If it's an automatic (ATX) and you're getting that around 4K RPMs, it is normal.
You're hitting the rev limiter and the computer is keeping you from doing something stupid, like blowing up the torque converter.
Steve
98 Contour SE Sport 2.5 Duratec ATX The wifey's car
89 Taurus SHO - 246K miles
94 SHO ATX - 190K
1997 F-150 5.4L ATX - The Workhorse 150K.
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