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

- - - - -

87 GL-10 Idles Fast & Stumbles When Cold

  • Please log in to reply
No replies to this topic

#1 swarren


    New User

  • Members
  • Pip
  • 1 posts
  • NW Washington State

Posted 15 May 2004 - 09:50 AM


I have a 1987 GL-10 sedan- 1800/non-turbo/fuel injection (is this EA81 or EA82? I don't know the terminology). Lately it idles at about 2000 rpm when first started. If I try to drive, it will stumble and stall. If it is allowed to warm up for about 2 minutes before driving (enough to raise the temp gauge a couple of notches), the idle will drop below 1000 and it drives OK.

I thought that the air control valve might be the first thing to check. The valve gets about 12 volts with the ignition on and a cold engine, not running. The valve has a resistance of about 10 ohms and no shorts to the body of the valve.

After the car is warmed up for about 5 minutes, it idles smoothly at about 900 rpm. Pulling the connector from the air control valve reduces the idle to about 600 rpm and rough- so the valve seems to be doing something.

Can I do anything to try to clean or adjust the air control valve? It looks like a candidate for a shot of carb cleaner spray but I don't want to wreck anything. Or should I stay away from it and look for other problems?

Possibly unrelated problems: After driving the car for a few minutes and above about 2500 rpm, the check engine light comes on. It has been doing this for a long time (before the idling problem started) with no effect on performance. I've thought it might be EGR or oxygen sensor related but have never checked it out. I have also had an intermittent overheating problem.


Steve W.

0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users