Skip the auto shop - Our mechanics make house calls

Q: 2011 Dodge Avenger Transmission

asked by on

hello. I recently found out that I will need a new transmission for my 2011 Dodge Avenger Lux. And I don't quite understand why based on the problem that was reported to me. I was told that there was a 3rd and 4th gear incorrect ratio. So my question is, what does this mean in laymens terms? Does this issue actually require a brand new transmission or is this something that can be fixed without installing a whole new transmission? Really hoping that a mechanic can dumb it down to my level lol. Thanks

My car has 45497 miles.
My car has an automatic transmission.

A: Hello. The most basic way to put it is the ...

Hello. The most basic way to put it is the 3rd and 4th gear are slipping. What was your concern when you had the car diagnosed? Was is just the Check Engine Light, or did you notice a problem with the transmission. The engine and transmission computer (PCM) closely monitors the transmission for malfunctions. It uses the input of 3 speed sensors.

Here is an example. We'll say that 3rd gear is 2:1, and 4th gear is 1:1. If the engine is spinning at 4000 rpm, then the output of the transmission in 3rd gear should be 2000 rpm. In 4th it would be 4000 rpm.

If the output sensor is not reading this specific rpm, the computer will set an incorrect ratio code. The gears themselves do not slip, the clutch packs that hold the gear can slip for many reasons. Now there are two things that can be going on.

The computer is correct, the gears are slipping. You will most likely know when the transmission is slipping when the computer is wrong. It could be a sensor misinterpretation or malfunction. Now, no matter what, if the code sets, the PCM will put the car into "limp" mode. You will notice this. The engine will have reduced power and the transmission will default to a preset gear. It is very possible that the transmission will need to be replaced due to this condition as long as it was properly diagnosed. You may want to have another expert inspect the car for you in person to ensure that the proper diagnosis was made.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 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

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Car won't go in gear when hot?

Hi there, thanks for writing in. I'd be happy to help. Your transmission is a computer-controlled transmission which can be affected even when something as simple as a weak battery is the issue. I would first suggest checking the battery...

Q: Car makes noise over 30 mph

Several components can cause strange noises during vehicle operation. The sluggish symptom points to a lack of power, which can come from a fault in the engine or transmission as the engine makes the power and the transmission puts that...

Q: Leaking coolant, not overheating, oil looks good. what is going on?

Hi there. Unfortunately, without being there to physically inspect your Nissan, it's hard to give you a good opinion. However, if you're frequently adding coolant to your radiator or overflow tank, it's possible that you have a coolant leak somewhere...

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...
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...
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...