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?

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  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: I failed a smog check with the codes PO171 & PO174, saying the system is too lean on the bank 1 & 2. Can you tell me what the problem is?

Hi there. When the two codes P0171 and P0174 come up for a lean system on both banks of your engine, then either all of the fuel injectors are not working properly or your fuel pressure has dropped. Check the...

Q: COOLANT LEAK 1978 Lincoln Continental Mark V

Hi - I believe you have a leak in the heater core - the tiny radiator under the dash (inside the big black plastic box you mention) that converts hot engine coolant to heat for the passengers. There is no...

Q: I'm looking to buy an 01 cobra but the guy selling it says there is a lifter problem. How serious is this and should I buy?

The lifter is not too much of a problem, but it could be costly to replace if you are having a technician replace it. You can try changing the engine oil and filter and running a oil treatment in the...

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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.