I have a 99 Honda Civic, automatic transmission.

About two weeks ago, for about 10 seconds it started to smell like burnt plastic and a little smoke started going from under the hood. It stopped and happens once or twice a day since then. When this happens, the temperature is OK according the gauge.

I also noticed 2 things:

  • a few drops of oil I think that the car didn’t have before.
  • the heater is working good, but it seems that some piece of the fan is broken (or melted) because when I push the button to change the air direction of the fan, it changes but return always to the “head” direction.
  • Any noise related to the smoke? Have a professional inspect under the hood, no way we can diagnose this issue.
    – Moab
    Jun 23 '17 at 0:37
  • No noises. except for the smoke and smell, everything has been ok.
    – Felipe B.
    Jun 23 '17 at 3:02

If there is a leak from the head cylinder packing it would drop on to the exhaust manifold. I think there are 2 issues at hand here. As for the fan, it could either be a motor going bad or the fan assembly needs replacement.

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