Q: transmission (ax4n) is not going into overdrive

asked by on

Fluid is dark red and transmission (ax4n) is not going into overdrive, tho it feels like it goes into 4th gear. Some times the car feels like it bogshould down from a stop like something locking and Unlocking, but when I manually start from 1 low I doesn't seemseem like the torque convert is locking and unlocking from the start causing it to jutter from a dead stop sometimes. I also got a message on my instant data screen and it says check transmission when it attempts to activate overdrive; and to top it off I got a codes p0171 (lean bank 1) p0174 (lean bank 2) p0761 (Shift Solenoid C Performance or Stuck Off). I don't know if clutch friction material cause the value body to clog up.2 to 3 shifts with a thud with light acceleration like the rpm goes up then it waits then the gear is dropped with a firm thud. It does this intermediately.

My car has 99174 miles.
My car has an automatic transmission.

You will need to have the transmission tested to see if the transmission solenoid for the torque converter lock up solenoid is stuck or bad. The transmission fluid should also be checked to see if it is full of clutch material or metal. This may cause the solenoid issues.

In addition, the two lean codes should be checked by looking at the intake system to see if there is any vacuum leaks or a mass air flow sensor that is reading the wrong altitude. This will not set a mass air code all the time and may cause lean codes. To have this fully diagnosed, I recommend having a trained professional give your vehicle a comprehensive inspection in order to pinpoint any faults and make necessary repairs.

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. transmission (ax4n) is not going into overdrive

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: My 2000 ford expedition is showing 0171 and 0174 codes do you have a estimate to fix?

The codes P0171 and P0174 point to a lean condition picked up by the oxygen sensors in the vehicle's exhaust system. Since there is a warning from both banks, it may be safe to say that this is could be...

Q: I have an issue with my vehicles' rear air springs.

If one air spring will hold pressure and the other will not, there is an air leak in the part of the system that operates the spring that will not hold pressure. The leak can be in the line between...

Q: I have trouble starting the vehicle every time I put gas in the car

As you may know, this issue is commonly related to the evaporative emissions (EVAP) system which is comprised of a few components, one of which you have already addressed, the purge valve. In some cases, when you have an air...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
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...