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 DIAGNOSISTECHNICAL SERVICE BULLETINS
1985 Plymouth Conquest L4-2555cc 2.6L SOHC Turbo
Repair and Diagnosis: Technical Service Bulletins
1985 Plymouth Conquest L4-2555cc 2.6L SOHC TurboSECTION Technical Service Bulletins
- How to Find Technical Service Bulletins by Category/Symptom
- Customer Interest
- TPS - MIL ON/Erratic Idle/Acceleration Sag
- TPS - Cold Engine Sag, Cold Engine Surge
- Front Disc Brakes - Squeaks on Stopping
- Rear Disc Brakes - Squeak During Stopping
- Spark Plugs - Oil Fouling/Misfire on Hard Acceleration
- A/C Compressor Clutch - Repeat Failures
- ECU - Rough Engine Idle
- Battery/Charging System - Malfunction
- Radio - Volume Control Inoperative
- Radio - Rapid Crackling Noise in FM Mode
- Oil Pressure Sender - Leaks Oil
- Front Sway Bar - Squeak/Squawk Noises
- Wipers/Washers - Wipers Smear or Streak Windshield
- M/T Shift Lever - Buzzes During Acceleration
- All Technical Service Bulletins
- Body/Frame - Welded Sheet Metal Repairs And Replacements
- Body - Don't Apply Corrosion Protection On Plastic Panels
- Body - Front Bumper Fascia Repair For License Bracket Holes
- Collision - Safety Cert./Tire Press. Label Replacement
- Steering/Suspension - Wheel Hub/Bearing Inspection COLL.
- Wheels - Reconditioned Wheel Usage
- Restraints - Replacement Seat Covers/Seat Cover Repairs
- Restraints - Use Of Salvaged Restraint System Components
- Body/Frame - Structural Repair Components
- Body/Frame - Usage Of Heat For Repair
- Technical Service Bulletins - New Driveability Group
- Flooded Engine - Service Precautions
- TPS - MIL ON/Erratic Idle/Acceleration Sag
- TPS - Cold Engine Sag, Cold Engine Surge
- Front Disc Brakes - Squeaks on Stopping
- Rear Disc Brakes - Squeak During Stopping
- Spark Plugs - Oil Fouling/Misfire on Hard Acceleration
- A/C Compressor Clutch - Repeat Failures
- Cylinder Head and Block - Resurface Limits
- Engine - Torque Specification Revision
- Oil Pump Screen - Manual Revision
- Synthetic Resin Bumpers - Painting
- Upholstery - Cleaning Procedure
- ECU - Rough Engine Idle
- Idle Speed/Air Flow Sensor - Manual Revisions
- Battery - Checking Procedure Revision
- Battery/Charging System - Malfunction
- Radio - Volume Control Inoperative
- Radio - Rapid Crackling Noise in FM Mode
- Turbocharger - Service Manual Correction
- Power Window Switch - Manual Revision
- Radio/Clock - Defeat Function Explanation
- ECI Driveability Tester - Usage
- ECI System - Check Procedure Chart
- Oil Pressure Sender - Leaks Oil
- Front Sway Bar - Squeak/Squawk Noises
- ECI System - Service Manual Revision
- Radio - Trembling Noise/Distortion From Speakers
- Wipers/Washers - Wipers Smear or Streak Windshield
- Engine - Oil Application
- Engine Oil - New `SG' Level Oil
- Engine Coolant - Recycling Recommendations
- A/T - Gasket Kit Installation
- Automatic Transaxle - Service Manual Correction
- A/T - Service Manual Revision
- A/T - Engine Vacuum Testing
- A/T - How To Use A Pressure Gauge
- A/T - Drive Axle and Wheel Lug Nut Torque Specifications
- A/T - Fluid Recommendation
- A/T - Slipping or No-Shift/Metal Sealing Rings
- A/T - Front Bushing Wear
- A/T - Math Formulas Part I
- A/T - Twenty Steps To Successful Repairs
- A/T - Math Part II
- A/T - Choosing the Right ATF
- KM132 M/T - 5TH Gear Revision
- Automatic Transmission - New Fluid Type
- Overdrive Switch - Removal Procedure
- Overdrive Indicator Switch - Deletion/Manual Update
- Fuse Block - Fuse Applications
- Engine - Oil Capacity, Manual Revision
- Wiring - Repair Instruction Sheets
- Paint - Codes/Cross References/Applications
- A/T - Valve Body/Check Valve Specification Revision
- Silent Shaft Sprocket Bolt - Torque Revision
- Cassette Player - Non Ejection/Tape Removal
- 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)
- M/T - Countershaft Gear Locknut Modification
- M/T Shift Lever - Buzzes During Acceleration
- Propane Idle Adjustment - Determination Guidelines
- Fuel - Alcohol Fuel Recommendations
- Seat Belt Extender - Types/Identification
- Body - Paint Overspray Removal Procedures
- Paint - Clearcoat Blending During Refinish Process
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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.