs great.....?????? i dont know...any thoughts????

Link to comment
Share on other sites

reset the ECU.

 

If you were driving with a bum injector for a while, the ECU adjusted the duty cylce to compensate for that injector. When you replace it....the ECU has to relearn to compensate back to normal. It's faster simply to reset the ECU....have it go back to stock maps and relearn fully functional sensors/equipment.

Link to comment
Share on other sites

  • 11 months later...
reset the ECU.

 

If you were driving with a bum injector for a while, the ECU adjusted the duty cylce to compensate for that injector. When you replace it....the ECU has to relearn to compensate back to normal. It's faster simply to reset the ECU....have it go back to stock maps and relearn fully functional sensors/equipment.

 

what would be the way to reset the ecu?

the idea on my 94 legacy is erratic and if i come to a stop real quick,it seems to come close to stalling.

Link to comment
Share on other sites

Pull fuse 14 EGI/TCU for an hour. It's easier and doesn't screw with the radio settings.

 

Some say you need to let the car warm up/idle for like 10-15 minutes or until warmed up. However I think you can probably do without. I didn't do it the last time I had my battery out.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...