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

asked by on January 12, 2017

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.

Car is not shifting into park Inspection $94.99 - $114.99 Get a Quote

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.

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Which sensors are most important for monitoring and improving the engine’s performance?
The way modern electronic engine control systems are designed, all of the sensors are important but some are more crucial to the vehicle than others. For example, if the engine electronic control unit (ECU) loses the input (https://www.yourmechanic.com/article/how-your-ecu-uses-sensor-data) from the...
p1120 out of service code
Hi. The code P1120 is a problem with the throttle position sensor. The input from the throttle position was not what the computer expected and would cause the computer to go into a failure limp mode. When the computer is...
is it safe to drive my car when the electrical coupling assembly needs replaced
I am not sure too sure if you are talking about the higher voltage battery charge port for the hybrid battery or another component. But if it is I would have to see it to tell you if it was...
Key won't turn after inserting into ignition
Hello. It sounds like the ignition has locked up and this is preventing your key from working properly. This sometimes happens if the components inside the ignition gets worn out and gets stuck, preventing the key from turning the ignition....
Key and ignition switch fall out of steering column
Hey there, thanks for writing in about your Chevrolet Silverado 2500. GM has had major ignition switch issues (https://www.yourmechanic.com/services/ignition-switch-replacement) over the last several years, many of which ended up being recalled (https://www.yourmechanic.com/article/how-to-check-if-your-car-has-recalls). You should probably call GM customer service and...
Loss of power
Hello. From my experience with this truck this is usually caused by a wiring issue on that side of the engine. If the ground loses connection then one side of the engine will begin to misfire (https://www.yourmechanic.com/services/engine-is-misfiring-inspection) and this will...
Brakes frozen, bad wheel bearing?
This may be a stuck brake caliper which may cause a bit of brake drag. Sometimes when this happens, it may be just one caliper on one side which will be noticed by the fact that the truck may pull...
Timing Chain/Phasers Replacement on a 2005 F150 5.4
Hi there. I believe it would be a very good idea to have the guides replaced at the same time; especially if the mechanic completing this work will not charge a lot of additional labor to complete the service. Anytime...

Related articles

The Best Used Cars to Buy If You're a Skier
When When summer ends, skiers start thinking about hitting the hills, and that means having to contend with winter driving conditions. Not just any vehicle is going to get the job done. We have evaluated several used ski-worthy vehicles, and...
How Long Does a Valve Cover Gasket Last?
Among Among the most important parts of any engine is the oil that is contained within it. There are a variety of moving parts that depend on the oil for lubrication. The valve cover goes on top of the engine...
The Meanings of Automatic Gear Shift Letters & Numbers
A break down “PRNDL” and all its varieties, including D1, D2, and D3 modes.