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Guest Message by DevFuse

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Vent and A/C controls affect engine idle??

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#1 headhunter


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Posted 16 August 2003 - 03:07 PM

My 91 Legacy is acting up. Hot or cold, when I push the vent button on the air control, the engine idle becomes erratic. If I come to a stop after driving awhile, the engine sometimes idles down and out. When I push the A/C button, no problem. As soon as I turn off the A/C and go back to Vent, the problem reoccurs. I am pretty sure this is a vacuum problem, but the only vacuum lines I'm familiar with are the two on the intake manifold. I have looked at previous posts about an air canister for the air condioner controls, but would like a few more details. I bet my son lunch that I could get an answer from this forum faster than he could from his mechanic (non-Subaru) friends. Any help out there???

#2 e3mt


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Posted 18 August 2003 - 10:18 PM


This is a little self-serving.

My 94 Legacy wagon (AWD, 5 speed) has developed a lurch when the AC is on. It is intermittent. It is pretty extreme and seems to more than just a compressor kicking in though.

thanks - Mark

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