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2001 Civic HX - Intermittent High idle? (Won't enter lean burn)
A wierd problem just cropped up on my Civic yesterday. About 2/3 of the time, it will idle at 1400rpms, the rest of the time it bumps back down to it's normal 600rpms.
I recently got a "Pending trouble code" on my Ultragauge (awesome feature, BTW) of P1456 which translates to an Evap system leak, tank side. This is typically a gas cap issue, so I removed the gas cap and put it back on and haven't seen the code since.
Since this started, I haven't been able to get it to enter Lean Burn.
Also, I recently removed my power steering belt, though I don't see how that would be relevant.
Any thoughts on tracking it down?
My first thought is a vacuum leak, but being intermittent puzzles me. Evap system could cause it to be intermittent, but why am I not seeing the code come back?
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