![]() ![]() If you remove the two bolts that hold the shroud onto the front clip, the shroud can be lifted up and over the fan to make more space to work in when it comes to removing the fan itself. The first step is to remove the clutch fan and the fan shroud. ![]() The next section shows how the installation went. It also weighed just 2lb so there was a useful weight saving over the clutch fan. At a little over 3" thick it was slim enough to mount to my XJ with plenty of clearance from the engine. It was a 14" high performance reversible electric fan that could be mounted in either pusher or puller mode and it cost a mere 50 bucks. I eventually found a fan in a local auto parts store. A Flex-a-lite #110 electric fan will fit, but it would have cost me close to 200 bucks including shipping. An electric fan assembly from another XJ is not slim enough. Pull in enough air to cool the engine.įinding a fan that fits within the confines of the engine bay with the 4.0 liter engine isn't easy. Be light and slim enough to clear the engine.ģ. The electric fan must have the following characteristics:ġ. An easy way to remedy these problems is to replace the clutch fan with an electric fan. Gas mileage is also reduced particularly in conditions where the clutch fan is most likely to engage i.e. ![]() This costs horsepower due to the engine driving the fan. The second is that when the clutch fan does engage, it makes a lot of noise and imposes a lot of drag on the engine (it weighs a hefty 5lb). Clearly the clutch fan isn't up to the job of keeping the engine cool enough by itself. The first is that when the engine is idling, the engine temperature reaches 220*F after a few minutes and the electric fan is triggered to switch on. There are two problems with the stock clutch fan. It switches off again either when the A/C is switched off or when the engine temperature has fallen back to 200*F (93*C). It is triggered by a relay either when the A/C is switched on or when the engine temperature reaches 220*F (105*C). The 11" diameter auxiliary fan is electric. When the engine is hot, the clutch engages and the fan spins at a speed proportional to engine speed and keeps the engine cool. When the engine is cold, the fan freewheels and has little cooling effect. The main fan is a 15" diameter viscous clutch fan that is mounted to an engine-driven pulley. Jeep 4.0 Dual Electric Fan Conversion Jeep 4.0 Dual Electric Fan ConversionĪ stock 4.0 Jeep Cherokee XJ engine has two cooling fans. ![]()
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