Diagnostic & Testing Tools
- Code Readers & Scanners
- Anti-Freeze & Coolant Testers
- Electrical Testers
- Timing Lights
- Fuel System Testers
- Ignition Testers
- Brake Testers & Measuring Tools
- Coating Thickness Gauges
- Oil Pressure Test Tools
- Engine Compression Testers
- Diagnostic Leak Detection
- Headlight Alignment Systems
- Suspension Testers
- Vehicle Scales
- Refrigerant Identifiers
- Window Tint Meters
- Exhaust System Testers
- Auto Inspection Cameras & Scopes
Featured Brands
- OTC®0 to 100 psi Master Fuel Injection Tester Kit (6550)0 to 100 psi Master Fuel Injection Tester Kit (6550) by OTC®. Also works on imports, including CIS and CISE fuel systems. With this new kit you can diagnose fuel-related problems, such as a weak fuel pump or restricted fuel filter, and...Designed for your fuel system maintenanceMade from quality materials to survive the test of time$559.63
- OTC®0 to 100 psi Stinger Basic Fuel Injection Tester Kit (4480)0 to 100 psi Stinger Basic Fuel Injection Tester Kit (4480) by OTC®. Performs running, residual, rail and flow rate pressure tests. This product is designed and manufactured to help you keep the fuel system of your vehicle in mint...Designed for your fuel system maintenanceMade from quality materials to survive the test of time$140.66
- OTC®Diesel Power Stroke Service Tool Kit (6770)Diesel Power Stroke Service Tool Kit by OTC®. The 6770 Ford 6.0L Diesel Service Tool Kit from OTC, bundles the affordable value of time saving tools with convenient storage. Vehicles with the 6.0L Diesel platform have an enduring duty...8 of popular 6.0L Diesel Service Tools in one convenient kitProperly test vehicle systems for leaks and blockage$320.24
- OTC®Fuel Injector Noid Light (7601)Fuel Injector Noid Light by OTC®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality at...Noid Lites are the fastest, easiest, most economical way to check electronic fuel injection signalsSimply disconnect the fuel injectors, plug the Noid Lite into the injector wiring harness, & crank the engine$26.98
- OTC®Fuel Injector Noid Light (7828)Fuel Injector Noid Light by OTC®. Proven test device to quickly determine if the electrical signal is present at the fuel injector. Simplest method for eliminating the EFI system or idle air control as possible faults on no-start...Noid Lites are the fastest, easiest, most economical way to check electronic fuel injection signalsSimply disconnect the fuel injectors, plug the Noid Lite into the injector wiring harness, & crank the engine$26.04
- OTC®Fuel Injector Noid Light (7602)Fuel Injector Noid Light by OTC®. Noid Lites are a proven test device to quickly determine if the electrical signal is present at the fuel injector. Just plug in and turn over the engine; flashing noid indicates good signal.Designed for your fuel system maintenanceMade from quality materials to survive the test of time$31.22
- OTC®High Pressure Oil Pump Adapters (6763)High Pressure Oil Pump Adapters by OTC®. Pair of pressure testing adapters for the high pressure oil pump which drives the injectors on the Ford 6.0L. This product is manufactured to help you maintain and service your oil system. It...Manufactured for your oil system maintenanceBuilt to enhance your productivity$42.71
- OTC®IPR Controller (6764)IPR Controller by OTC®. When a hard start or no start condition exists, the 6764 from OTC allows a technician to close the Injector Pressure Regulator in order to determine if proper injector control pressure is achieved and sustained...Tactile On/Off switch with LED confirming power to the tool and signal to the Injector Pressure RegulatorPermits a quick initial diagnosis of the pressure regulator when a hard start-no start situation exists$93.80
- OTC®M16 x P1.5 Silver Oil Pressure Adapter (7219)M16 x P1.5 Silver Oil Pressure Adapter (7219) by OTC®. This product is manufactured to help you maintain and service your oil system. It will make it easier to keep the oil pressure under control for smooth and safe operation of the...Allows for engine oil pressure to be measuredInstalls in place of oil filter providing ports to attach oil pressure tester$92.65
- OTC®Noid Light Kit (3054E)Noid Light Kit by OTC®. Simplest method for eliminating the EFI system or idle air control as possible faults on no-start vehicles. Disconnect the fuel injectors, plug in a Noid Lite, and crank the engine. A flashing light indicates...Designed for your fuel system maintenanceMade from quality materials to survive the test of time$80.04
- S&G Tool Aid®0 to 100 psi Fuel Injection Pressure Tester with Storage Case (33980)0 to 100 psi Fuel Injection Pressure Tester with Storage Case (33980) by S&G Tool Aid®. Test gasoline fuel pump pressure on most domestic and imported fuel injection equipped vehicles. This product is designed and manufactured to help...Test all Chrysler cars with Multi-port turbos and some TBIUse on most Ford TBI systems equipped with or without small Schrader test valve$149.51
