Mitsubishi Mitsubishi 3000GT 1990-1993 Emissions & Sensors Specifications
Mitsubishi Mitsubishi 3000GT 1990-1993

Mitsubishi Mitsubishi 3000GT 1990-1993 Emissions & Sensors Specifications

Detailed technical specifications for emissions sensors in the 1990-1993 Mitsubishi 3000GT. Learn about oxygen sensors, EGR sensors, and their roles in maintaining engine efficiency and reducing emissions.

Updated

Overview Specifications

This document provides detailed specifications and technical information about the emissions sensors for the 1990-1993 Mitsubishi 3000GT. It is designed to assist owners, mechanics, and enthusiasts in understanding the components, functionality, and maintenance of the emissions system. The document is organized into sections for easy navigation, with search functionality to quickly locate specific details. Use the 'How To' section for guidance on navigating and searching the document efficiently.

How to Use

Use the search bar to find specific terms or components related to emissions sensors. Enter keywords like 'O2 sensor' or 'catalytic converter' to locate relevant information instantly.

Browse through the sections by scrolling or using the table of contents. Each section is clearly labeled and contains subsections with detailed technical points for easy reference.

Key Specifications

O2 Sensor Voltage Range

0.1-0.9 V

Catalytic Converter Temperature

400-600°C

EGR Valve Flow Rate

5-15 L/min

Sensor Replacement Interval

60,000-90,000 miles

EGR System Efficiency

Up to 90% reduction in NOx

Available Specifications

Oxygen Sensors

The oxygen (O2) sensors in the Mitsubishi 3000GT are critical for monitoring the air-fuel ratio and ensuring optimal combustion. This section covers the types, locations, and maintenance of these sensors.

Types and Locations
  • Upstream O2 sensor located before the catalytic converter
  • Downstream O2 sensor located after the catalytic converter
  • Heated O2 sensors for faster warm-up
  • Zirconia-based sensors for accurate readings
Maintenance and Troubleshooting
  • Replace O2 sensors every 60,000-90,000 miles
  • Check for contamination from oil or coolant leaks
  • Use a multimeter to test sensor voltage output
  • Inspect wiring for damage or corrosion

Catalytic Converter

The catalytic converter reduces harmful emissions by converting pollutants into less harmful gases. This section explains its role, construction, and common issues.

Function and Design
  • Converts CO, NOx, and hydrocarbons into CO2, N2, and H2O
  • Ceramic honeycomb structure coated with catalysts
  • Inlet and outlet pipes for exhaust flow
  • Heat shield to protect surrounding components
Common Problems
  • Clogging due to unburned fuel or oil
  • Thermal degradation from overheating
  • Physical damage from road debris
  • Efficiency loss over time

Exhaust Gas Recirculation (EGR) System

The EGR system reduces nitrogen oxide emissions by recirculating a portion of exhaust gases back into the combustion chamber. This section covers its components and operation.

Components
  • EGR valve to control gas flow
  • EGR cooler to reduce gas temperature
  • Vacuum control system for valve operation
  • Sensors to monitor gas flow and temperature
Operation and Maintenance
  • Inspect EGR valve for carbon buildup
  • Check vacuum lines for leaks or blockages
  • Test EGR sensor functionality
  • Clean or replace clogged EGR passages

Component Specifications

Overview

Type
Oxygen Sensor
Configuration
Single-wire
Platform
Internal Combustion Engine
Material
Zirconia Ceramic
Location
Exhaust Manifold

Dimensions

Length
3.15 inches (80 mm)
Diameter
0.63 inches (16 mm)
Thread Size
M18 x 1.5
Sensor Tip Length
0.79 inches (20 mm)
Sensor Tip Diameter
0.24 inches (6 mm)
Wire Length
12 inches (305 mm)
Weight
0.22 lbs (100 g)

Materials

Sensor Body
Stainless Steel
Sensor Element
Zirconia Ceramic
Protective Tube
Stainless Steel
Wire Coating
Heat-resistant Silicone

Features

Performance
  • High-temperature resistance
  • Fast response time
  • Accurate oxygen level detection
Durability
  • Corrosion-resistant materials
  • Long service life
  • Resistant to exhaust contaminants
Compatibility
  • Direct fit for Mitsubishi 3000GT
  • Compatible with OEM ECU
  • Works with unleaded fuel
installation
  • Plug-and-play design
  • Standard thread size
  • Includes wiring harness

Safety Features

Thermal Protection
  • Heat-resistant coatings
  • Insulated wiring
Electrical Safety
  • Short-circuit protection
  • Waterproof connectors

Comfort Features

Ease Of Use
  • Simple installation process
  • Clear diagnostic feedback
Driving Experience
  • Improved fuel efficiency
  • Reduced emissions

Accessories

installation Tools
  • Oxygen sensor socket
  • Anti-seize compound
  • Wire crimping tool
Replacement Parts
  • OEM gaskets
  • Heat shields
  • Wiring harness

Maintenance

Service interval
60,000 miles or 60 months
Service Items
  • Inspect sensor for contamination
  • Check wiring integrity
  • Test sensor output voltage
  • Clean sensor tip if necessary
  • Replace if faulty
Maintenance Notes
Use anti-seize compound during installation to prevent thread damage.

