Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSPLYMOUTH1985CONQUEST L4-2555CC 2.6L SOHC TURBOREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTESTING AND INSPECTIONSYMPTOM RELATED DIAGNOSTIC PROCEDURESENGINE WILL NOT START OR DIFFICULT STARTING
1985 Plymouth Conquest L4-2555cc 2.6L SOHC Turbo
Engine Will Not Start or Difficult Starting
1985 Plymouth Conquest L4-2555cc 2.6L SOHC TurboSECTION Engine Will Not Start or Difficult Starting
1. Malfunctioning fuel control system.
2. Malfunctioning ignition system.
3. Disconnected or damaged vacuum line.
4. No power supply to ECU.
5. Damaged control relay.
6. Malfunctioning ECI system.
7. Malfunctioning idle switch.
8. Malfunctioning injector.
9. Open resistor.
10. Improper fuel pressure.
11. Damaged ECU.
12. Broken, shorted or improperly secured harness connector.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
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.