Auz23 Posted November 3, 2019 Share Posted November 3, 2019 (edited) Hey team, I recently changed my oil and redid wiring for my crank angle sensor my car is performing and idling better than it was before, but it periodically has a rougher idle (more vibrations when idling) - usually, it is remedied by flipping the car into neutral and then back into drive which I find really odd. Once in a while, the idle goes a tad lower but usually, it's around the 700-800 rpm mark which is good. any ideas what could be causing this? maybe a dirty IAC? maybe spark plugs/spark plug wires? I'm at a loss!! Thanks in advance! Edit - My car is a 1991 Subaru liberty/legacy with 161'000km on the clock (100'040 miles) Edited November 3, 2019 by Auz23 Link to comment Share on other sites More sharing options...
1 Lucky Texan Posted November 3, 2019 Share Posted November 3, 2019 I dunno, wondering if examining the plugs might give a clue? maybe a cylinder is misfiring and a plug would appear different than the other 3 ? Link to comment Share on other sites More sharing options...
Auz23 Posted November 4, 2019 Author Share Posted November 4, 2019 On 11/4/2019 at 1:55 AM, 1 Lucky Texan said: I dunno, wondering if examining the plugs might give a clue? maybe a cylinder is misfiring and a plug would appear different than the other 3 ? I'll give this a check and let you know ! Link to comment Share on other sites More sharing options...
el_freddo Posted November 5, 2019 Share Posted November 5, 2019 It could be a sticky IACV. Also a good time to check for any stored codes, this might give a clue as to what could be part of the issue. Cheers Bennie 1 Link to comment Share on other sites More sharing options...
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