- S&G Tool Aid®0 to 100 psi Multi-Port Fuel Injection Pressure Tester (36200)0 to 100 psi Multi-Port Fuel Injection Pressure Tester (36200) by S&G Tool Aid®. Test the fuel pressure on virtually all domestic and foreign vehicles equipped with multi-port fuel injection. Can also be used to test throttle body...Adapters for domestic, Asian and European vehicles equipped with standard Schrader test portAdapter for multi-port (EFI) and throttle body systems$184.13
- S&G Tool Aid®0 to 100 psi Multi-Port Fuel Injection Pressure Tester With Quick Coupler in Storage Case (56250)0 to 100 psi Multi-Port Fuel Injection Pressure Tester With Quick Coupler in Storage Case (56250) by S&G Tool Aid®. Tests the gasoline fuel pressure on virtually all domestic and foreign vehicles equipped with Multi-port fuel injection....Adapter for large Schrader valvesDesigned to help to get your job done right$160.85
- S&G Tool Aid®0 to 100 psi Multi-Port Fuel Injection Pressure Tester With Storage Case (36250)0 to 100 psi Multi-Port Fuel Injection Pressure Tester With Storage Case (36250) by S&G Tool Aid®. Test the fuel pressure on virtually all domestic and foreign vehicles equipped with multi-port fuel injection. Can also be used to test...Adapters for domestic, Asian and European vehicles equipped with standard Schrader test portAdapter for multi-port (EFI) and throttle body systems$124.34
- S&G Tool Aid®1 to 100 psi Fuel Injection Pressure Tester (33900)1 to 100 psi Fuel Injection Pressure Tester (33900) by S&G Tool Aid®. Test gasoline fuel pump pressure on most domestic and imported fuel injection equipped vehicles. Kit contains adapters to test all GM vehicles with Multi-port and...Test all Chrysler cars with Multi-port turbos and some TBIUse on older Ford TBI systems not equipped with small Schrader test valve$84.94
- S&G Tool Aid®13" Fuel Injection Tester Adapter (33850)13" Fuel Injection Tester Adapter (33850) by S&G Tool Aid®. This product is designed and manufactured to help you keep the fuel system of your vehicle in mint condition. It will make fuel system maintenance easier and more convenient,...For small Schrader valves found on Ford Multi-port (EFI)Threads onto hose found in Fuel Pressure Testing Kits$31.08
- S&G Tool Aid®Fuel Injection Pressure Tester Adapter (33785)Fuel Injection Pressure Tester Adapter (33785) by S&G Tool Aid®. This product is designed and manufactured to help you keep the fuel system of your vehicle in mint condition. It will make fuel system maintenance easier and more...Designed for your fuel system maintenanceMade from quality materials to survive the test of time$32.05
- S&G Tool Aid®Fuel Injection Pressure Tester Adapter with Quick Coupler (53785)Fuel Injection Pressure Tester Adapter with Quick Coupler (53785) by S&G Tool Aid®. This product is designed and manufactured to help you keep the fuel system of your vehicle in mint condition. It will make fuel system maintenance...Designed for your fuel system maintenanceMade from quality materials to survive the test of time$37.31
- S&G Tool Aid®Fuel Pressure Tester Adapter (37650)Fuel Pressure Tester Adapter (37650) by S&G Tool Aid®. This product is designed and manufactured to help you keep the fuel system of your vehicle in mint condition. It will make fuel system maintenance easier and more convenient, saving...Saves time during fuel injection pressure testing by replacing the fuel filter with female threads on both endsEliminates disconnecting the fuel line from the throttle body$42.28
- S&G Tool Aid®In-Line Recessed Spark Checker And Noid Set for Recessed Plugs, Noid Lights And Iac Test Lights Kit (36350)In-Line Recessed Spark Checker And Noid Set for Recessed Plugs, Noid Lights And Iac Test Lights Kit by S&G Tool Aid®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art...Use to test spark plug circuits, electronic fuel injection signals and idle air control circuitsQuickly diagnose "no start" and engine misses conditions in the electrical fuel injection and spark plug circuits$64.98
- S&G Tool Aid®Noid Light-IAC Test Light And Ignition Spark Tester Set (36330)Noid Light-IAC Test Light And Ignition Spark Tester Set by S&G Tool Aid®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...Use to test electronic fuel injection signals, idle air control circuit and spark plug circuits.Quickly diagnose "no start" and engine miss conditions in the electrical fuel injection and spark plug circuits.$47.07
- ACDelco®Medium Automatic Transmission Fluid Pressure Test Hole Seal (24274125)Medium Automatic Transmission Fluid Pressure Test Hole Seal (24274125) by ACDelco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It...Designed to help to get your job done rightManufactured utilizing the highest quality materials$4.42
- ATD®0 to 100 psi Fuel Injection Pressure Tester (5567)0 to 100 psi Fuel Injection Pressure Tester (5567) by ATD®. Basic fuel injection tester includes large and small Schrader adapters, M6-1.00 O-ring adapter and tee manifold. Includes everything needed to test the systems.Designed for your fuel system maintenanceMade from quality materials to survive the test of time$51.37
