Test & Diagnostic

Car diagnostic tools from JC Whitney make it easy to diagnose and repair engine, ignition and mechanical automotive problems yourself. Perform state of charge, battery load, starter and charging system tests on your car with battery load testers. Looking out for the easiest way to troubleshoot your car? Choose computer car code reader and scanners from our collection and pinpoint your car’s engine problems immediately, read latest codes from your car’s computer and make your own repairs. Glance through our selection of diagnostic tools that include circuit testers, short circuit finders, spark plug testers, fluid leak detector systems and more.

Our collection of ignition diagnostic tools include mini circuit testers that help locate hot circuits quickly, volt analyzers that check electronic ignition and charging/starter systems, timing advance analyzers that accurately check basic ignition timing, vacuum advance, centrifugal advance and computer advance. Spot many common mechanical/electrical car problems easily and accurately with infrared thermometers and indoor/outdoor thermometers from our collection. Pick these testing and diagnostic tools from superior brands like Actron® scanners, Actron® code readers and Innova®.