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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
Diagnostic Solutions: Alternator Testing Tips
When we're attempting to diagnose a charging system failure, it helps to think of the battery's state of charge (SOC) as a type of checking account. If we overdraw our account, we wake up the next morning with an engine that won't crank. Or, if we overdraw our account and not balancing our account at the end of the day, we again are greeted with a slow-cranking engine and an overdrawn charging system account... More
Tech Tip: Window Lifts: Unappreciated When They Work
Sometimes, a window may quit working for one reason or another. It may be time to replace a regulator. More
Tech Tip: Ford Truck No-Start Following CKP Replacement
After replacing the Crankshaft Position Sensor (CKP) and/or connector to correct another problem, the engine turns over, but does not start. The fuel injectors pulse a couple of times when the engine starts cranking, then they stop pulsing. There is an rpm reading on the scan data for a split second, then it goes to zero. There is no spark. More
Tech Tip: Intermittent No-Start on Ford 5.4L V8 Truck Engine
When it won't start, there is no communication with the Powertrain Control Module (PCM). The theft light is flashing rapidly with codes U1147 and U1262 in the Hybrid Electronic Cluster (HEC). Also, the odometer just shows dashes with the key on instead of the actual mileage. More
Tech Tip: 2008-2009 Dodge Dakota Powertrain Control Module Removal and Installation
To prevent problems of DTCs and other items related to the VIN broadcast, it is recommended that you disconnect the ABS CAB (controller) temporarily when replacing the PCM. More
Can do CAN: A Simple Look at a Complex System
Ever wonder how your cable TV comes into your home on that single coaxial cable? In simple terms... it's like a CAN system. A good definition of a CAN system would be: High speed communication sent via data lines to and from components. More
Tech Tip: Chevy Malibu Starts and Stalls
With some Chevrolet Malibus (1997-1999 2.4L, 1997-2003 3.1L and 2004 2.2L and 3.5L engines), the vehicle will start and then stall. A scan tool should indicate a DTC P1626, P1630 or P1631 stored in the Powertrain Control Module (PCM). The flow chart for each code will direct a scan tool to be used to access BCM codes. This is the best way to perform diagnostics on this problem. 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
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