Q: My transmission will not downshift at a stop, upshift from a stop, or go in reverse.

asked by on

The car starts fine, put it into reverse and it slowly moves back until a small jerk and moves back as normal. Then stop, put in drive, car sits at idle and will not move. Push the gas and the transmission stutters then jerks violently into 1st gear. When shifting to second gear, car goes into neutral and the RPMs shoot up, then shifts into 2nd. The car then drives fine. Slowing down to 15 MPH then speeding up with no issues or jerking. Shifts through 2,3,4, and OD with no issues.

Come to a stop sign and complete stop, the car goes will not move until gas is pressed to the floor and car jerks into 1st, then neutral with high RPM, then jerks into 2nd then good until next stop.

I have replaced the solenoids, 1-2 3-4, 2-3, Pressure control, and PMW. The transmission is a 4T65E.

For some reason I did not change the speed sensors. Could this be the issue or something else?

My car has 200000 miles.
My car has an automatic transmission.

Hi there. Most transmissions have shifting issues with the fluid being dirty. First replace the transmission oil filter and do a transmission oil flush. If the fluid is black, do not attempt to change the fluid as it will make the transmission no longer work. Then drive the vehicle and see if the transmission will act up again. If it does, then either the transmission control system (valve body - brain of the transmission) has a mass cross leak or the transmission is slipping and needs rebuilt or replaced. I recommend seeking out a professional, such as one from Your Mechanic, to help you diagnose your transmission.

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. My transmission will not downshift at a stop, upshift from a stop, or go in reverse.

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: While driving, car jumps into lower gears unexpectedly almost coming to a stop. Then the car jumps back into higher gear at random intervals.

Hi there. Sounds like the kick down solenoid is sticking and not functioning correctly. The kick down solenoid make the circuit within the transmission valve body (transmission controller) to down shift when under heavy acceleration to allow a lower gear...

Q: The transmission slips gears and the car has no kick down

If the transmission is slipping, then the vehicle will seem to not accelerate, or the vehicle will not move very fast. It seems that there could be an issue with the transmission that is causing the slippage. Check the kick-down...

Q: My reverse went out and the car won’t go over 20mph. It’s making noises as well.

The first thing to do is verify the fluid condition and if it is full. If the fluid is full then smell the fluid and put some fluid on a white towel to see if it is very dark and...

Related articles

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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.