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 HESITATES OR POOR ACCELERATION
1985 Plymouth Conquest L4-2555cc 2.6L SOHC Turbo
Engine Hesitates or Poor Acceleration
1985 Plymouth Conquest L4-2555cc 2.6L SOHC TurboSECTION Engine Hesitates or Poor Acceleration
1. Malfunctioning ECU.
2. Malfunctioning ignition system.
3. Faulty pressure exchange solenoid valve.
4. Malfunctioning atmospheric pressure sensor.
5. Malfunctioning intake air temperature sensor.
6. Damaged or disconnected vacuum line.
7. Broken, shorted or improperly secured harness connector.
8. Malfunctioning air flow sensor.
9. Malfunctioning engine coolant temperature sensor.
10. Malfunctioning throttle position sensor.
11. Stuck EGR control solenoid valve.
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.