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Old 06-16-2015, 09:02 PM #1
LarsB LarsB is offline
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LarsB LarsB is offline
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LarsB is on a distinguished road
Retarded timing when A/C on
So, I have had idle speed issues lately on my '90 4runner V6. Low idle but usually when I turn on the A/C the rpms increase like they are supposed to even when the idle is around 500. About a week ago it started running rough. I changed the plugs and checked the timing (good @ -10°). After poking around I notice the rough idle is associated with the A/C and when I turn the A/C on the timing retards 5° to -15°. Does anyone know what would cause this? Thanks.
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