No-Start Diagnosis in Kemah

No-start diagnosis means finding out why the engine won't run before anything gets replaced. A car that won't start can have a lot of causes. If it doesn't crank, it's often the battery, the starter or a connection. If it cranks but won't start, the engine is missing fuel, spark or a signal it needs, like the one from the crankshaft position sensor.

What a no-start can look like

• The engine cranks but never fires.
• You hear a click, or nothing at all, when you turn the key.
• It starts, then dies right away.
• It starts fine some days and not others.

How we diagnose it

We start with the battery and the charging system, then check the starter, fuel, spark and the sensors the engine computer depends on. A scan tool shows us what the computer sees while the engine cranks. You get photos and a clear estimate before any repair, and nothing is done until you approve it.

A Ford F-150 from League City came in recently that cranked but wouldn't start. We found excessive resistance in the crankshaft position sensor wiring and repaired it. The scan tool still showed no engine RPM signal while cranking, so we replaced the crankshaft position sensor and updated the engine computer's software.

Our ASE-certified technicians work on all makes and models, gas and diesel, and most repairs carry up to a 36 month, 36,000 mile nationwide warranty through TechNet.