Hiya subaru-vanagon heads, I'm driving *Modesto* around Montreal these days, and the temperatures are getting lower and lower. In past cold weather, I've had this recurring problem of the idle sticking at 2000 rpm. Again, *Modesto* is a 1982 Westy (air-cooled) converted to 1995 EJ22. Kennedy conversion. Hard worker and incredibly reliable. The cold weather really bums him out. This idle racing is incredibly annoying tho. Difficult and perilous to change gears (esp. reverse at that high idle) And I get a pretty regular check engine light in this circumstance, at which time the idle DROPS almost to a stall, and sounds CHOPPY. Loss of power. Then that light will go out, and power returns, but the idle stays high. I have tried to pull a code by grounding the green test lead off the ECU (and we did get it to start slowly flashing) but it never communicated a code that we could interpret. I am thinking IACV... maybe some gack built up in it. The Check Engine Light/low choppy idle phase is reminiscent of an open vacuum line - the way that sounds and feels. But it's intermittent. Would a stuck IACV eventually cause such lean running that the ECU tries to compensate..? Any input or experience seriously appreciated. Modesto is going in to our favorite shop this Fall, to have spare tire tray restored, and some other stuff like a leaking heater hose at the front core when climbing serious mountains. I'd love to figure out this cold running difficulty. best vinnie |
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