Q: Car quivering around 30 MPH

asked by on

My car will not go into reverse unless it is on an incline. It also quivers a little when going over 30 MPH.

Hi, a non shifting transmission usually points to internal damage which can be costly to repair. Automatic transmissions have multiple sets of clutches inside that select the gears while driving the vehicle. If the transmission is not well taken care of, over time these clutches wear out and lose their ability to grip. The fluid inside the transmission ages as well and can cause issues with gear selection if not replaced at the correct intervals. Do you notice any abnormal roughness in the shifts as you are driving normally? The car quivering could be related to the transmission issue, but usually has something to do with the wheels. The brake rotors could be warped or the wheels out of balance, both of which would cause a lot of vibration in the steering wheel. Warped rotors would also cause vibrations in the brake pedal, mainly when slowing the car down. Have a certified technician inspect the transmission fluid to help diagnose the issue further. The technician would be able to do a driving test to narrow down what’s causing the quivering.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Car quivering around 30 MPH

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: Antifreeze soaking driver side floor.

Hi there. It is likely that either the evaporator plug is clogged as you've stated, or you might have a heater core coolant leak. If you are experiencing increased engine temperature or overheating at all, it's likely the heater core...

Q: Q: Check Engine light is coming on

It sounds like you are having a severe engine misfire when the engine is "under load" (accelerating). The problem could be in your ignition system (plugs, coils) or in some cases the O2 sensor. I have only seen an O2...

Q: 1998 Volvo S70, 2.3 liter Turbo having vapor lock problems i think when car runs for more than 5 minutes. Engine shuts off. Wo

Hi Marlon. Typically when you have this issue, it's due to a problem with one or a few of the components that comprise the EVAP system. In an effort to reduce harmful emissions coming from unburnt fuel, a series of...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...