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

Learn More About Zip Valve™ Drop-In Repairs

More From This Category

Sonnax Rear Sun Gear Thrust Washer, Powerglide, Each

Sonnax Rear Sun Gear Thrust Washer, Powerglide, Each

$9.38

Sonnax Line Pressure Booster Kit, Ford, 4R100, E4Od, Each

Sonnax Line Pressure Booster Kit, Ford, 4R100, E4Od, Each

$54.43

TCI Shield Flexplate For Ford Trans W/Big Block 460

TCI Shield Flexplate For Ford Trans W/Big Block 460

$341.52

Motive Gear Axle Shaft, 1541 Manganese, 5x4.75 in. Bolt Pattern, 29 in. Length, 26SPL, For CHEVROLET S10 1983–1989, Each

Motive Gear Axle Shaft, 1541 Manganese, 5x4.75 in. Bolt Pattern, 29 in. Length, 26SPL, For CHEVROLET S10 1983–1989, Each

$200.51