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New Edge Cobras
engine shaking above idle rpm
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<blockquote data-quote="a-man" data-source="post: 16190950" data-attributes="member: 93185"><p>Hi@all,</p><p></p><p>I go crazy with my 1999 Mustang cobra, it has no mods, all factory .</p><p>At idle rpm it runs smooth, if I raise the rpm the engine begins to shake or vibrate, at 1.200 to 1.400 it is worst. If I raise to 2.000 or 4.000 it will be better, but I feel the vibrations . All with the car in park, clutch pressed or not.</p><p></p><p>I installed new plugs, new ignition coils, cleaned MAF, checked EGR . </p><p>Then I noticed that the vibrations at 1.200 to 1.400 are when I raise the rpm AND when I raise to 2.000 rpm and then take the foot from the acceleration and the rpm fall to the 1.400 to 1.200 the vibrations are still the same, so I think it is a mechanic problem ??? because at falling there is no power required???</p><p></p><p>I also installed a new flywheel with clutch. </p><p> </p><p>Now I am at the end, I would swap the harmonic damper or the engine mounts, but not sure... don´t think that it is a fuel/air or ignition problem, because I raised the rpm to 2.500 and then turn off the engine , the shaking comes up again when falling down the rpm. </p><p></p><p></p><p>I hope anybody can help....</p><p></p><p>thanks and all the best from europe</p><p></p><p>Kay</p></blockquote><p></p>
[QUOTE="a-man, post: 16190950, member: 93185"] Hi@all, I go crazy with my 1999 Mustang cobra, it has no mods, all factory . At idle rpm it runs smooth, if I raise the rpm the engine begins to shake or vibrate, at 1.200 to 1.400 it is worst. If I raise to 2.000 or 4.000 it will be better, but I feel the vibrations . All with the car in park, clutch pressed or not. I installed new plugs, new ignition coils, cleaned MAF, checked EGR . Then I noticed that the vibrations at 1.200 to 1.400 are when I raise the rpm AND when I raise to 2.000 rpm and then take the foot from the acceleration and the rpm fall to the 1.400 to 1.200 the vibrations are still the same, so I think it is a mechanic problem ??? because at falling there is no power required??? I also installed a new flywheel with clutch. Now I am at the end, I would swap the harmonic damper or the engine mounts, but not sure... don´t think that it is a fuel/air or ignition problem, because I raised the rpm to 2.500 and then turn off the engine , the shaking comes up again when falling down the rpm. I hope anybody can help.... thanks and all the best from europe Kay [/QUOTE]
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engine shaking above idle rpm
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