Skip the auto shop - Our mechanics make house calls

Q: Vehicle not shifting properly

asked by on

When I am traveling at 55 or above, my vehicle will not downshift when acceleration is required. When I am accelerating from a stop, the car seems to take off normally through first and second gear, but then goes into seventh gear, causing slow acceleration. In addition, when driving within the city, from light to light, the vehicle accelerates and shifts normally.

A: It sounds like the transmission valve body ...

It sounds like the transmission valve body has something sticking in it, not allowing downshifts in higher gears / speeds. I would start with a transmission fluid service to rule out low / poor quality fluid. Then move onto computer diagnostics. Your vehicle is equipped with complex control systems. A trained technician, like one from YourMechanic can read the computers and resolve your shifting problems.

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

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

Q: Engine makes clicking sounds while idling and at lower speeds

Hey there. The first noise you described sounds like valve lifter noise. You will hear this sound if the engine is low on oil. Check the oil level and add if necessary. The lifter noise is not heard at higher...

Q: Transmission issue, car limps and very slow in drive

Hello. If this light is coming on, then the computer is detecting a transmission issue. I always start by checking the fluid. If it is low then this will occur. If the fluid level is fine then the condition needs...

Q: Have e320 2000 Mercedes Benz getting code p1491 and check engine light on.

This code is related to the pressure in the AC system and suggests that it is too high. When this happens it is usually a result of some kind of blockage in the system. There is also a pressure sensor...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...