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 MANUALSOLDSMOBILE1985DELTA 88 V6-231 3.8LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTTECHNICAL SERVICE BULLETINS
1985 Oldsmobile Delta 88 V6-231 3.8L
Powertrain Management: Technical Service Bulletins
1985 Oldsmobile Delta 88 V6-231 3.8LSECTION Technical Service Bulletins
- Customer Interest
- Electrical - MIL ON/DTC's Set By Various Control Modules
- Electrical - Intermittent MIL/DTC P2138/Reduced Power
- Engine - Stalls on Drive/Reverse Engagement
- ECM/PCM - Damaged or Mis-Diagnosed
- Engine - Miss, Hesitation, or Roughness
- Fuel - No Start, Driveability, Excessive Alcohol Content
- Engine, A/T - Shift/Driveability Concerns/MIL ON
- By Symptom
- Abnormal wear/deterioration
- Customer Interest
- Electrical - MIL ON/DTC's Set By Various Control Modules
- Electrical - Intermittent MIL/DTC P2138/Reduced Power
- Engine - Stalls on Drive/Reverse Engagement
- ECM/PCM - Damaged or Mis-Diagnosed
- Engine - Miss, Hesitation, or Roughness
- Fuel - No Start, Driveability, Excessive Alcohol Content
- Engine, A/T - Shift/Driveability Concerns/MIL ON
- Driveability
- Erratic Operation
- Erratic Shifting
- High emissions
- Poor performance
- Starting problems
- Sticking/Binding
- All Technical Service Bulletins
- Vehicle - Engine And Sub Systems Flushing Info. (CANADA)
- Vehicle - Engine And Sub-Systems Flushing Recommendations
- Engine - THIS BULLETIN HAS BEEN CANCELED
- Fuel System - Fuel Injector Maintenance Cleaning
- Fuel System - GM Fuel System Treatment PLUS(R) Info.
- Electrical - MIL ON/DTC's Set By Various Control Modules
- Electrical - Intermittent MIL/DTC P2138/Reduced Power
- I/M 240 Repairs - Obtaining Technical Assistance
- Fuel - Pump & Sender Identification & Application
- Fuel Pumps, Pulsators ,Senders - Replacement Parts
- Engine - Stalls on Drive/Reverse Engagement
- MAP - Revised Output Chart for Codes 33, 34, 63, and 64
- Tools - Introduction Of The Fuel Injector Tester
- ECM/PCM - Damaged or Mis-Diagnosed
- Oxygen Sensors - Silica Contamination
- Engine Controls - MAF Sensor Warranty Return Program
- Engine - Miss, Hesitation, or Roughness
- Enhanced IM240 Program - Implementation Plan
- Emission - Enhanced Inspection Maintenance Programs
- I/M 240 Program - Equipment Purchase
- I/M Emissions Diagnostic Manual -Program
- Enhanced Emission I/M - Program Update
- Enhanced Emission Inspection Maintenance - Equipment
- EVAP System - Service of Connectors
- Oxygen Sensor Test - Revised Tech 1 Mass Storage CD
- PROM/MEMCAL - Identification Marks
- Fuel - How Fuel Economy Is Determined
- Fuel - Reformulated/Oxygenated Gasolines
- Fuel - No Start, Driveability, Excessive Alcohol Content
- Engine, A/T - Shift/Driveability Concerns/MIL ON
- Fuel System - E85 Fuel Usage Precaution
- Engine/Fuel System - Oil/Fuel Additive Information
- Fuel System - TOP TIER Detergent Gasoline (Canada)
- Fuel System - TOP TIER Detergent Gasoline
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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.