Tool Required VB-FIX Required
- Burnt converter
- Lube failures
- TCC apply codes
- TCC apply & release concerns
Excess wear in lockup relay bore due to frequent valve stroking prevents proper hydraulic control of TCC, lube and cooler circuits.
Recover hydraulic control and renew TCC/cooler/lube operation by reconditioning the bore and installing Sonnax oversized lockup relay valve kit.
Oversized Lockup Relay Valve Kit
- Lockup Relay Valve
- Control Valve
- End Plug
Toyota vehicles equipped with listed transmissions frequently exhibit TCC and lube/cooler flow problems due to excess wear in the lockup relay valve bore. This bore deterioration allows vital fluid loss, often resulting in TCC apply and release concerns, TCC codes, lube failures, overheating, and burned TCC lining. Reconditioning the bore and installing Sonnax oversized lockup relay valve kit 147741-07K shores up the hydraulic integrity of these circuits, restoring normal TCC/cooler/lube function.
- Hardcoat anodized aluminum valves combat premature wear
- Matched spring helps restore OE performance
- Required Tool
- Related Parts
- You need this if...
- Related Tech Resources
- Valve Body Layouts
You need this if...
Vacuum testing at the port(s) indicated fails to hold the recommended minimum in-Hg, or if wear is visually detected.
Click here to view PDF if instructions do not appear below.
Valve Body Layouts
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