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2008 Ram 1500 A/C Question

Old 07-14-2017, 10:08 AM
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Default 2008 Ram 1500 A/C Question

Blows cold going down the road. Absolutely nothing at a stop sign or red-light, even if the motor is revved up.

Hooked up a gauge to the low pressure side. When the compressor is running, it is between 30-40 psi. Jumps to 140+ when resting. Any thoughts on what the issue may be?

Definitely going to take it to a reputable shop. Just making sure I'm not missing anything obvious.

All input appreciated.
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Old 07-14-2017, 10:21 AM
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Originally Posted by autobaun70 View Post
Blows cold going down the road. Absolutely nothing at a stop sign or red-light, even if the motor is revved up.

Hooked up a gauge to the low pressure side. When the compressor is running, it is between 30-40 psi. Jumps to 140+ when resting. Any thoughts on what the issue may be?

Definitely going to take it to a reputable shop. Just making sure I'm not missing anything obvious.

All input appreciated.
Fan....... located on the drivers side of radiator
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Old 07-14-2017, 10:53 AM
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Originally Posted by bluffman2 View Post
Fan....... located on the drivers side of radiator
Think that's it. Any clue what fuse controls it? I see nothing in the fuse listing at all in the manual.
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Old 07-14-2017, 10:56 AM
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Fan clutch if it has one. See if you're getting power to it with AC turned on. Try tapping on motor first. Then start tracking down fuses and relays. Don't loose a finger.
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Old 07-14-2017, 11:04 AM
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Originally Posted by autobaun70 View Post
Think that's it. Any clue what fuse controls it? I see nothing in the fuse listing at all in the manual.
no clue at all.....
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Old 07-14-2017, 11:13 AM
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Looked up the diagram. Looks like it goes from battery to fan control module with no fuse. Fan control module comes with fan. edit- Power comes from integrated power module that is separate from fan.
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Old 07-14-2017, 11:23 AM
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Totally Integrated power module should be the one on the fan.
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Old 07-14-2017, 11:26 AM
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Edit- The Integrated power module is not the fan module. My mistake, here is the diagram.
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Old 07-14-2017, 11:27 AM
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Thanks all. Looks like a new fan is in my future. Under 100 bucks so no complaints. Looks fairly simple to change out to boot
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