Symptoms
- Wrench clicks noticeably earlier or later than expected
- Fasteners feel too loose or too tight compared to spec
- Wrench was dropped or stored at a set torque value
- Clicking sensation feels weak, mushy, or inconsistent
Likely causes
- CommonWrench stored with tension left on the spring (dial set above zero)Leaving a clicker-type wrench loaded for long periods can weaken the internal spring's calibration over time.
- CommonWrench dropped or handled roughlyImpact can throw off the internal calibration mechanism.
- PossibleMisreading the scale (mixing up units like ft-lbs and in-lbs, or misreading the vernier)Incorrect reading of the dial is a common user error, not a tool fault.
- PossibleWrench simply due for recalibrationEven well-maintained torque wrenches drift out of spec over time and need periodic checking.
What to do
- Double check that you're reading the correct scale and units on the dial before assuming the tool is at fault.
- After each use, back the setting down to the lowest value on the scale before storing a clicker-type wrench.
- Inspect the wrench for signs of being dropped or damaged, which can affect accuracy even if it still clicks.
- Test the wrench against a known reference if available, such as a calibration checker or a second torque wrench, to compare readings.
- If the wrench is used professionally or for critical fasteners, send it to a calibration service periodically as recommended by the manufacturer.
- Replace the wrench if it's a low-cost model that's been dropped or stored improperly for a long time, since some aren't cost-effective to recalibrate.
- Going forward, store it in its case at the lowest setting and avoid using it as a breaker bar, which stresses the calibration mechanism.
Tools and parts
- Torque wrench
- Calibration reference (if available)
Replacement torque wrenchSearch: “click type torque wrench”
When to call a pro
For critical automotive or structural fasteners (like wheel lugs or engine components), have the torque wrench professionally calibrated or use one from a shop known to maintain calibration.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.