2002 Honda Civic Deceleration

2002 HONDA CIVIC
118,000 MILES • 4 CYL • 2WD • AUTOMATIC
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BILLVO
  • MEMBER
  • 2 POSTS
My 2002 civic decelerates on it's own. It will run fine for 30 to 40 minutes and then begin to decelerate on it's own. From 50 to 40 to 30 to 20, etc... until you pull over. Once you pull over, and turn it off, and let it set for 5 or ten minutes it will start back up and run normally for some period of time before the problem repeats. No dash warning lights. Any ideas?
Apr 4, 2010 at 6:29 AM
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F4I_GUY
  • ✓Experienced Mechanic
  • 3,302 POSTS
So if you step on the throttle nothing happens? Or the car decelerates too quickly? If so, check for dragging brakes and make sure the rear brakes are adjusted properly.
Apr 4, 2010 at 7:29 AM
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BILLVO
  • MEMBER
  • 2 POSTS
If you step on the throttle, nothing happens. Decelerates on it's own while my foot is pressing down on the throttle.
Apr 5, 2010 at 1:23 AM
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F4I_GUY
  • ✓Experienced Mechanic
  • 3,302 POSTS
Does the engine RPM revv up when you depress the throttle? If this happens and the speed does not increase you sounds like you may have a slipping transmission.

You may want to have your onboard computers scanned to see if there are any codes stored.
Apr 10, 2010 at 3:37 AM
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