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Tech Tip: BMW Check Engine Light On and Vehicle Running Rough Due to Airflow Meter
If a customer complains of a check engine light on and a vehicle running rough, it may be due to problems with the airflow meter and wiring. More
Tech Tip: Easy Fix for Mazda TPS Connection
Some Mazda B-2500 drivers may complain of a high idle in vehicles with a manual transmission. This may be caused by a poor electrical connection at the wire harness to the Throttle Position Sensor (TPS). A service kit (P/N 1F00-18-145) is available to resolve this concern. Correct the condition by following the steps in this Tech Tip. More
Tech Tip: Nissan Optical Distributor Test
Many Nissan vehicles have a power transistor controlling the coil (or igniter). The power transistor is a separate unit on optical distributors. It allows the signal sent from the ECU (low current) to activate the primary circuit in the ignition coil (higher current). This induces high voltage in the secondary windings of the coil, providing spark to the distributor cap and plugs. If this transistor... More
Tech Feature: Where Do You Start with Mercedes No-Start Diagnostics?
Hundreds of times a year, repair shops will get cars brought to them to repair a "No Start" fault. This article is going to discuss the process that it takes to make repairs when there are so many variables. Though this article will be focused on Mercedes-Benz, the steps can be used for any make or model. More
Nissan Tech Tip: Engine will Not Crank with Outside Temperature Below 10 Degrees
This TSB applies to Altima, Maxima, Quest, Murano, 350Z, Titan, Armada, Pathfinder, Xterra and Frontier models. More
Tech Feature: Breezing Through Ignition Off Draw Tests
One of the biggest differences in servicing the Sebring convertible from other Chrysler models was its battery location - behind the driver's side wheel well. More
Tech Tip: Cranky Honda Civic Starter is a Grind
A Honda Civic owner may complain that the starter motor intermittently grinds while cranking the engine. The cause may be that the female terminal at the starter solenoid may have spread apart, causing a loss of current to the solenoid. More
Tech Feature: Cooler 'Heads' Prevail - Pouring Over GM's LT1 Engine and Reverse-Flow Technology
The LT1 engine was used in a variety of General Motors models, including 1992-'96 Corvette (Y-body), 1993-'97 Camaro and Firebird (F-body), and 1994-'96 Chevy Caprice and Impala (B-body), Buick Roadmaster and Cadillac Fleetwood (D-body). More
Tech Tip: Servicing a Malfunctioning Automotive Ignition Switch
The automotive ignition switch, formerly a straightforward device used to connect battery voltage to various circuits and prevent theft of the vehicle, has recently been switched up. More
Tech Tip: Wintertime Heater Operation Guidelines
Wintertime heater operation presents numerous questions and problems. Here are some guidelines for professional technicians to ensure the heating efficiency of their customers' vehicles when the weather turns cold. Verify coolant level and condition. If the system is low, the heater core is the first to lose coolant flow, causing a lack of heat in the passenger compartment. Old coolant can cause ... More
 
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