Service and Cost
Relay Coil
Part Cost:$40
Labor Time:0.5 hours (0.5 × $125 = $62.50)
Estimated Total Repair Cost:$102.50
Relay Contacts
Part Cost:$20
Labor Time:0.5 hours (0.5 × $125 = $62.50)
Estimated Total Repair Cost:$82.50
Relay Housing
Part Cost:$15
Labor Time:0.25 hours (0.25 × $125 = $31.25)
Estimated Total Repair Cost:$46.25
Relay Wiring/Connector
Part Cost:$10
Labor Time:0.25 hours (0.25 × $125 = $31.25)
Estimated Total Repair Cost:$41.25
Relay Coil
1.Inspect the coil’s resistanceusing a multimeter to confirm it meets the manufacturer’s specifications.
2. If readings are out of range or the coil appears burnt,replace the relayto restore proper function.
3. Ensure all wiring connections leading to the coil aresecure and free of corrosion.
Relay Contacts
1.Visually check the contactsfor pitting, discoloration, or wear caused by electrical arcing.
2. If damage is minimal, use fine-grit sandpaper or a contact file tolightly clean the surfaces.
3. If contacts are heavily worn or burned,replace the relayto maintain reliable operation.
Relay Terminals
1.Inspect the terminalson both the relay and harness for signs of burning, corrosion, or loose fit.
2. Clean mild corrosion withelectrical contact cleanerand a small brush.
3. If terminals are bent or severely damaged,install replacement terminalsto ensure a solid connection.
Relay Housing
1.Check the outer casingfor cracks, breaks, or warping that may allow moisture or debris inside.
2. If the housing is compromised,replace the relayto prevent electrical failures.
3. Keep the surrounding area clean tominimize dust and dirtbuildup.
Mounting Bracket
1.Examine the bracketor mounting point on the vehicle for loose or missing hardware.
2.Tighten fastenersto ensure a secure mounting that supports the relay properly.
3. If the bracket is bent or rusted,replace or repair itto keep the relay firmly in place.

What is an Air Compressor Relay and what does it do
What is an Air Compressor Relay and What Does It Do
Anair compressor relayis an essential component in the operation of an air compressor system. It acts as a switch that controls the power supply to the compressor's motor. The relay is responsible for turning the compressor on and off based on the pressure levels within the system.
When the air pressure in the tank drops below a certain threshold, the relay activates the compressor motor to start compressing air. Conversely, when the desired pressure level is reached, the relay deactivates the motor, stopping the compression process. This automatic control helps maintain consistent air pressure, ensuring the efficient and safe operation of the air compressor.
In summary, the air compressor relay plays a crucial role in regulating the compressor's operation, contributing to the overall performance and longevity of the air compressor system.
Coil
Common Signs of Failure:
- Compressor not engaging when activated
- Burnt or charred appearance on the coil winding
- Unusual humming or buzzing noises
- Visible cracks in the insulation
Contacts
Common Signs of Failure:
- Pitting, corrosion, or discoloration on contact surfaces
- Excessive arcing or sparking during operation
- Burnt smell from overheated contacts
- Inconsistent power delivery causing the compressor to start and stop erratically
Armature
Common Signs of Failure:
- Visible bending, warping, or misalignment
- Failure to move smoothly when the relay is energized
- Metal fatigue or cracks on the pivot points
- Increased vibration or chatter within the relay
Return Spring
Common Signs of Failure:
- Spring not returning armature or contacts to starting position
- Decreased tension or visible deformation
- Armature remains stuck after de-energizing
- Frequent relay misfires or slow disconnection
Housing
Common Signs of Failure:
- Cracks or visible physical damage
- Signs of water or moisture intrusion
- Loose or missing mounting hardware
- Excessive dirt or debris buildup affecting relay components
Terminal Connectors
Common Signs of Failure:
- Loose or corroded terminals causing poor electrical contact
- Frayed or damaged wires near connector points
- Burn marks from overheating or short-circuiting
- Difficulty securing proper connection with incoming wires
Overload Protection (if present)
Common Signs of Failure:
- Frequent or continuous tripping despite normal operation
- Overly high temperature within relay housing
- Visible burn marks or melted components
- Air compressor failing to restart until relay cools down
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.