What is an advantage of an electric fan compared to a mechanically driven fan?
An electric fan completely removes the mechanical load of spinning the fan from the engine. It places an additional draw on the electrical system, but this is a more efficient means of spinning a fan, and it has a smaller impact on engine drag.
How much power does an engine fan use?
A single large mechanical fan is a slave to engine speed, and can consume as much as 40 horsepower from the engine using outdated technology.
How does the cooling fan work on a Jeep Cherokee?
Jeep Cherokee Electric Cooling Fan Diagnosis & Repair. When the air-conditioning is used the engine ECU grounds the A/C relay coil allowing current to flow through it. This activates the A/C relay which then supplies current to the A/C clutch, fan diode assembly and cooling fan relay.
What kind of engine does a Jeep Grand Cherokee have?
2001 Jeep Grand Cherokee 4.7 V8 Limited Quadra-Drive (aut. 4) (model up to mid-year 2001 for Europe ) car specifications & performance data review Specs datasheet with technical data and performance data plus an analysis of the direct market competition of Jeep Grand Cherokee 4.7 V8 Limited Quadra-Drive (aut.
How to check battery voltage in Jeep Cherokee?
Check for battery voltage at terminal 2 of the fan relay connector (Fig. 43). If battery voltage is not present replace the fan diode assembly. With engine running, A/C on, and fan relay removed, check for battery voltage at terminal 2 of fan relay connector (Fig. 43).
Is there a hydraulic radiator fan for a Grand Cherokee?
Hi all I have a 2001 Grand Cherokee Limited with the 4.7L engine 2wd if that matters. This one has the Hydraulic fan which blows me away. I spent a good deal of time trying to figure out where the relay was ands there is not one. Anyway my unit is running hot after idle for say 5-10 minutes. As soon as I start moving it cools down.
Jeep Cherokee Electric Cooling Fan Diagnosis & Repair. When the air-conditioning is used the engine ECU grounds the A/C relay coil allowing current to flow through it. This activates the A/C relay which then supplies current to the A/C clutch, fan diode assembly and cooling fan relay.
The Grand’s standard engine is a 4.0-liter inline six that produces 195 horsepower and 230 foot-pounds of torque. This aged powerplant provides disappointing acceleration and lacks refinement in terms of NVH control. Next step up is the optional 4.7-liter V8 with the new five-speed automatic transmission.
Check for battery voltage at terminal 2 of the fan relay connector (Fig. 43). If battery voltage is not present replace the fan diode assembly. With engine running, A/C on, and fan relay removed, check for battery voltage at terminal 2 of fan relay connector (Fig. 43).