Symptoms:

  • Code 62, 628, 1744
  • Engine stall on engagement in Reverse
  • High line pressure
  • Engine stumble on engagement in Reverse
  • Overheated converter

Cause:

OE valve can restrict converter charge and cooler flow due to wear, and/or insufficient balance oil keeps the PR valve in the high line pressure position.

Correction:

The Sonnax oversized pressure regulator valve kit has a patented internal line-to-lube passage with anti-drainback check valve that allows full-time flow to the cooler circuit, yet prevents dainback.

4R100, E4OD

Oversized Line-to-Lube Pressure Regulator Valve Kit
Part No. 36424-16K

Fits Ford E40D and 4R100 with F1, F5, F8 and E9 stamped pump castings.


You need this if... View Instructions Find a Distributor

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
  • Pressure Regulator Valve
  • Spring
  • Boost Valve Assembly
  • O-Rings (3) 1 Extra

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.

Ford E4OD, 4R100 Valve Body Layout

Ford E4OD, 4R100 Valve Body Layout

  • 4R100, E4OD Oversized Line-to-Lube Pressure Regulator Valve Kit 36424-16K
  • 4R100, E4OD Oversized Line-to-Lube Pressure Regulator Valve Kit 36424-16K

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.

NOTE: Values are with OE valve in place. Due to integral line-to-lube design in the Sonnax pressure regulator valve, vacuum testing may not be possible without modification.

4R100, E4OD Oversized Line-to-Lube Pressure Regulator Valve Kit Vacuum Test Locations