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Old 23 Nov 2011, 11:02 pm
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Join Date: Sep 2007
Posts: 21
Default 2008 Honda Civic has a rough idle especially when its cold outside?

2008 Honda Civic EX coupe, manual transmission, about 80,000 miles

Recently it has been fairly cold outside and in the morning when I crank my car it idles louder than usual, and the RPMs are around 1300. Normally it idles around 700. It did not do this last year when it was cold, so something is wrong. Even after driving for a while and warming it up, it still runs louder and with weird vibration although the RPMs at idle usually drop.
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Old 23 Nov 2011, 11:16 pm
Join Date: Feb 2009
Posts: 44

it does it because the o2 is compensating for the temperature..

people now a days think their car is a super machine because it was made after 06.. IT'S NOT!!

if you didn't let it warm up before driving it every time since day one, you are paying the consequences now... you have some carbon build up, and sensors are slightly giving out..

you can avoid having to do any major things in the next year, by letting it warm up before you drive it off like most stupid people do.

After it goes down to 700, you are now able to drive it..

lucky for you, your o2 sensor has a heated wire, so you don't have to wait 10 minutes to warm it up, you only have to wait around 3 mins at the most on cold days..
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