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AnswerSeveral things can cause this. Take it to a garage. AnswerCHECK YOUR AIR FILTER, ALSO COULD BE A AIR LEAK, ALSO MAKE SURE THE SCREW ON THE THRODLE BODY IS NOT LOOSE...MEANING TO SAY U MIGHT BE LETTING TOO MUCH AIR INTO THE THRODLE BODY, THERE IS A SCREW TO ADJUST IT MAKE SURE ITS NOT OPEN TOO BIG.

my 93 does the same thing. check the coolant level. this is usually the culprit. the only other thing i can think of with this model is the tps. "throttle position sensor" is shorting out. a couple other things these cars are known for are the notorious "main relay" shorts out and the car wont start when its hot. replacing this relay will be an absolute must eventually. and the ignition module inside the distributor assembly. yeah, theyre pricey$$$ but replace with oem or better. buying a cheapy will just leave you stuck somewhere wondering why you replaced it with a piece of crap. but back to the reving.... its probably your coolant level.

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โˆ™ 2009-12-29 15:23:14
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Q: What makes a 1990 Honda Accord EX rev up and down while in park or netural or when coming to a stop?
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