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

  • 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