Ford E4OD, 4R100 transmissions often have problems with converter overheat, codes 62, 628, 1744, high line pressure and low cooler flow. The OE valve can close off critical converter/cooler circuit under high-demand situations, causing the TCC to drag on and glaze the lining at idle, or restricting converter/cooler charge during high load, leading to converter slip codes, overheat and lube failures. Sonnax oversized line-to-lube pressure regulator valve kit 36424-16K corrects these problems with a patented internal line-to-lube passage with antidrainback check valve and a revised balance-end orifice.

Hardcoat anodized aluminum valve combats premature wear
Internal check valve capsule allows full-time flow to the converter/cooler, but prevents drainback
An added orifice at the balance end ensures sufficient line pressure is present to balance against EPC and spring pressure
Carbide reamer in tool kit allows bore to be resized despite hardness of pump body material

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