Chrysler 200 2015-2017 Emissions & Sensor Bolt Torque Specifications
Chrysler 200 2015-2017

Chrysler 200 2015-2017 Emissions & Sensor Bolt Torque Specifications

This page provides the bolt torque specifications for various emissions sensors on the 2015-2017 Chrysler 200, ensuring proper installation and functionality.

Updated

Important Information

Safety guidelines and reference information for proper torque application

Quick Reference Guide
ft-lbs → Nm
× 1.356
ft-lbs → kg-m
× 0.138
Nm → ft-lbs
× 0.738
in-lbs → ft-lbs
× 0.083

Common Torque Patterns

Star Pattern

Used for wheels and other circular bolt patterns

Star Pattern torque pattern diagram showing proper bolt tightening sequence
Cross Pattern

Used for gaskets and cover plates

Cross Pattern torque pattern diagram showing proper bolt tightening sequence
Sequential Pattern

Used for head bolts and other critical components

Sequential Pattern torque pattern diagram showing proper bolt tightening sequence

Common Mistakes to Avoid

Over-tightening

Exceeding the specified torque value can stretch or break fasteners, damage threads, or crack components.

Prevention:

Always use a calibrated torque wrench and follow specifications exactly.

Incorrect Torque Sequence

Tightening bolts in the wrong order can cause uneven pressure distribution and potential leaks or damage.

Prevention:

Follow the manufacturer's specified torque sequence pattern.

Dirty Threads

Dirt, rust, or old thread locker can affect torque readings and proper fastener tension.

Prevention:

Clean and inspect all threads before assembly. Use new thread locker if specified.

Reusing TTY Bolts

Torque-to-yield bolts are designed to stretch and must not be reused.

Prevention:

Always replace TTY bolts with new ones. They are single-use only.

Dry vs. Lubricated

Not accounting for whether torque specs are for dry or lubricated fasteners can lead to incorrect tension.

Prevention:

Check if specs are for dry or lubricated threads. Use specified lubricant when required.

Recommended Tools

Torque Wrench (1/4" Drive)

Range: 2-25 ft-lbs
Small fasteners, delicate components

Torque Wrench (3/8" Drive)

Range: 10-100 ft-lbs
Most common automotive fasteners

Torque Wrench (1/2" Drive)

Range: 30-250 ft-lbs
Large fasteners, wheels

Angle Gauge

Torque-to-yield (TTY) bolts

Torque Wrench Care

  • Calibrate annually or after 5,000 clicks
  • Store at lowest setting
  • Keep clean and lubricated

Search Specifications

Search by component name, bolt size, or description

Torque Calculator

Convert between different torque units

Exhaust System

Torque specifications for various components within the exhaust system, including manifolds, pipes, catalytic converter, and related sensors.

1

Exhaust Manifold/Headers to Cylinder Head Bolts

M10 x 1.5
Torque Value
30 ft-lbs (41 N·m)
Important Notes
Ensure mating surfaces are clean and use new gaskets if necessary. Tighten bolts in a criss-cross pattern to ensure even clamping pressure.
2

Exhaust Pipe to Exhaust Manifold/Headers Bolts

M10 x 1.5
Torque Value
23 ft-lbs (31 N·m)
Important Notes
Ensure mating surfaces are clean and use new gaskets if necessary. Tighten bolts evenly to ensure a proper seal.
3

Catalytic Converter to Exhaust Pipe Bolts

M10 x 1.5
Torque Value
30 ft-lbs (41 N·m)
Important Notes
Ensure mating surfaces are clean and use new gaskets if necessary. Tighten bolts evenly to ensure proper sealing and prevent leaks.
4

Upstream (Pre-Cat) Oxygen (O2) Sensor

M18 x 1.5
Torque Value
33 ft-lbs (45 N·m)
Important Notes
Use anti-seize compound on the threads if needed. Ensure sensor is properly seated and tighten to specified torque.
5

Downstream (Post-Cat) Oxygen (O2) Sensor

M18 x 1.5
Torque Value
33 ft-lbs (45 N·m)
Important Notes
Use anti-seize compound on the threads if needed. Ensure sensor is properly seated and tighten to specified torque.

Egr System

Specifications for the EGR valve and related components.

1

EGR Valve Bolts

M8 x 1.25
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Use a torque wrench with an inch-pound scale or convert the torque to inch-lbs. Tighten bolts evenly to ensure a leak-free seal.

Intake System

Torque specifications for sensors and components related to the intake system, affecting air-fuel mixture.

1

Manifold Absolute Pressure (MAP) Sensor Mounting Bolt

M6 x 1.0
Torque Value
6 ft-lbs (8 N·m)
Important Notes
Be careful not to overtighten the small bolt; this could damage the sensor. Value is estimated based on typical M6 bolt torques.
2

Intake Air Temperature (IAT) Sensor Mounting Screw

M5 x 0.8
Torque Value
4 ft-lbs (5.5 N·m)
Important Notes
Be careful not to overtighten the small screw, this could damage the sensor. Value is estimated based on typical M5 screw torques.
3

Fuel Injector Rail Bolts

M8 x 1.25
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Tighten bolts evenly to ensure proper fuel rail alignment and sealing.