- ATD®0 to 150 psi Master Fuel Injection Pressure Tester Kit (5578)0 to 150 psi Master Fuel Injection Pressure Tester Kit (5578) by ATD®. This product is designed and manufactured to help you keep the fuel system of your vehicle in mint condition. It will make fuel system maintenance easier and more...Tests most fuel injection systems both foreign and domesticAll adapters, gauge and hose assemblies feature a quick coupling system for fast and efficient testing connection$466.89
- ATD®Noid Light Set (5612)Noid Light Set by ATD®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality at an...Designed to help to get your job done rightManufactured utilizing the highest quality materials$51.78
- Astro Pneumatic Tool®Deluxe Noid Light Signal Test Lights Set (7898)Deluxe Noid Light Signal Test Lights Set (7898) by Astro Pneumatic Tool®. This product is designed and manufactured to help you keep the fuel system of your vehicle in mint condition. It will make fuel system maintenance easier and more...The most economic way to check electronic fuel injection (EFI) signalsQuickly and easily checks for systems$20.78
- Equus®0 to 100 psi Professional Fuel Injection Pressure Tester Set (3640)0 to 100 psi Professional Fuel Injection Pressure Tester Set (3640) by Equus®. This product is designed and manufactured to help you keep the fuel system of your vehicle in mint condition. It will make fuel system maintenance easier and...Designed for your fuel system maintenanceMade from quality materials to survive the test of time$39.16
- Gates®Black Threaded Fuel Cap Tester Adapter (31456)Black Threaded Fuel Cap Tester Adapter (31456) by Gates®. Gates' Fuel Cap Tester can be made to be compatible with nearly any vehicle on the road with the correct adapter. This product is designed and manufactured to help you keep the...For use with Radiator & Fuel Cap TestersDesigned for your fuel system maintenance$21.85
- Gates®Orange and Gray Ring Fuel Cap Tester Adapter (31457)Orange and Gray Ring Fuel Cap Tester Adapter (31457) by Gates®. Gates' Fuel Cap Tester can be made to be compatible with nearly any vehicle on the road with the correct adapter. This product is designed and manufactured to help you keep...For use with Radiator & Fuel Cap TestersDesigned for your fuel system maintenance$35.21
- Gates®Pink Quick-On Fuel Cap Tester Adapter (31462)Pink Quick-On Fuel Cap Tester Adapter (31462) by Gates®. Gates' Fuel Cap Tester can be made to be compatible with nearly any vehicle on the road with the correct adapter. This product is designed and manufactured to help you keep the...For use with Radiator & Fuel Cap TestersDesigned for your fuel system maintenance$35.99
With today’s high-tech computer and electronics packed vehicles, electronic testers and diagnostic equipment have become the main weapons in the vehicle service arsenal, so we’ve stocked our digital shelves with scan tools, multimeters, analyzers and much more. When you’re armed with these electronic tools, you’ll be able to defeat any CHECK ENGINE light, blown fuse, balky window, recalcitrant alternator, or any other electrical malfunction with ease.
Electronic testers range from simple jumper wires, also called test leads, to sophisticated engine scan tools. Test leads allow you to bypass a circuit and directly test a component by applying 12 volts from the battery. Test lights, also called circuit testers, are essential tools for determining whether voltage is present at particular points in circuits. There are circuit powered and self-powered test lights, also known as continuity testers.
Test lights can tell you whether voltage is present, but they can’t tell you how much. For specific values you need a voltmeter, which is routinely packaged with an ohmmeter and ammeter in an electronic tester called a multimeter. There are analog meters that have a needle and a scale, but Digital Multi-Meters (DMM), also known as Digital Volt Ohm Meters (DVOM) are necessary for computer controlled circuits. Voltmeters can display the amount of voltage, such as when testing a battery or charging system, and test voltage drop. Ohmmeters measure resistance in a circuit and ammeters measure current flow.
A scan tool provides access to your vehicle’s computer control system via a cable connected to the Data Link Connector (DLC). With a scan tool you can read the Diagnostic Trouble Codes (DTCs) that cause CHECK ENGINE, Air Bag, and ABS dash lights to illuminate. Tool capability varies, and some can also read, record, and playback sensor data, display I/M monitor status, read and display freeze frame data, download to a PC, and be updated via USB port. In addition to erasing DTCs, some scan tools can also be used to reset oil lights and other warning lights.
Along with the above mentioned essentials, we also have many more diagnostic time savers including noid lights to check fuel injectors, current probes to measure current without disturbing the circuit, battery testers, infrared thermometers for instantaneous temperature indication, inspection cameras for peaks into the smallest places, and much more. And if you have an older, pre-computer controlled vehicle we have the tools you need to make adjustments and keep your vehicle running right, like timing lights to check initial timing and timing advance, and dwell/tachs to set breaker points and idle speed.