Warranty

Standard Warranty
Miles: 24,000
Years: 2
Coverage: Defects in materials and workmanship
Extended Warranty
Miles: 60,000
Years: 5
Coverage: Replacement due to failure
Warranty Terms
Warranty void if sensor is damaged during installation or used with leaded fuel.

Production Details

Manufacturer
Mitsubishi Electric
Manufacturing Process
  • Precision ceramic molding
  • High-temperature sintering
  • Automated assembly
Quality Control
Testing Procedures: Voltage output testing, Thermal cycling, Vibration resistance testing
Certifications: ISO 9001, OEM standards
Sustainability Practices
  • Recyclable materials
  • Energy-efficient manufacturing
Production Metrics
Units Per Day: 5000
Defect Rate: 0.01%

Service Information for emissions_sensors Service

Maintenance and service requirements specific to this component

30,000
30
  • Inspect sensor for contamination
  • Check wiring connections
  • Test sensor output voltage
  • Clean sensor tip if necessary

Ensure engine is cool before inspection.

60,000
60
  • Test sensor response time
  • Inspect for physical damage
  • Check for exhaust leaks
  • Replace if performance is degraded

Use diagnostic tools for accurate testing.

100,000
100
  • Replace sensor as preventive maintenance
  • Inspect exhaust system for wear
  • Verify ECU compatibility
  • Test overall emissions system

Replacement recommended regardless of sensor condition.

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

Are the emissions sensors for the 1990-1993 Mitsubishi 3000GT compatible with other models?

The emissions sensors for the 1990-1993 Mitsubishi 3000GT are specifically designed for this model and may not be compatible with other vehicles. These sensors are calibrated to meet the emissions standards and engine specifications of the 3000GT. Always verify part numbers and compatibility with your vehicle's VIN or consult a Mitsubishi dealership before purchasing or installing sensors for other models.

Q2

What maintenance is required for the emissions sensors on a 1990-1993 Mitsubishi 3000GT?

Regular maintenance for emissions sensors includes periodic inspections for damage or contamination, ensuring proper electrical connections, and checking for fault codes using an OBD-I scanner. Clean the sensors gently with a specialized cleaner if necessary. Replace sensors every 60,000-100,000 miles or as indicated by diagnostic trouble codes. Always follow the manufacturer’s recommendations to maintain optimal performance and compliance with emissions standards.

Q3

How do I replace the emissions sensors on a 1990-1993 Mitsubishi 3000GT?

To replace the emissions sensors, first, locate the sensors near the exhaust manifold and catalytic converter. Disconnect the electrical connector and use an appropriate wrench to remove the sensor. Apply anti-seize compound to the threads of the new sensor to prevent corrosion. Install the new sensor, tighten it to the manufacturer’s torque specification, and reconnect the electrical connector. Clear any fault codes with an OBD-I scanner after installation.

Q4

What should I do if the emissions sensor on my 1990-1993 Mitsubishi 3000GT is malfunctioning?

If the emissions sensor is malfunctioning, first check for fault codes using an OBD-I scanner. Inspect the sensor for physical damage, contamination, or loose connections. Clean the sensor if necessary or replace it if it’s faulty. Verify the exhaust system for leaks or damage that could affect sensor readings. If the issue persists, consult a professional mechanic for further diagnosis and repair.

Q5

How can I optimize the performance of the emissions sensors on my 1990-1993 Mitsubishi 3000GT?

To optimize emissions sensor performance, ensure the engine is properly tuned and running efficiently. Use high-quality fuel and replace air and fuel filters regularly. Keep the exhaust system in good condition to prevent leaks or blockages. Regularly inspect and clean the sensors to avoid contamination. Follow the manufacturer’s maintenance schedule and address any diagnostic trouble codes promptly to maintain optimal emissions control.

Factory Service Resources

Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.

Mitsubishi 3000GT Service Manual (1990-1993)

Coming Soon

Comprehensive service manual covering all aspects of the 1990-1993 Mitsubishi 3000GT, including emissions systems and sensor specifications.

Emissions Sensor Technical Bulletin

Coming Soon

Technical service bulletin addressing common issues and updates for emissions sensors in the 1990-1993 Mitsubishi 3000GT.

Mitsubishi 3000GT Parts Catalog

Coming Soon

Parts catalog detailing emissions sensors and related components for the 1990-1993 Mitsubishi 3000GT.

About the Author

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Alan Montanye - Automotive Technical Specialist
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Alan Montanye

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