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

- - - - -

1996 2.2 OBW surges at idle... CEL is off... suggestions?

  • Please log in to reply
1 reply to this topic

#1 Andy FitzGibbon

Andy FitzGibbon

    Eat, Live, Breath Subaru

  • Members
  • 335 posts
  • Elkins, WV

Posted 23 February 2013 - 08:09 PM

Because I have been too busy to do it myself, I just had a bunch of work done on my '96 2.2 (5 speed) OBW:


Timing belt and associated parts (seals, water pump, thermostat, ect.)


New front 02 sensor


New knock sensor


New plugs and wires


New PCV valve



Before the work, the CEL was on and the computer had PO420 (catalyst) and PO325 (knock sensor) codes.  Once the two sensors were replaced, the CEL turned itself off after the usual number of starts.  But, ever since the work, the car has had a surging idle.  It will almost die, then rev up to 1k RPM, then almost die again- in about 1 second cycles.


Any ideas?  Maybe MAF or IAC?  Other than the wonky idle, it runs and drives just fine and gets the usual fuel mileage (about 26 with oversize snow tires).






#2 Fairtax4me



  • Members
  • 13,031 posts
  • Charlottesburg, VA

Posted 23 February 2013 - 08:56 PM

Checked all the vacuum hoses and intake tubing for proper connection?
If that all checks out you might try spraying some throttle body cleaner through the Idle control valve in case it is sticking.

0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users