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I suppose there could be a transmission shifting problem. If you can't get to high gear you can't go fast.
Failing that, look for loss of engine output.
Loss of engine output, provided it runs smoothly at lower speeds, has only a few common causes.
1) Design limitation. Is the vehicle designed to go this fast? Some aren't.
2) Fuel limitation. From tank to carb/injectors are you getting enough fuel supply?
3) Air limitation. Do you have a clogged air filter? Damaged turbocharger? Worn cam? IMRC problem on a Ford?
4) Restricted exhaust system. This is usually easy to test for by unbolting the exhaust system immediately after the manifold(s) or header(s). If unbolting the exhaust makes car go fast, you need an exhaust system.
Other possible problems include overloading of vehicle or trailer, brake drag, or underinflated or incorrect size tires.
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∙ 16y ago
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2006 malibu wont go over 40mph?
If your 2006 Malibu will not go over 40 mph it may be stuck in "limp home mode." You will need to have the car checked out by a mechanic.
Can bad rotors cause a car to shake over 40 mph?
It would be highly unlikely.
Why wont my car accelerate past 40 mph?
There may be something wrong with the accelerator. It might be time to get the vehicle checked out to ensure nothing is wrong.
How many feet per second does a car travel when it is moving at 40 mph?
At 40 mph, a car is traveling at about 58.6 feet per second.
What happens to the body during a car accident at 40 mph?
The body wants to continue going 40 mph.
What is this car's reaction distance if a car is traveling at 40 mph?
44feet
At 40 mph how many feet does a car travel in 1 second?
58.6 feet per second at 40 mph
What is it when a car want change gears and want go over 40 mph it's a 2000 Nissian Sentra 4 cylinder?
When a car won't go over 40 MPH and won't change gears right could be the start of many problems. The most common problem would probably be the filters.
How many feet are required to stop a car going 40 mph?
It depends on the car's stopping power. An average distance for 40 mph would be around 85 feet
If a car is traveling 40 mph what distance will it cover in 30 mins?
40 mph = 40 miles in 60 minutes = 20 miles in 30 minutes.
What iis the speed in mph of a car traveling 40 miles for 4 hours?
10 mph
What would cause a squeak when driving over 40 MPH?
If your car has a manual speedo, it can be in it or the cable. Noises have to be heard to be correctly diagnoised.
