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 DIAGNOSISMAINTENANCETECHNICAL SERVICE BULLETINS
1985 Plymouth Conquest L4-2555cc 2.6L SOHC Turbo
Maintenance: Technical Service Bulletins
1985 Plymouth Conquest L4-2555cc 2.6L SOHC TurboSECTION Technical Service Bulletins
- Customer Interest
- By Symptom
- All Technical Service Bulletins
- Spark Plugs - Oil Fouling/Misfire on Hard Acceleration
- Idle Speed/Air Flow Sensor - Manual Revisions
- Engine - Oil Application
- Engine Oil - New `SG' Level Oil
- Engine Coolant - Recycling Recommendations
- Automatic Transmission - New Fluid Type
- Fuse Block - Fuse Applications
- R-12 to R-134A A/C Adaptation Procedure
- Overview
- Procedure
- R-134A Adaption Component Chart (1 of 4)
- R-134A Adaption Component Chart (2 of 4)
- R-134A Adaption Component Chart (3 of 4)
- R-134A Adaption Component Chart (4 of 4)
- O-Ring Location Chart
- Compressor Identification Chart (1 of 2)
- Compressor Identification Chart (2 of 2)
- R-134A Performance Chart (1 of 2)
- R-134A Performance Chart (2 of 2)
- R-134A Adaption Label (P/N 4762869)
- Propane Idle Adjustment - Determination Guidelines
- Wheels - Reconditioned Wheel Usage
- Steering/Suspension - Wheel Hub/Bearing Inspection COLL.
- Collision - Safety Cert./Tire Press. Label Replacement
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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.