Jump to content


Welcome to Ultimate Subaru Message Board, my lurker friend!

Welcome to Ultimate Subaru Message Board, an unparalleled Subaru community full of the greatest Subaru gurus and modders on the planet! We offer technical information and discussion about all things Subaru, the best and most popular all wheel drive vehicles ever created.

We offer all this information for free to everyone, even lurkers like you! All we ask in return is that you sign up and give back some of what you get out - without our awesome registered users none of this would be possible! Plus, you get way more great stuff as a member! Lurk to lose, participate to WIN*!
  • Say hello and join the conversation
  • Subscribe to topics and forums to get automatic updates
  • Get your own profile and make new friends
  • Classifieds with all sorts of Subaru goodies
  • Photo hosting in our gallery
  • Meet other cool people with cool cars
Seriously, what are you waiting for? Make your life more fulfilling and join today! You and your Subaru won't regret it, we guarantee** it.

* The joy of participation and being generally awesome constitutes winning
** Not an actual guarantee, but seriously, you probably won't regret it!

Serving the Subaru Community since May 18th, 1998!

Guest Message by DevFuse
 

- - - - -

94 Legacy low idle problem


  • Please log in to reply
3 replies to this topic

#1 Guest_me0508_*

Guest_me0508_*
  • Guests

Posted 19 June 2003 - 10:43 AM

I am having trouble with a very low idle on my 94 Legacy (about 300 rpm). I've reset the ECU and that did not help. In reading previous posts, a good place to start seems to be the IAC valve. Can these successfully be cleaned or do I just need to buy a new one? I'm not 100 percent sure that is the problem so I hate to drop $300+ bucks right now. Thanks.

#2 Guest_Legacy777_*

Guest_Legacy777_*
  • Guests

Posted 19 June 2003 - 11:16 AM

They can be cleaned. Take the IAC valve off the car. Scribe around the mount brackets for the magnetic controller, then remove the controller. Spray brake cleaner in the valve and make sure it turns smoothly and freely. When it's cleaned and good, put magnetic top back on and line it up with the marks.

Put everything back together. If idle is still way too low, you can slightly tweak the magnetic top to give you a slightly better idle.

FYI, the tach on the dash is not really that accurate. It almost always reads low. Use an external tach setup for fine tuning and adjustment.

#3 Guest_Frag_*

Guest_Frag_*
  • Guests

Posted 19 June 2003 - 11:58 AM

Josh, what if one disconnected the air intake hose to the IAC and shot some cleaner in there while the engine was running? Would you see reasons not to do that?
Just an idea.

#4 Guest_Legacy777_*

Guest_Legacy777_*
  • Guests

Posted 19 June 2003 - 01:03 PM

Well......only problem with that is you're getting a lot of un-metered air, and car will not probably run. You could give it a shot.

other thought is to disconnect the MAF sensor, and then do this. The car will run with a default mapping....and it'll run pretty crappy, but I think it'll run better then with the MAF connected and trying to spray stuff in there.




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users