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Check your Engine balancer shaft (crankshaft hanrmonic balancer) bushes. Balancer is specifically designed to absorb harmonic engine vibrations as engine speeds rise. If the harmonic balancer gets too old or fails and can no longer properly absorb the harmonic vibrations, the engine will shake excessively..


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The engine has no power at idle, it would be same as if you switch in gear and slowly release a clutch. Automatic idle control will try to keep it running, and it will vibrate. Some tiny 1L cars with AC needs to turn the AC off to get up the hill. It's a big load. If your idle revs are going lower with AC ON, then you can consider about checking the idle ...


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Before all the checking balance, check the "other" out of round. My one in a million 1972 gem of a Pontiac (< $1000 TOTAL parts and maintenance spent last 20 years, and paid, any DIY free work neglible). More than 20 years ago, new NTW tires went out of round after a year or 2. As in tire wear made no longer round tires. Several tire shops claimed out of ...


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If they replace the rotors with chinese made rotors, they tend to warp more easily. The steel quality from China is not as good as compared to steel harvested from the US. If you insist on using the subpar quality rotors, when you come to a complete stop after heavy braking, use your e-brake to hold you in place as the clamping force of the pads on the hot ...


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I have a friend with an 02 Accord that has the exact same problem. He's been changing front rotors (and pads) every 12-18 months as far back as I can remember - due to warping. Our take on this issue - brake rotors on this year Accord are too small for the weight of the car. In the late 90's and early 2000's, car manufacturers were all trying to get gas ...


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Since the tire change seems to be the onset of the problem, my first suspicion would be that one or more of the wheels aren't properly balanced. It's possible your mechanic's balancing machine isn't working correctly, or that one of the small weights placed on the wheel has fallen off. You may consider going to another shop and having them verify the ...



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