A car that clicks but won't crank usually has a battery or connection problem, not a failed starter. A car that cranks slowly or grinds may have a failing starter or damaged flywheel ring gear. For Mountlake Terrace drivers on the I-5 corridor and 236th commute routes, Tom's B&M Auto diagnoses starting system problems correctly — voltage drop tests, battery tests, and physical inspection — before replacing parts.
Voltage drop test across the starter circuit — battery positive to starter terminal, and battery negative to engine ground. High resistance in either circuit mimics a bad starter. Battery load test to rule out a weak battery.
Starter motor inspected: solenoid function, drive gear condition. Flywheel ring gear inspected for worn or broken teeth — replacing a starter against a damaged ring gear destroys the new unit. OEM-spec remanufactured starter installed.
Post-installation crank test and voltage drop retest. Most starter replacements completed same day, including difficult-access vehicles.
The most common misdiagnosis on a no-start: replacing the starter when the real problem is a corroded battery cable or a failed ground strap. A $15 cable repair vs a $200 starter replacement. We test the circuit before we replace the part.
For import vehicles — Toyota, Honda, Subaru, Nissan — we source starters from suppliers with OEM contracts. Generic rebuilt starters from discount suppliers use undersized brushes and weak solenoid springs that fail within 20,000 miles. We've seen it enough times to know the difference.
Voltage drop test rules out cables and grounds before replacing the starter.
Damaged ring gear teeth destroy a new starter immediately. We check before installing.
Most starter replacements completed same day including difficult-access vehicles.
Starter replacement includes voltage drop test across the starter circuit, battery load test, starter solenoid and drive gear inspection, flywheel ring gear inspection, OEM-spec remanufactured starter installation, and post-installation crank test.
From Tom's B&M Auto - serving Mountlake Terrace and the greater Seattle metro.
Tom's B&M Auto · 17820 Hwy 99, Suite E, Lynnwood · Serving greater Seattle
Also serving: Edmonds, Mountlake Terrace, Shoreline, Mukilteo, Kenmore, Alderwood Manor