Maintenance

ARTICLES

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Understanding Common TPMS Problems

Proper Identification, Inspection & Service Are Required

Tire pressure monitoring system (generally referred to as TPMS or TPM) is relatively basic in terms of the number of involved components. But there can be hiccups. We walk through the steps, and also gather service tips from TPMS manufacturers.


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Spark Plug Tech

Interpreting Spark Plug Condition

The spark plug has a straightforward job to do. It’s responsible for igniting the air/fuel mixture in the engine’s combustion chamber initiating the power stroke. But this task is far from simple. The spark plug’s operating environment is extreme with combustion temperatures reaching 1500 F and peak cylinder pressure reaching 1,000 psi or more.


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Diagnosing Intermittent Drivability Issues

Strategies for Detection and Repairs

We as automotive technicians all get the intermittent problems or symptoms from a customer’s car that we know can take a lot of diagnostic time to duplicate the symptom and a lot of diagnostic tests. Even so, there are times in all of our encounters when we are forced to make a judgment call as to what component we may feel is causing the intermittent problem.


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Overview of a Modern Electronic Power Steering System

EPS Isn't New, But It Has More Capabilities

Electronic Power Steering (EPS) is now standard equipment on virtually all new models of vehicles sold. One reason is clear: it removes the parasitic drag of the constantly turning, belt-driven hydraulic pump used to supply the hydraulic force to move the steering mechanism.


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Keep TPMS Tools Updated for Accurate Relearns

Continental is launching a national public service campaign to make sure tire dealerships and service facilities are aware they need to keep TPMS tools updated so they can service all vehicle makes and models and ensure trouble-free and profitable tire services.


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Seal A/C Leaks With LeakFinder

Tracer Products offers LeakFinder LF200CS, an air conditioning sealant that permanently seals pinhole leaks in accumulator/receivers, evaporators, condensers, O-rings, hoses and more. The single-use syringe comes with an adapter to connect to either R-134a or R-1234yf systems.


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Understanding Individual Cylinder Fuel Control

We Break Down This Engine Management Strategy

If we go back to the early electronic fuel injection, (EFI) systems known as batch-fired injectors or what was called simultaneous EFI systems, the bank 1 injectors were all fired together. The next engine revolution resulted in the powertrain control module (PCM) group firing the injectors from bank 2. When an injector electrically lost its resistance value or had a problem called pintle distortion, it created a rich condition on that specific cylinder and bank.


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