4008 N Ravenswood Ave, Chicago, IL 60613

Electric Motor Repair & Diagnostics

Professional motor rebuild • Performance optimization • Efficiency restoration

Expert Electric Motor Services

Electric motors are the heart of your EV's propulsion system. Our certified technicians specialize in diagnosing, repairing, and optimizing electric motors for all major brands including Tesla, BMW, Nissan, and more.

From bearing replacements to complete motor rebuilds, we provide comprehensive electric motor services using OEM parts and advanced diagnostic equipment to restore your EV's performance and efficiency.

⚠️ Signs Your Electric Motor Needs Service:

  • • Unusual noises or vibrations
  • • Reduced acceleration or power
  • • Motor overheating warnings
  • • Efficiency loss or increased energy consumption
  • • Motor fault codes or error messages

Motor Service Pricing

Motor DiagnosticsStarting at $249.99
Bearing Replacement$899.99
Rotor Repair/Balance$1,299.99
Stator Rewinding$2,499.99
Complete Motor RebuildFrom $3,999.99

Performance Upgrade: Optimize motor efficiency by up to 15%!

Complete Electric Motor Services

From diagnostics to complete motor replacement

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Motor Diagnostics

Comprehensive testing of motor performance, efficiency, and electrical characteristics

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Bearing Service

Precision bearing replacement and lubrication for smooth, quiet operation

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Rotor Balancing

Dynamic balancing to eliminate vibrations and extend motor life

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Magnet Inspection

Permanent magnet condition assessment and replacement when needed

Stator Rewinding

Professional stator coil replacement and rewinding services

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Thermal Management

Cooling system inspection and thermal protection optimization

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Efficiency Testing

Motor efficiency measurement and performance optimization

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Controller Integration

Motor controller calibration and integration testing

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Insulation Testing

Electrical insulation integrity testing and certification

Motor Types We Service

Permanent Magnet Synchronous Motors (PMSM)

Common Vehicles:

  • Tesla Model S/X
  • BMW i3/i8
  • Nissan Leaf
Max Power:Up to 500kW
Efficiency:95-97%

Key Features:

  • High efficiency
  • Compact design
  • Excellent torque

AC Induction Motors

Common Vehicles:

  • Tesla Model 3/Y (rear)
  • GM Bolt
  • Ford Focus Electric
Max Power:Up to 300kW
Efficiency:92-95%

Key Features:

  • Robust design
  • Lower cost
  • Regenerative braking

Switched Reluctance Motors (SRM)

Common Vehicles:

  • Some BMW models
  • Industrial applications
Max Power:Up to 200kW
Efficiency:88-92%

Key Features:

  • Simple construction
  • Fault tolerant
  • Wide speed range

Case Study: BMW i3 Motor Optimization

Performance restoration and efficiency improvement

Before Service

Motor Efficiency:84% (below spec)
Power Output:125kW (reduced)
Noise Level:68 dB (excessive)
Vibration:High amplitude

Customer Issues:

  • • Noticeable vibration at highway speeds
  • • Reduced acceleration performance
  • • Motor overheating warnings
  • • Increased energy consumption

After Service

Motor Efficiency:96% (optimized)
Power Output:170kW (restored)
Noise Level:52 dB (whisper quiet)
Vibration:Minimal

Services Performed:

  • • Bearing replacement with ceramic bearings
  • • Rotor dynamic balancing
  • • Stator insulation renewal
  • • Cooling system optimization
  • • Motor controller calibration

State-of-the-Art Motor Testing Equipment

Diagnostic Equipment

  • 🔧Motor efficiency analyzers
  • 🔧Vibration analysis equipment
  • 🔧Dynamic balancing machines
  • 🔧Thermal imaging cameras
  • 🔧Insulation resistance testers
  • 🔧Motor current signature analyzers

Repair Capabilities

  • Clean room for bearing replacement
  • Stator rewinding stations
  • Rotor reconditioning equipment
  • Magnet handling and replacement tools
  • Precision machining capabilities
  • Environmental test chambers

Electric Motor Service FAQ

How long do electric motors typically last?

EV motors are designed to last 300,000-500,000 miles with proper maintenance. Regular service can extend this significantly.

What causes electric motor failure?

Common causes include bearing wear, rotor imbalance, insulation degradation, overheating, and contamination. Most failures are preventable with regular maintenance.

Can you repair any brand of electric motor?

Yes, we service all major EV brands including Tesla, BMW, Nissan, Chevrolet, Ford, Audi, and more. Our technicians are trained on all motor types.

How much does motor replacement cost?

Motor replacement varies by vehicle: Tesla Model 3/Y: $4,000-$6,000, BMW i3: $8,000-$10,000. We often can repair instead of replace, saving thousands.

Do you offer motor performance upgrades?

Yes, we can optimize motor efficiency, reduce noise and vibration, and in some cases increase power output within safe parameters.

Schedule Your Motor Service

Expert electric motor diagnostics, repair, and performance optimization

Request Electric Motor Repair & Diagnostics

Booking requests are now handled on our Contact page.

Reach out and our team will confirm your appointment quickly.

Prefer email? Write us at contact@jandaauto.repair

Restore Your EV's Power & Performance

Expert electric motor diagnostics and repair services

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