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Old 01 Sep 2009, 01:46 pm
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Join Date: Mar 2009
Posts: 11
Default What's wrong with my civic?...revving hard on start.?

My friend recently sold me his car, everything was working alrite until last night, when to start the car....it was revving to the top of it's lungs without me even touching the accelerator. There's no RPM guage so I can't see it going up, but it was not sounding normal. Turned off the car and it made a rumbling sound, always makes a rumbling sound on turn off.....no idea what's wrong with it....































Yes it's manual.































94 Civic DX















































hmmmmmm
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Old 01 Sep 2009, 02:16 pm
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Join Date: Aug 2007
Posts: 1,338
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check your floor mats before you do anything. if the floor mat slid forward or if you have non-honda floor mats chances are the accelerator pedal got stuck by the floor mat.































other than that you would want to check the throttle linkage and make sure that the throttle plates in the throttle body are not binding or stuck on carbon.































you may also want to have the motor mounts checked as a broken mount can cause the engine to shift and pull on the accelerator cable.































the rumbling was because of the high engine speed when you shut it off and not indicative of anything else.































hope that helps
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