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Can I make this cool better?

Turbo on Tue June 10, 2008 3:03 PM User is offline

Year: 2004
Make: Jeep
Model: Grand Cherokee
Engine Size: 4.7
Refrigerant Type: 134a
Country of Origin: United States

Hello, I have a 2004 Jepp grand cherokee and it can from the factory with a Hydraullic cooling fan which is driven off the power steering pump. The power steering pump supplies high pressure fluid to the fan to spin it. The problem with this design is at idle it really does not move that much air. It does not spinn fast enough but if you give the jeep some gas , even in park, the engine spins fatser thus spinning the power steering pump faster and the fan becomes great and moves a lot of air. I live in the city and I get stuck in traffic all the time and I need good a/c when it is important such as stuck in traffic. How can i make this work any better? does anyone have any experience with this design? Thank You Sal.

94RX-7 on Tue June 10, 2008 3:51 PM User is offline

My Dodge Ram SRT-10 has a similar setup. My fan will move a fair bit of air at idle, but only if the computer tells it to.....and the computer is stingy as hell with the airflow. How much effort does your power steering require? You might have a bad P/S pump. If the pump seems OK, you'd be looking at adding an electric fan, or trying to find someone to reprogram the PCM to be less stingy.

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