What causes my car to vibrate?

Tiny
EKEMINIEKPOUDO
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The body of the car vibrates when rpm gets up to 1500-2500 whether the car is in motion or is parked.
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Monday, September 3rd, 2012 AT 11:59 AM
Tiny
KHLOW2008
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Did you checke the spark plug and related components conditions? I believe you have a misfiring causing the condition and at higher rpms, the engine is running with less load so any misfiring would not be easily noticed.
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Monday, September 3rd, 2012 AT 1:48 PM
Tiny
EKEMINIEKPOUDO
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I checked the spark plugs and they are ok. Just FYI the thermostat controlling the fan was removed to avoid overheating. Could it have any other impact on the car?
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Saturday, September 8th, 2012 AT 9:33 AM
Tiny
EKEMINIEKPOUDO
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It is so annoying, the vibration is there all through driving as long as rpm is between 1500-2500. And I mostly drive within that range in the city. Will there ever be a solution? I have tried everything.
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Saturday, September 8th, 2012 AT 9:38 AM
Tiny
KHLOW2008
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Removing the thermostat would not cause this but it would cuse higher fuel consumption and erratic idling at times.

For fuel injected engines, the thermostat is an important part of the system and should never be removed. If there are overheating issues, removing the thermostat is not going to solve the problem, you are only delaying it.

Disconnect the EGR and test if problem goes away.
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Saturday, September 8th, 2012 AT 10:06 AM
Tiny
EKEMINIEKPOUDO
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Is it the EGR valve or the modulator? How do I disconect it? I disconected the modulator and problem was still there.
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Saturday, September 8th, 2012 AT 10:56 AM
Tiny
KHLOW2008
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Disconnect the vacuum to the EGR valve.
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Saturday, September 8th, 2012 AT 11:03 AM
Tiny
DJCL
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Its a black hose that you will remove and plug off
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Sunday, September 9th, 2012 AT 12:13 PM

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