• TCC slip
  • Lockup shudder
  • Low cooler flow
  • Erratic switch codes
  • Erratic coastdown bumps
  • 2-1 Soft
  • 1-2 Long


The cooler bypass valve gets stuck open, reducing converter apply pressure.


Sonnax drop-in bypass plug disables the OE bypass valve and directs all fluid through the cooler.

40TE, 41AE, 41TE

Bypass Plug
Part No. 92836-01K

Fits '94–'97 units with internal bypass.

Package Quantity: 2

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Listed Chrysler transmissions include a bypass valve in the transmission case. The intent of the bypass valve is to re-route ATF flow from the cooler to the lube circuit if there is a blockage in the cooler. Often, the OE bypass valve becomes stuck in the open position due to wear or contamination. With the bypass valve constantly open, much of the ATF does not pass through the cooler. This can lead to overheating. Also, with the bypass valve stuck open, fluid pressure is relieved from the system. If the pump volume cannot replace the relieved pressure, then system pressure will remain low and lead to converter clutch slippage. Sonnax bypass plug 92836-01K restores cooler flow without removing the unit from the vehicle. Drop-in Zip Valve™ installs quickly and easily.

Learn More About Zip Valve™ Drop-In Repairs

OE bypass valve does not have to be removed to install Sonnax bypass plug.

  • 40TE, 41AE, 41TE Bypass Plug 92836-01K
  • 40TE, 41AE, 41TE Bypass Plug 92836-01K