To prevent converter slippage, restricted cooler flow and possible hydraulic noise, remove the cooler line drainback valve.
Under extreme pressure or temperature conditions, the converter/lube circuit in listed Chrysler RWD units can be restricted by the PR valve. The practice of drilling a hole between passages is problematic. This outdated technique contributes to slow engagements or — if the hole is improperly drilled — excessive converter pressure and low line pressure.
The best way to improve oil flow is to replace the OE valve with Sonnax lube regulator pressure regulator valve 22771A-02K, which ensures oil flow under extreme operating conditions and prevents drainback when the truck is off.
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.
November 26, 2004
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Contact a Sonnax Parts Distributor.