Three problems related to engine knocking noise have been reported for the 2000 Honda Civic. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2000 Honda Civic based on all problems reported for the 2000 Civic.
At 50mph and with no warning transmission will automatically switch to lower gear. Cause unknown. Dealer notified. The transmission would not disengage out of gear when the consumer stops pushing the gas pedal. The engine makes a knocking noise while warming.
Consumer states intermittently while driving on a slight downhhill between 35 to 55 mph and applying very light to moderate braking, the transmission will shift gears from overdrive to third gear. When this happens the tachometer and speedometer will jump up one inch even though vehicle is slowing down. There is a metallic clacking or knocking noise when the engine is warmed up in gear at idle with the brake on.
Intermittently when braking, transmission will shift down on a slight to moderate incline. Dealer has been notified. Half of the time the transmission shifts without warning at up to 55 mph under light to moderate braking. This could cause a serious accident. Consumer also states that there is a metallic clacking or knocking noise when the engine is warmed.