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Discussion Starter · #1 ·
My car had a whole in intercooler which I fixed but it’s saying bad 02 sensor and it runs fine except it revs up when it idles now and it’s throwing nine codes since I replaced the 02 sensor it says idle air control revolutions to high and po 140 o2 code and then a multiple misfire code then deprecate codes for 1 2 and 4 and it doesn’t have a misfire at least not what I feel it doesn’t hesitate it just when I come to a stop it idles up and down need help need get car inspected bad
 
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