Jump to content
Ultimate Subaru Message Board

Intermittent Low Idle


Recommended Posts

I just installed a new (rebuilt) Hitchi carburetor in my EA81. I set the idle at around 950. Every so often the idle will suddenly dip down to 450 or so, stay there for a few minutes and then come back up to 950. Sometimes it occurs when it has been running 5 minutes, other times after a 1/2 hour on the freeway. Occasionally a hearty rev will bring the idle back up to 950, but usually it will just stay down at 450 no matter what I do until it decides to snap out of it and climb back up to 950.

 

It hasn't stalled out on me yet, but I do need to pass smog next month and would rather have a steady highish idle for that.

 

Any ideas about what may be causing it? I replaced the PCV valve when I replaced the carburetor. Could I have a vacuum leak that opens and closes intermittently? I removed and inspected the EGR valve too when I did the PCV valve. It opened and closed correctly when vacuum was applied to it.

 

If anyone else has had this problem on the EA81 please chime in.

Link to comment
Share on other sites

Please sign in to comment

You will be able to leave a comment after signing in



Sign In Now
 Share

×
×
  • Create New...