8th Generation Honda Civic Forum - View Single Post - Engine overheats and idles rough when started warm

silver8thcivicr18 · 06-29-2009, 08:27 PM

Over the past week my car has been acting funny,its a 2008 Civic ex. Ill drive it down the road just about a mile or so after i start it and the temp. gauge will be filled to the max but then it will drop a few bars,then gain some back, and repeat.I've drained all the coolant out and replaced it with the genuine honda one that im suppose to use and the temp guage read normal for about a day.I remember filling the reservoir to a little over minimum line.When i checked it today when i noticed the temp guage was full it was up to the cap.Also whenever i start my car after driving it for a few minutes it always idles very rough and sometimes stalls but after i rev it a little it seems to be fine but it has gotten gradually worse and the exaust fumes smell very sweet but there is no white smoke or leaks anywhere.Im thinking it might be the ECT sensors but i want to get some opinions before i spend the money on them becayse theyre fairy expensive.

06-29-2009, 08:27 PM	#1 (permalink)
silver8thcivicr18 Junior Member Join Date: Jun 2009 Location: New York Age: 20 Posts: 10 Jackson	Engine overheats and idles rough when started warm Over the past week my car has been acting funny,its a 2008 Civic ex. Ill drive it down the road just about a mile or so after i start it and the temp. gauge will be filled to the max but then it will drop a few bars,then gain some back, and repeat.I've drained all the coolant out and replaced it with the genuine honda one that im suppose to use and the temp guage read normal for about a day.I remember filling the reservoir to a little over minimum line.When i checked it today when i noticed the temp guage was full it was up to the cap.Also whenever i start my car after driving it for a few minutes it always idles very rough and sometimes stalls but after i rev it a little it seems to be fine but it has gotten gradually worse and the exaust fumes smell very sweet but there is no white smoke or leaks anywhere.Im thinking it might be the ECT sensors but i want to get some opinions before i spend the money on them becayse theyre fairy expensive. Last edited by silver8thcivicr18; 06-29-2009 at 08:30 PM.
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