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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 by Auz23
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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 !

 

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