Q: shifting problems and the vehicle will not go backwards. Plus it will try to lunge forward in park.

asked by on

my jeep was shifting fine until I put it in 4 wheel drive but now it will not go backwards in reverse my backup lights come on though but it will only go forward it also goes forward in neutral and tries to lunge forward in park when you start it I have replaced the shifting solenoid and it didn't help

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

Hi there. What could be the issue is the main valve to the transmission may have disconnected from the shifter lever on the side of the transmission. Raise up the vehicle and put it on four (4) jack stands. With the brakes pressed down, take the transmission shifter and put it all the way into low. Let off the brakes and see if the wheels turn. If they do, speed up the engine and see if the transmission shifts. If the transmission shifts gear once, then low gear works. If the transmission shifts more than once, then the gear selection is not in low. Stop the tires with the brakes and hold the brake down. Put the transmission shifter in reverse and let off the brake pedal. If the engine loads up but the transmission does not move, then there could be an issue with a cross leak inside the transmission. If the engine does not load up, then the main valve is not aligned up with the reverse application. Press on the brake pedal and slowly move the shifter up and down near the reverse selection. If the engine loads up, hold the shifter where it is and let off the brake. If the tires turn in reverse, then the main valve is out of alignment. If the tires move forward, then there is a cross leak inside the brain of the transmission (valve body). I recommend seeking out a professional, such as one from Your Mechanic, to help you diagnose your transmission issue.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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
  1. Home
  2. Questions
  3. shifting problems and the vehicle will not go backwards. Plus it will try to lunge forward in park.

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: Brake Spongy after Bleeding

There is either air still in the brake lines or potentially a bigger problem at stake like a potential vacuum leak in the brake booster. Before diving into the brake booster, I would suggest having an expert from YourMechanic come...

Q: How does an adaptive transmission work

There is not a fixed end-point insofar as the "learning" or adaptive strategy. The initial "adaptation" occurs within miles but these systems typically rely on "fuzzy" logic so there are continual changes in the operation of the transmission just as...

Q: not shifting at running temp

This can be caused by quite a few different things, from a bad transmission, to a bad speed sensor. Your Durango will need to be connected to a scanner so that all the relevant data can be observed. What is...

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...
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.