Tag Archives: Cooling System

2003 Ford Focus Duratec RS Engine Cooling System Wiring Diagrams

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An efficient cooling system is essential in maintaining the engine’s performance under all operating conditions. Although the complete system will depend upon the individual installation, it is vital that the water pump and thermostat are working as designed. The following schematic illustrates the 2003 Ford Focus Duratec RS Engine Cooling… Read more »

2002 Jeep WG Grand Cherokee 4.7L Radiator Fan Schematic Diagram

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The hydraulic fan (below picture) used on 2002 Jeep WG Grand Cherokee 4.7L replaces both  the electric fan and the engine driven mechanical fan. The hydraulic cooling fan is integral to the fan shroud and is located between the radiator and the engine. The power steering pump supplies the hydraulic… Read more »

Volvo 960 850 Engine Cooling Fan Circuit and Schematic Diagram (1994)

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These engine cooling fan circuits and schematic diagrams apply for 1994 Volvo 850 and 960 series. The engine cooling fan system consists of engine cooling fan motor, engine cooling fan relay, A/C pressure sensor (located behind right headlamp), fusible link, starter motor, battery, control module motronic and air conditioning system…. Read more »

1991 Hyundai Sonata Cooling System – Schematics and Troubleshooting

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The Hyundai Sonata is a mid-size sedan manufactured and marketed globally by Hyundai Motor Company since its introduction with model year 1988. The 1991 Sonata is equipped with 1.8 L 134 PS, 2.0 L 149 PS, 2.4 L 149 hp (111 kW) Hyundai Sirius I4s and an impressive 2.5 L… Read more »

SiC Bipolar Junction Transistors for Improving Hybrid Car Cooling System

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Since Silicon Carbide (SiC) transistors can stand on higher temperatures, it is possible to use those devices into the standard internal combustion engine (ICE) water cooling system of a hybrid car which needs to be separated from the main cooling system. The article below shows that SiC bipolar junction transistors… Read more »