Symptoms:

Loss of shift solenoid control pressure
Shift concerns

Cause:

Damage to the OE pressure switch boot/seal due to excessive line pressure can allow exhaust of shift solenoid control pressure.

Correction:

Replace the unused and damaged OE pressure switches with a Sonnax drop-in O-ringed end plug to prevent future damage and oil loss.

5R110W

Pressure Switch O-Ringed End Plug Kit
Part No. 36940-17K

Fits any of five locations.

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The original design of Ford 5R110W valve body included five hydraulic pressure switches. Although these switches were never actually enabled by the OEM or monitored by the computer, early valve bodies came through with all five switches installed as dummy plugs to seal up their circuits. Late valve bodies have all pressure switches except the direct clutch pressure switch removed and the locations in the casting were left unbored to essentially seal the circuit. The remaining OE direct clutch pressure switch in the late valve bodies is still not enabled or computer monitored.

With the excessive high line pressure that is a frequent problem in these units, it is common to find the OE pressure switches/dummy plugs damaged. This can result in loss of shift solenoid control pressure and shift complaints. Unused and damaged switches/plugs can be replaced with Sonnax pressure switch O-ringed end plug kit 36940-17K to prevent future damage and oil loss.

O-ring provides positive seal to prevent loss of shift control pressure
Drop-in Zip Valve^™ parts install quickly and easily

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Contents

End Plug
O-Ring

Valve Body Layout

Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.