milaan Posted July 25, 2011 Report Share Posted July 25, 2011 After getting my entire engine changed the car started idling at 1,800 rpm and it did not accelerate and even the check engine light is on. the mechanic didnt know the reason please advise Link to comment Share on other sites More sharing options...
taakir Posted July 26, 2011 Report Share Posted July 26, 2011 my doubt will be that the ECU may not be compatible. check with the guy who has installed the engine in your car. Link to comment Share on other sites More sharing options...
Ozimandius Posted December 9, 2011 Report Share Posted December 9, 2011 It would help if you could tell us the year/model of your Miata. I had this problem and it was fixed by adjusting the idle valve, which is fairly easy. I get the CEL once in a while though. Link to comment Share on other sites More sharing options...
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