Evaporative Emissions System

Torque specifications for components within the EVAP system, such as the purge valve and fuel tank pressure sensor.

1

Purge Valve Solenoid Mounting Bolt/Screw

M6 x 1.0
Torque Value
6 ft-lbs (8 N·m)
Important Notes
Be careful not to overtighten the bolt or screw, this could damage the mounting points. Value is estimated based on typical M6 bolt torques.
2

Fuel Tank Pressure Sensor Mounting Bolt/Screw

M5 x 0.8
Torque Value
4 ft-lbs (5.5 N·m)
Important Notes
Be careful not to overtighten the screw, this could damage the sensor. Value is estimated based on typical M5 screw torques.

Troubleshooting Guide

Common issues, diagnostic steps, and prevention guidelines

Common Issues

Bolt stretching, stripped threads, uneven torque patterns

Loose Components

Symptoms:
  • Rattling or vibration noises
  • Visible movement in components
  • Uneven panel gaps
Solutions:
  • Clean threads and mounting surfaces
  • Replace damaged fasteners
  • Apply proper torque in sequence
  • Use thread locker if specified

Stripped Fasteners

Symptoms:
  • Unable to achieve proper torque
  • Fastener spins freely
  • Visible thread damage
Solutions:
  • Use thread repair kit if appropriate
  • Install thread insert (HeliCoil)
  • Replace component if threaded hole is damaged
  • Upgrade to higher grade fastener if recommended

Overtightened Components

Symptoms:
  • Cracked or deformed parts
  • Broken fasteners
  • Compressed gaskets or seals
Solutions:
  • Replace damaged components
  • Use new fasteners
  • Follow proper torque sequence
  • Verify correct torque specifications

Diagnostic Steps

Visual inspection, torque verification, thread assessment

1

Visual Inspection

Inspect the affected area for any visible signs of damage or wear

  • Check for cracks or deformation
  • Look for signs of excessive wear
  • Verify proper fastener installation
2

Torque Verification

Verify the torque applied to the fasteners

  • Check the torque wrench calibration
  • Verify the torque specification
  • Compare the applied torque to the specification
3

Thread Assessment

Assess the condition of the threads

  • Check for signs of thread damage
  • Verify the thread type and size
  • Check for proper thread engagement

Prevention Guidelines

Best practices, maintenance tips, tool care

Best Practices

  • Always follow the recommended torque specification
  • Use the correct type and size of fasteners
  • Verify the torque wrench calibration regularly

Maintenance Tips

  • Regularly inspect the affected area for signs of wear or damage
  • Replace damaged or worn-out components promptly
  • Keep the work area clean and organized

Tool Care

  • Regularly clean and maintain the torque wrench
  • Store the torque wrench in a dry and secure location
  • Verify the torque wrench calibration before each use

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

Why are torque specifications important for emissions sensors?

Proper torque is crucial for emissions sensors to function correctly and maintain a leak-free seal. Over-tightening can damage the sensor or its threads, leading to inaccurate readings or exhaust leaks. Under-tightening can result in loose connections, also causing inaccurate readings or leaks, and potentially sensor damage. Both scenarios can lead to check engine lights and reduced vehicle performance. For example, an overtightened O2 sensor could crack the housing, while an undertightened one might allow exhaust gases to leak, triggering a P0420 error code related to catalyst efficiency.

Q2

What happens if I don't have a torque wrench?

While a torque wrench is highly recommended for precise tightening, if you don't have one, you should tighten fasteners carefully by hand, gradually snugging them down. Avoid forcing or over-tightening. Check for any play or looseness. It is highly recommended to get a torque wrench as soon as possible for future work. Remember that even slightly overtightening can damage the sensors.

Q3

Are torque specs the same for all emission sensors on a 2015-2017 Chrysler 200?

Not necessarily. While many sensors might use similar torque values, it's essential to refer to the specific manufacturer's service manual for your vehicle's exact year and model. Oxygen sensors, for example, usually have a different torque specification compared to other sensors like temperature or pressure sensors. Always double-check before proceeding.

Q4

What should I do if I suspect a sensor bolt is stripped or cross-threaded?

If you encounter a stripped or cross-threaded bolt, DO NOT attempt to force it. You'll need to repair the threads using a thread repair kit or replace the component. Attempting to force a damaged bolt can cause irreparable damage to the exhaust system or the sensor itself. Consult a qualified mechanic if you are not comfortable with this type of repair. Remember, a damaged thread can not be torqued accurately.

Q5

Can I reuse the sealing washers on emissions sensor bolts?

It is generally recommended to replace sealing washers whenever you remove and reinstall an emissions sensor. Old washers may be deformed or not provide an adequate seal, which can lead to leaks. New sealing washers ensure a proper seal and prevent exhaust leaks or other problems.

