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 MANAGEMENTTECHNICAL SERVICE BULLETINS
1985 Plymouth Conquest L4-2555cc 2.6L SOHC Turbo
Powertrain Management: Technical Service Bulletins
1985 Plymouth Conquest L4-2555cc 2.6L SOHC TurboSECTION Technical Service Bulletins
- Customer Interest
- By Symptom
- All Technical Service Bulletins
- Flooded Engine - Service Precautions
- TPS - MIL ON/Erratic Idle/Acceleration Sag
- TPS - Cold Engine Sag, Cold Engine Surge
- Spark Plugs - Oil Fouling/Misfire on Hard Acceleration
- ECU - Rough Engine Idle
- Idle Speed/Air Flow Sensor - Manual Revisions
- Turbocharger - Service Manual Correction
- ECI Driveability Tester - Usage
- ECI System - Check Procedure Chart
- ECI System - Service Manual Revision
- Overdrive Switch - Removal Procedure
- Overdrive Indicator Switch - Deletion/Manual Update
- Propane Idle Adjustment - Determination Guidelines
- Fuel - Alcohol Fuel Recommendations
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:
- • 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.