Hi All,
First time posting a thread. My 2008 civic will occasionally experience rough idle issues. What typically happens is the car starts fine, will run fine for about 5 or 10 minutes, and then say i come to a stop sign or light...it will then start idling rough to the point of dying So I put it in neutral and give it some gas to keep it alive, and then once I take off, it seems fine. I don't experience any other running issues after that rough idle and it seems like once i get that one rough idle experience out of the way, the car is fine. So not sure if it's something temperature related.. sAnd the idle issue does not happen all the time...it's random and intermittent. Anyway, I've replaced the EGR valve, new injectors, new ignition coils, new fuel pump and finally a new maf sensor. So I think I have all of the major gas, air and spark components replaced. I just change the maf last night and this morning, I took it for a drive, and again about 5 or 10 min after driving, i stopped at a stop sign, and the idle bogged down and almost died. There never a CEL that goes on. The car runs great other than this one issue. I'm at a loss and just curious if anyone else out there may have experienced the same issue
Thanks

 

Clean the throttle body and Idle Air Control.

 

Thanks for the reply...i forgot to mention I cleaned the throttle body last weekend. I'm not sure if the 2008 civic has an IAC valve...can't seem to locate it from a google and youtube search.

 

vacuum leak maybe.

 

Only a guess. .... Check the EGR. Clean it and see if it makes any difference. If not then the valve could be going bad??