Q: Transmission wont engage Drive or 3rd Gear

asked by on September 28, 2016

I was driving my car and hit a bump hard, as soon as I hit my drive stopped working. I can shift the gears but Drive and 3rd gear do not engage. 2nd will slip a lot but 1st and reverse work fine. I changed my transmission fluid after that to see if i could find the problem easy but inside my pan was a chunk of something? I'm not sure what it is but my car is just sitting.
My car has an automatic transmission.

Hello, thanks for writing in. Of course, the timing of the transmission breakdown you experienced and the impact you are describing is too coincidental to be unrelated. You have not described any damage to the transmission oil pan, which would have been my first thought as the pan is closest to the ground and if it were hit (dented) such could affect the internal valve body assembly or linkages. The external shift linkage(s) should be checked for damage. The shift linkage controls the manual valve in the transmission which valve has to be in the right position(s), depending on your gear selection, for the transmission to actually work.

With regard to the debris in the pan, if it is a sizable chunk of solid metal. Obviously that could be an important clue (be sure to save if it is to show the mechanic). A mechanic would first look at the obvious and relatively simple causes for the shift faults that you are describing, and the components that would control wiring to the transmission and the valve body itself. If you would like to have the shifting problem inspected, consider YourMechanic, as a certified technician will be able to come to your home or office to diagnose the issue and advise on the proper repair.

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

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

2004 mitsubishi endeavor overheating while driving, cools while idling or in traffic

Based on your description it sounds like the overheating is accompanied by a coolant leak. Coolant leaks can be either a cause OR a consequence of overheating. Be sure not to drive the car if it is overheating because overheating...

My check engine light is on and I have a code P0401 in my 2010 Chrysler Town & Country

Hello. Typically when you get this code it is because you have low flow in the EGR system. If the EGR valve is good and if the tube is clear then you either have a clog in the intake manifold...

Can't pass emissions test even though codes pass.

Hello, To get the readiness monitors to pass it requires driving the sometime in a different fashion than what you're used to. To start, the fuel tank needs to be between 3/4 and 1/4 tank and the vehicle must be...

Related articles

The 10 Transmission Problems to Never Ignore
There’s nothing quite like transmission problems to stress out the average car owner. They are, at best, inconvenient and, at worst, very expensive. Proper...
Symptoms of a Bad or Failing Shift Selector Cable
Common signs include the indicator not matching the gear and the vehicle not turning off, starting in another gear, or not going into gear at all.
How a Hydraulic Clutch System Works
If your car transmission has a hydraulic clutch, chances are you’re wondering exactly how it works within your shifting system. Most clutches, especially...