Tool Required VB-FIX Required
- Burnt converter
- Bushing wear
- Converter concerns
- Lube failures
- Overheated transmission
Oscillation of the steel secondary pressure regulator valve within the aluminum casting causes wear, which will allow converter feed oil to leak to exhaust and not supply the lube circuit, resulting in converter complaints, burnt apply components and lube related failures.
Restore proper hydraulic control by refurbishing the bore and replacing worn components with the oversized Sonnax valve kit.
Oversized Secondary Pressure Regulator Valve Kit
- End Plug
- O-Rings (2) 1 Extra
Fits '00-Later V6 & V8, late models, Type 3 & 4 valve bodies.
The secondary pressure regulator valve in Toyota A340E/F late units receives regulated line fluid pressure from the main pressure regulator valve, and routes it to the converter and lubrication circuits. The continual oscillation of the steel valve within the aluminum casting creates wear, allowing this valuable fluid pressure to exhaust, resulting in converter complaints, burnt apply components and lube-related failures. The Sonnax oversized secondary pressure regulator valve kit 97741-18K restores proper hydraulic clearance in a refurbished bore and includes an O-ringed end plug to positively seal the balance pressure circuit.
- Valve is hardcoat anodized to reduce wear
- O-ringed end plug positively seals the balance pressure circuit
- Required Tool
- Related Parts
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- Related Tech Resources
- Valve Body Layout
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Vacuum tests at the ports indicated fail to hold at least 18 in-Hg.
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