Model ZF 4HP-18: Installation

1984 Plymouth Horizon Base, 1.6 ASECTION Installation
WARNING: This page does not describe the selected car, but rather 16 other vehicles, including the 1990 Plymouth Sundance, 1990 Plymouth Laser, 1990 Plymouth Horizon, 1990 Plymouth Acclaim, and 1990 Eagle Talon. However, it is still accessible from the selected car via links, so may be relevant.
  1. Inspect drive plate for warpage, wear or damage and replace if necessary. To install transaxle, reverse removal procedure. Before installing transaxle, coat torque converter pilot hub with bearing grease and ensure that torque converter is fully installed into transaxle pump.
  2. Use Loctite No. 271 on torque converter mounting bolts. When installing inner ends of drive axle shafts into transaxle, ensure roll pin holes of axle shafts and output shafts are aligned. Refill transaxle and differential. Ensure proper adjustment of shift cable and throttle valve cable.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.