could be a faulty coil or ECM.. what does the car do at 4000? stall or change how ir runs all together? Any different noises than before?
tomsherri93 answered 6 years ago
If I am correct, this car as well as most have rev limiters to avoid possible damage to the engine. The only way to get the rpms higher than 4000 is by driving the car.
startup and runs perfect until it is reved up to 4000 rpms and it won't go above 4000 above that
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