EGR Coolant Temp Override Switch Repair

Don't Let a Faulty EGR Switch Leave You Stranded

Is your check engine light on Experiencing rough idling or decreased fuel efficiency Your EGR Coolant Temperature Override Switch might be the culprit.

Why Choose Us:

  • Industry-leading 24-month/24,000-mile warranty
  • ASE-certified mechanics with specialized EGR system expertise
  • Service for ALL makes and models
  • Same-day service available

Don't wait for minor issues to become major problems!

Trusted by thousands of drivers in West Michigan for professional, reliable EGR system repairs

EGR Coolant Temperature Override Switch Repair Costs

Here's a breakdown of typical repair costs for EGR coolant temperature override switch services:

Basic Switch Replacement

Estimated Cost: $225-$300

  • Labor (1.5-2 hours @ $125/hour): $187.50-$250
  • Parts: $35-$50

Complex Switch Replacement

Estimated Cost: $375-$500

  • Labor (2.5-3 hours @ $125/hour): $312.50-$375
  • Parts: $60-$125
  • Includes additional diagnostic time and potential coolant system service

Full System Diagnosis and Repair

Estimated Cost: $500-$750

  • Labor (3-4 hours @ $125/hour): $375-$500
  • Parts: $125-$250
  • Includes comprehensive system testing, coolant flush, and related component inspection

Note: Prices may vary depending on vehicle make and model. Additional repairs may be necessary if related components are damaged.

EGR Coolant Temperature Override Switch Repair Procedures

Ford 7.3L Powerstroke (1994-2003)

Location:Located on the driver's side cylinder head near the EGR valve

Repair Steps:

  1. Allow engine to cool completely
  2. Drain coolant from the system until level is below the switch
  3. Disconnect the electrical connector from the switch
  4. Using a deep socket, carefully remove the old switch
  5. Clean the mounting surface thoroughly
  6. Install new switch with thread sealant
  7. Reconnect electrical connector
  8. Refill coolant system
  9. Start engine and check for leaks

Dodge 5.9L Cummins (1998.5-2002)

Location:Mounted on the thermostat housing

Repair Steps:

  1. Ensure engine is completely cool
  2. Partially drain cooling system
  3. Remove electrical connector
  4. Use appropriate wrench to remove switch
  5. Clean mounting surface
  6. Install new switch (torque to specifications)
  7. Reattach electrical connector
  8. Refill coolant
  9. Test system operation

GM 6.6L Duramax (2001-2004)

Location:Located on the passenger side of the engine near the EGR cooler

Repair Steps:

  1. Wait for engine to cool down completely
  2. Drain coolant to appropriate level
  3. Disconnect battery
  4. Remove electrical connector from switch
  5. Remove switch using correct size socket
  6. Clean threads and mounting surface
  7. Install new switch with proper torque
  8. Reconnect electrical connector
  9. Reconnect battery
  10. Refill coolant system
  11. Start engine and verify proper operation

General Notes:

  • Always use OEM or high-quality replacement parts
  • Ensure proper coolant mixture when refilling
  • Check for diagnostic trouble codes after repair
  • Consider replacing related gaskets while system is apart

Warning: These procedures should only be performed by qualified technicians. Improper installation can result in coolant leaks or system malfunction.

Understanding EGR Coolant Temperature Override Switches

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AnEGR Coolant Temperature Override Switchis a specialized component in a vehicle's Exhaust Gas Recirculation (EGR) system. Its primary function is to monitor and control the temperature of the engine coolant as it relates to EGR operation.

How It Works

The EGR Coolant Temperature Override Switch:

  • Monitors engine coolant temperature
  • Prevents EGR operation when the engine is cold
  • Enables EGR function only when proper operating temperature is reached
  • Helps maintain optimal engine performance and emissions control

Why It's Important

This switch plays acrucial rolein your vehicle's emission control system by:

  • Ensuring proper engine warm-up
  • Preventing poor engine performance during cold operation
  • Maintaining efficient emissions control
  • Protecting engine components from unnecessary wear

Signs of Failure

Common symptoms of a failing EGR Coolant Temperature Override Switch include:

  • Check Engine light illumination
  • Rough idle when cold
  • Increased emissions
  • Poor fuel economy

Regular maintenance and prompt replacement of faulty EGR Coolant Temperature Override Switches help ensure optimal vehicle performance and compliance with emissions standards.

Common Failure Symptoms: EGR Coolant Temperature Override Switch

EGR Coolant Temperature Override Switch: Signs of Failure & Maintenance Guide

Common Signs of EGR Coolant Temp Override Switch Failure:

  • Check Engine Light illumination
  • Engine running rough during warm-up
  • Increased emissions during engine warm-up period
  • Failed emissions test
  • Poor fuel economy
  • Irregular engine idle

Typical Service Schedule:

  • Inspection recommended every 60,000 miles
  • Testing of switch operation during routine emissions system checks
  • No specific replacement interval - replace only when failing or failed
  • Visual inspection of wiring and connections during regular maintenance

Preventative Maintenance Tips:

  • Keep cooling system properly maintained
  • Address any coolant leaks promptly
  • Ensure proper coolant concentration
  • Check electrical connections for corrosion during routine service

Note: Service intervals may vary based on vehicle make, model, and operating conditions. Always consult your vehicle's owner manual for specific maintenance schedules.

How It Works

  • Get a quote online or set-up a time to have your vehicle looked at.
  • Pick time slots that work for you, easily, online.
  • We will confirm appointments and send reminders.
  • Our mechanics bring everything that is needed to you.
  • All you have to do is provided a safe area for the work to be performed.

What we need from you

  • A safe place to work on your vehicle
  • No working on the side of busy roads
  • No working on unstable or steep surfaces.
  • We do not perform repairs during severe weather.
  • Authorization from a property owner or management.
  • Repair work done in a parking lot or at your  requires permission.
  • We do not do repairs in areas restricted by law.

Common Questions

Service Area

Our primary service area is greater Grand Rapids and includes Comstock Park, East Grand Rapids, Grandville,  Kentwood, Walker, and Wyoming

Our secondary service area is provided by our Belding location and includes: Belding, Greenville, Ionia and the sorrounding areas.

Contact us if you have any questions about where we provide services.

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