Skip the auto shop - Our mechanics make house calls

Q: 1999 Ford F150 is over reving before it shifts gears

asked by on

My truck keeps over reving before it shifts ive replaced both speed sensors one one the tail of the transmission and the one on the rear differential. Im still having the same problems does the codes need to be cleared or reprogrammed in order for the sensors to work

The function of the vehicle speed sensors on the vehicle are fairly simply and do not always need reprogramming, generally. If the engine has to rev very high before the shift, there many be a fault within the transmission assembly. Check all of the fluid levels and make sure the transmission is full of fluid first. Have an experienced technician drive the vehicle and inspect the drivetrain for problems to further diagnose your shifting issue. Good luck.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.