Why does engine rev at 3000 rpm on start up?

Updated: 4/28/2022
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12y ago

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cause the coolant temp is low , automobiles tend to do that when there cold

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Q: Why does engine rev at 3000 rpm on start up?
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Does the Lincoln LS 2000 have a rev limter?

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In assumption that this question is referring to an automatic transmission a car's engine will not rev over 2800 rpm because when the car automatically shifts as the speed increases that is the usual rpm that the car shifts at. If the car's rpm is getting over 3000 rpm and still not shifting then your transmission is going out and needs to be checked. The autmoatic transmission is what shifts the gears for you. In a manual (shift, clutch) the person needs to shift around 2500 to 3000 rpm. The only reason someone would let the engine rev higher than that for a long period of time while driving manually would be on purpose to burn carbon build up on the pistons.

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