Thermostatic Vacuum Sensor Repair Costs
Basic TVS Cleaning and Testing
A basic cleaning and diagnostic test typically takes 1-1.5 hours. This includes removal, cleaning, testing, and reinstallation.
Estimated Cost: $125-$187.50
TVS Diaphragm Replacement
Replacing a damaged diaphragm usually requires 2-2.5 hours of labor, including disassembly, replacement, and testing.
Estimated Cost: $250-$312.50
Complete TVS Rebuild
A full rebuild includes replacing all internal components and typically takes 3-4 hours.
Estimated Cost: $375-$500
TVS Valve Replacement
Replacing faulty valves requires approximately 1.5-2 hours of labor.
Estimated Cost: $187.50-$250
*Note: These prices reflect labor costs only. Additional parts and materials will be charged separately. Actual costs may vary depending on vehicle make and model.
Emergency TVS Repair
Emergency or after-hours repairs incur an additional service fee.
Standard rate plus 50% emergency fee
Thermostatic Vacuum Sensor (TVS) Repair Procedures
Mercedes-Benz W123 TVS
Common Symptoms:Rough idle, stalling, poor acceleration, and vacuum leaks
Repair Steps:
- Remove TVS from vehicle, typically located near the intake manifold
- Carefully disassemble the TVS housing, keeping track of all components
- Clean all internal components, especially the brass valve and spring
- Replace the internal rubber diaphragm with new OEM-quality material
- Inspect and clean vacuum ports
- Reassemble unit with new gaskets
- Test functionality before reinstallation
BMW E28/E24 TVS
Common Symptoms:Engine hesitation, poor cold-start performance, inconsistent idle
Repair Steps:
- Locate and remove TVS from engine compartment
- Split the housing carefully using appropriate tools
- Remove and replace bi-metallic strip
- Clean all vacuum passages thoroughly
- Replace all O-rings and seals
- Calibrate bi-metallic strip position
- Reassemble and pressure test
Porsche 911/928 TVS
Common Symptoms:Erratic idle, cold-start issues, poor warm-up performance
Repair Steps:
- Remove TVS from intake system
- Carefully separate the housing halves
- Clean or replace thermal element
- Replace vacuum diaphragm
- Clean all internal passages and check valves
- Install new gaskets and seals
- Reassemble and bench test before installation
Important Notes:
- All repairs should be performed in a clean environment
- Use only OEM-quality replacement parts
- Proper calibration is crucial for optimal performance
- Always pressure test before reinstallation
- Consider professional repair if unsure about procedure
Note: These procedures are general guidelines. Specific models may require additional or modified steps. Professional repair is recommended for optimal results.
Understanding Thermostatic Vacuum Sensors (TVS)

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Common Failure Symptoms of Thermostatic Vacuum Sensors (TVS)
Thermostatic Vacuum Sensor (TVS) Failure Signs & Maintenance Guide
Coolant Temperature Sensor TVS
Signs of Failure:
- Engine running rich or lean
- Poor fuel economy
- Rough idle or stalling
- Check Engine light illumination
- Inconsistent temperature readings
Service Schedule: Typically should be inspected every 60,000 miles or when experiencing temperature-related issues.
Transmission TVS
Signs of Failure:
- Delayed or harsh shifting
- Transmission slipping
- Erratic shift points
- Poor performance in specific temperature ranges
Service Schedule: Inspection recommended every 30,000-50,000 miles as part of regular transmission maintenance.
Distributor TVS
Signs of Failure:
- Engine misfiring
- Poor acceleration
- Unstable timing advance
- Decreased fuel efficiency
Service Schedule: Should be checked every 40,000 miles or when timing issues occur.
Carburetor TVS
Signs of Failure:
- Rough idle when cold
- Poor cold-start performance
- Inconsistent air-fuel mixture
- Stalling during warm-up
Service Schedule: Inspect during carburetor maintenance, typically every 30,000 miles or when performance issues arise.
Note: These are general guidelines. Specific service intervals may vary by vehicle make, model, and operating conditions. Always consult your vehicle's manual for manufacturer-recommended 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.