Skip the auto shop - Our mechanics make house calls

Q: Transmission shifting issue

asked by on

A few months ago I began a journey into transmission repair. It started with a slipping in second and third gears. So far I have replaced all solenoids. Then I went ahead and bought a kit and had it rebuilt and replaced the torque converter. I just finished having the valve body replaced this week. After each one of these repairs I am still not shifting properly and I'm at a loss at what to do next.

My car has 120000 miles.
My car has an automatic transmission.

Hello. If the transmission is on the vehicle it has to be diagnosed. Although there are a lot of parts in a transmission, conceptually it is actually pretty simply. There are electronic control circuits, electrically actuated solenoids, and hydraulically actuated values, pistons and clutch packs. The hard parts (gears, shafts, and so forth) are probably not implicated in your issue excepting a circumstance where a seal rides on a surface that is damaged (scratched). There is no way to guess as to what the issue is without tests (e.g., pressure tests) and also the electronic transmission controls (module) would have to be looked at. YourMechanic would be glad to professionally diagnose the transmission issue and let you know of the required repairs.

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

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!

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: Transmission slips while driving downhill - 1997 Chevrolet K2500 Suburban

There are many possible technical service bulletins the manufacturer has listed for this problem on your vehicle. The problems range from internal gears to pressure solenoids of the transmission. I suggest having the transmission pressures tested to see if the...

Q: After transmission replacement, trouble starting car

If you had the transmission recently replaced, then you may have an issue with the ground cable connection at the transmission connection being loose, or the starter cable is loose. If neither of these issues are happening, then you...

Q: Car making weird noises and hard to steer.

Hello, by the nature of your concern, I would say that you have a power steering pump that is low on fluid. A power steering pump being noisy is something that should be looked at and repaired sooner than later...

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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...