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HOMESERVICE MANUALSPLYMOUTH1984HORIZON BASE, 1.6 AREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 10 (ENGINE CONTROLS - BASIC TESTING)FUEL SYSTEMFUEL PRESSURERELIEVING FUEL PRESSURE (2.2L & 2.5L TBI)
1984 Plymouth Horizon Base, 1.6 A

Relieving Fuel Pressure (2.2L & 2.5L TBI)

1984 Plymouth Horizon Base, 1.6 ASECTION Relieving Fuel Pressure (2.2L & 2.5L TBI)
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 1994 Plymouth Sundance, 1994 Plymouth Acclaim, 1994 Eagle Vision, 1994 Dodge Spirit, and 1994 Dodge Shadow. However, it is still accessible from the selected car via links, so may be relevant.

Slowly open fuel tank cap to release pressure in tank. Disconnect injector harness connector at edge of throttle body. Using jumper wire, ground injector harness connector terminal No. 1. See Fig 1 . Using a second jumper wire, apply battery voltage to injector harness connector terminal No. 2. DO NOT apply battery voltage to terminal No. 2 for more than 5 seconds. Remove jumper wires. Connect injector wiring harness connector. Fuel pressure is now released.

Fig 1: Injector Harness Connector Terminal ID (2.2L & 2.5L TBI)
G93B39629Courtesy of CHRYSLER CORP.
RENDER: 1.0x

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

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