Q: Transmission slips if I shut truck off and restart it will do fine for a few seconds then slip again

asked by on

Transmission slip once you reach about 30 mph if I stop and restart engine transmission will shift fine until about 30 mph and slip again. Transmission fluid level is fine. Warning light for OD off came up then went back off.

My car has 150000 miles.
My car has an automatic transmission.

Hi there, thanks for writing in.

The reason is starts slipping at 30 is this is where it needs to change to second gear or third gear. The problem is most likely the servo piston for the second gear engagement is binding in the transmission housing due to a worn housing. The fix is to overhaul the transmission and have a sleeve put into the housing during the overhaul with an oversize servo kit. The only other fix would be to replace the transmission with a new or rebuilt unit. The reason it works after turning the car off and back on is because it sets a fault for itself and goes into limp mode, and turning it off will erase that fault until its seen again, at which point it will go into limp mode again. You can have this diagnosis verified by a qualified technician, such as one from YourMechanic, who can then provide you with a suggested repair plan.

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
  1. Home
  2. Questions
  3. Transmission slips if I shut truck off and restart it will do fine for a few seconds then slip again

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: How do I turn on or turn off the climate control system?

When the climate control system is turned off, then air from outside the vehicle will not enter the car’s cabin. To turn the climate control system on or off, press the Power button on the climate controls.

Q: Heater works when moving. Stops working when sitting at light. Makes a gurgling sound. What could be the problem?

Hello. Thank you for writing in. The most important part of the heating system is the coolant. The first step to take is to make sure your coolant level is topped off in the radiator and the overflow tank. If...

Q: My Ac is not geting cool

Hello. A few things that can cause your AC to blow hot are low refrigerant in the system, refrigerant leaks, problems with the compressor, or condenser. I would first check the system to see if it may be low on...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...
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...