• Hydraulic bind on accelerator linkage
  • Low line pressure
  • Poor throttle pressure control
  • No upshifts
  • No kickdown
  • Sensitive shift timing
  • Late upshifts


Wear on the throttle control valve and/or throttle plunger sleeves from the steel valves can allow TV oil to exhaust.


Sonnax drop-in throttle control valve sleeve is manufactured from highly wear-resistant aluminum to eliminate cross leaks.


Throttle Control Valve Sleeve
Part No. 86940-03

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Vehicles with Ford ATX transmissions frequently experience poor throttle pressure control, very late or no upshifts and a hydraulic bind on accelerator linkage. These complaints can be the result of a worn throttle control valve sleeve. The hardened steel throttle control valve continuously reciprocates in the aluminum sleeve. This wears the inside diameter of the sleeve and allows oil crossleakage. Regulated throttle valve oil can become open to exhaust, resulting in throttle pressure and shift problems. If throttle valve balance oil leaks, the result can be very late or no upshifts. Sonnax throttle control valve sleeve 86940-03 eliminates these problems.

  • Held to tight tolerances to restore sealing integrity with OE valves
  • Manufactured from hardcoat anodized aluminum to prevent wear
  • Drop-in Zip Valve™ parts install quickly and easily
Learn More About Zip Valve™ Drop-In Repairs
  • ATX Throttle Control Valve Sleeve 86940-03
  • ATX Throttle Control Valve Sleeve 86940-03