Symptoms:

  • Uncontrollable shift timing
  • Low line rise
  • Overheated clutch
  • Overheated band
  • TV pressure imbalance

Cause:

The throttle valve plug wears the sleeve, allowing throttle valve feed oil to leak past the plug and exhaust.

Correction:

Sonnax throttle valve plug kit includes a tightly toleranced O-ringed sleeve manufactured to resist excessive wear.

AOD

Throttle Valve Plug Kit
Part No. 76989K

O-Ring Style

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

Uncontrollable throttle pressure due to oil loss is a common complaint in vehicles with Ford AOD transmissions. This results in low line pressure and poor throttle and shift timing adjustments. The hardened steel throttle valve plug continuously reciprocates within the aluminum throttle valve sleeve, wearing the inside diameter of the sleeve. This wear allows throttle valve feed oil to leak past the plug and exhaust, resulting in poor line rise. This excessive leakage can be eliminated by installing Sonnax throttle valve plug kit 76989K.

  • The throttle valve sleeve is manufactured from high-quality aluminum to prevent wear
  • O-Rings added to the outside diameter of the sleeve prevent feed oil from escaping past the valve body bore
  • Steel plug has been tightly toleranced to allow minimum clearance with the inside diameter of the sleeve, thus restoring the hydraulic integrity of the assembly
  • Plug
  • Sleeve
  • O-Rings (2)
  • AOD Throttle Valve Plug Kit 76989K
  • AOD Throttle Valve Plug Kit 76989K

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.

AOD Throttle Valve Plug Kit Vacuum Test Locations