Environmental Considerations

Temperature, humidity, and seasonal effects on torque specifications

Temperature Effects

Includes: High Heat, Cold Weather, Thermal Cycling

Temperature can significantly impact torque values and fastener behavior

Cold Weather

Effects:
  • Increased material brittleness
  • Higher torque required due to thread contraction
  • Reduced thread lubricant effectiveness
Recommendations:
  • Allow components to warm to room temperature when possible
  • Consider using winter-grade thread lubricants
  • Check torque values more frequently during winter months

Hot Weather

Effects:
  • Thermal expansion of components
  • Decreased friction in threads
  • Accelerated lubricant breakdown
Recommendations:
  • Check torque when components are at normal operating temperature
  • Use temperature-resistant thread lockers
  • Consider re-torquing after heat cycles

Humidity and Corrosion

Covers: Rust Prevention, Salt Exposure, Moisture Control

Moisture and corrosion can affect fastener integrity and torque values

High Humidity

Effects:
  • Accelerated corrosion formation
  • Reduced friction coefficient
  • Potential thread seizing
Prevention:
  • Use corrosion-resistant fasteners
  • Apply appropriate anti-seize compounds
  • Maintain proper protective coatings

Salt Exposure

Effects:
  • Rapid corrosion development
  • Thread damage
  • Seized fasteners
Prevention:
  • Regular underbody washing
  • Use of sacrificial anodes where appropriate
  • Application of protective coatings

Seasonal Maintenance

Spring, Summer, Fall, and Winter maintenance schedules

Spring

  • Inspect for winter damage
  • Clean and protect exposed fasteners
  • Check torque on critical components

Summer

  • Monitor heat-affected components
  • Check expansion-related loosening
  • Inspect cooling system mounts

Fall

  • Prepare for winter conditions
  • Apply corrosion protection
  • Verify all fasteners are properly torqued

Winter

  • More frequent inspection of critical fasteners
  • Check for salt damage
  • Monitor suspension component torque

Related Resources

Tools, service procedures, and technical bulletins

Recommended Tools

Torque Wrench (1/4" or 3/8" drive)

A calibrated torque wrench is essential for tightening bolts to the manufacturer's specified torque settings.

  • Accurate torque readings
  • Variety of torque ranges available
  • Click type or digital options
Learn more

Socket Set

A standard set of metric sockets will be needed to fit the various bolt heads on the emissions sensors.

  • Various sizes available
  • 6-point and 12-point options
  • Chrome vanadium construction
Learn more

Extensions and Swivels

Extensions and swivels may be required to access certain sensor bolts in tight or hard-to-reach areas.

  • Various lengths available
  • Different angles of rotation
  • Durable construction
Learn more
Service Procedures

Emissions Sensor Bolt Torque Specification Procedure

This procedure outlines the general steps for locating and torquing bolts on emissions sensors for a 2015-2017 Chrysler 200. Always consult the vehicle's specific service manual for exact locations and values.

  • Locate the specific emissions sensor(s) you are working with. Examples include: O2 sensors, MAP sensor, etc.
  • Identify the correct bolt(s) that secure the sensor to the engine or exhaust system.
  • Consult a reliable service manual (example: Haynes or Alldata) or database (example: Mitchell) to identify the correct torque specification for each individual bolt.
  • Using the appropriate socket and torque wrench, tighten the bolt(s) to the specified torque value, ensuring the wrench 'clicks' or the digital read-out indicates the set value.
  • If multiple bolts are present, use a star pattern when tightening them, to ensure even pressure on the component.
  • Verify that the sensor is securely mounted and no other bolts are missing or loose.
View full procedure
Technical Service Bulletins

Potential Over-Torquing of Emissions Sensor Bolts

2017-03-15

Some technicians have reported inadvertently over-torquing emissions sensor bolts during replacement, causing damage to the sensor housing or threads. This can lead to leaks or sensor failure.

2015-2017 Chrysler 200

Resolution: Always use a calibrated torque wrench and carefully consult the manufacturer's specified torque values for each specific sensor. Ensure to tighten all bolts to the correct specification during replacement. It is recommended to use a quality torque wrench that has been checked recently for calibration accuracy. If thread damage is suspected on the component or bolt, they should be replaced.

Recommended Torque Specification Database Lookup

2016-11-01

It has come to the attention of the service department that there is some confusion over finding the correct torque specifications for the emission sensors on the 2015-2017 chrysler 200. This bulletin highlights the importance of double checking the torque specifications before installing.

2015-2017 Chrysler 200

Resolution: We recommend looking the torque specifications up in a reputable service manual. Examples include Haynes, Alldata or Mitchell. Failure to tighten to correct specifications may result in component damage, premature failure or leaks.

About the Author

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Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

ASE Master Certified Technician with over a decade of hands-on experience in automotive repair and diagnostics.

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