Symptoms:

  • RPM surge or chatter on acceleration
  • Push belt slippage & pulley fracture

Cause:

Loss of pressure control to the secondary pulley. Low pressure to the pulley causes chatter, push belt slip, surface fretting and metal contamination. With low pressure, pully diameter will not change and ratio remains the same.

Correction:

Recondition the bore using the Sonnax tool kit and install the Sonnax oversized secondary pulley control valve kit.

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.

JF011E (RE0F10A) Oversized Secondary Pulley Control Valve Kit Vacuum Test Locations