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When any engine has a rough idle in park or neutral, it usually indicates that the firing order of the sparkplug wires may not be correct. A new engine usually means all new parts. Bring it to a shop and ask them to make sure the firing order is correct.

Make sure they connected all the engine mounts and the transmission mount as well.

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βˆ™ 2010-10-13 08:06:07
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Q: Why do my car shake in park when new engine was installed?
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Related questions

What could cause a car to shake and stop while in park?

You engine is probably misfiring. Check your ignition and fuel systems.


What cause a car to shake?

If your car shakes while underway, your tires have worn incorrectly from misalignment. If it shakes while in park or not moving, your engine is misfiring.


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No, not unless it is so low the engine is overheating.


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Why is my car shaking in park and you just got a fairly new engine installed?

this car is known to have an appearance of a rough idle even when everything is fine and a history of short-lived motor mounts


Could bad spark plugs make a engine shake?

Bad engine cushions can make the engine shake. bad spark plugs cause malfunction as the car starts running.


Why do cars shake when in park or stopped at a traffic light?

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