PCA MODULATOR SPRING (5R55N)
# 43682

PCA Modulator Spring 5R55N Only

PCA MODULATOR SPRING (5R55N)

Symptoms:

  • Engine stall
  • No TCC release
  • TCC cycling
  • Burnt converter

Cause:
The OE valve springs are subject to breakage or fatigue failure, preventing proper operation of the associated valve.

Correction:
Replace the broken or fatigued OE spring with the Sonnax replacement spring to restore proper spring rate.


The OE valve springs are subject to breakage, bending or fatigue failure. Broken portions of the spring can cause the associated valve to stick in either the fully applied or released position. A fatigued spring will not have enough force to fully stroke the valve to the released position. Complaints vary depending upon specific location, but can be seen in the chart. The Sonnax springs will restore proper function to the associated valve when replacing a broken, bent or fatigued spring.rate of the intermediate servo and direct clutch, which should be applied in 4th and 5th gear. The Sonnax 4-3 Pre-Stroke Valve Spring addresses these complaints. This spring is not used on 5R55W & S units.

SONNAX Installation Instructions

Type of Product: Springs & One Way Clutches
Qty Needed:
Years:
Alternative #:
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