Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2001 Mazda MPV ESFACTORY OEM SERVICE PROCEDURE
Main Control Valve Body Inspection: Specifications
MAIN CONTROL VALVE BODY SPRING SPECIFICATIONS
| Spring | Outer Diameter (mm {in}) | Free Length (mm {in}) | No. Of Coils | Wire Diameter (mm {in}) |
|---|---|---|---|---|
| Converter Relief Spring | 7.4 {0.29} | 32.3 {1.27} | 13.5 | 1.1 {0.043} |
| Solenoid Reducing Spring | 8.0 {0.31} | 39.7 {1.56} | 12.0 | 0.9 {0.03} |
| Low Reducing Spring | 8.7 {0.34} | 38.3 {1.51} | 12.5 | 0.9 {0.03} |
| 1-2 Shift Spring | 7.4 {0.29} | 36.6 {1.44} | 12.0 | 0.8 {0.031} |
| 2-3 Shift Spring | 7.4 {0.29} | 36.6 {1.44} | 12.0 | 0.8 {0.031} |
| Coast Timing Spring | 6.2 {0.24} | 28.0 {1.10} | 16.0 | 0.6 {0.02} |
| TCC Shift Spring | 6.0 {0.24} | 40.0 {1.57} | 13.8 | 0.5 {0.02} |
| 3-4 Shift Spring | 7.4 {0.29} | 36.6 {1.44} | 12.0 | 0.8 {0.031} |
| Pressure Modifier Spring | 5.0 {0.2} | 19.0 {0.75} | 12.7 | 0.6 {0.024} |
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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