1998 Hyundai Accent Hi Car Idling Rough Down Slightly More Put Window Indicating

1998 HYUNDAI ACCENT
109,000 MILES
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KATASH
  • MEMBER
  • 3 POSTS
hi my car is idling rough going up and down slightly more when I put my window up or down or indicating and it seems to be using more fuel than it used to used to get 60 miles or so on 10 pound but only getting about 35 to 40 now plugs bin changed coil ok oil ok what could it be thanks
Dec 8, 2012 at 8:57 AM
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KHLOW2008
  • ✓Experienced Mechanic
  • 41,812 POSTS
Is the Malfunction Indiator Light showing?
Was anything done prior to this occurring?
Dec 8, 2012 at 11:52 AM
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KATASH
  • MEMBER
  • 3 POSTS
No lights are showing.
Nothing has been done to the car prior to this. It has just started doing this, just cant understand why I am using so much fuel and why its idling roughly, the revs seem to drop as if going to stall but goes back up again. It is constantly doing this at idle, yet the car drives fine.
Dec 10, 2012 at 9:21 AM
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KHLOW2008
  • ✓Experienced Mechanic
  • 41,812 POSTS
Vehicle needs maintenance and if it is not running well, you need to check. If you are not a mechanic, you definitely would not understand why.

Start with the basics, have atune-up if it is due. Check the spark plugs and related components.
Clean the throttle body and IAC.
Dec 10, 2012 at 12:16 PM
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KATASH
  • MEMBER
  • 3 POSTS
Thanks...will be trying that soon
Dec 10, 2012 at 1:03 PM
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