A/C question
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From: Casper WY
A/C question
So I've had my truck (2006 5.4L 2wd 84k) since March and today was the first time I've really had to use the A/C. I was driving through the foothills south of town and I noticed the engine bogging down. I've driven this route before without a problem so I'm wondering if running the a/c really puts that much drag on the engine or if there is something else I should be looking in to.
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How hot was it? MAYBE the combination of AC and hot, thin air make a noticable difference in power. "Bogging down"--as in losing rpm, downshifting, unable to accelerate or hold speed? If so, you have another problem.
On a hot day with the AC, I can tell my brand x 4 cylinder is way down on power, but it will still accelerate and hold speed, for example.
On a hot day with the AC, I can tell my brand x 4 cylinder is way down on power, but it will still accelerate and hold speed, for example.
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From: Casper WY
Temp was about 95° and the elevation is about 5500 feet. As far as what it was doing maybe bogging down is the wrong term, I don't have a tach but the rpms were up and the truck was losing speed considerably on the climbs. Seemed like the engine would respond to the throttle but the truck lacked power.
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95 degrees, 5500 feet and the AC on is going to seriously cut the available power. Have you had it running in a lower, cooler, flatter area since? In your previous travels on this route, did you ever have the heat/ac combo before/ Or did you truck previously handle this without a problem?
Any CEL action?
Any CEL action?
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From: Casper WY
when we came back down into town (still about 5100 feet) we tried running with the windows open and no a/c and it seemed to be better. I haven't ran this area before with a/c because this is really the first really hot weekend for the area and usually its nice to run with the windows down up there and get some fresh mountain air. I imagine it probably was just due to all of those factors, I was just surprised by how much it cut into the power.
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I had an '83 or '84 Mazda B2000--bought it new. It had dealer installed AC, so there was a little button to push to turn the air on. I used to joke it was like downshifting the two speed rear axle in my dads old F600 when you pushed that button and turned the air off under load.
My current 4 cylinder isn't quite that anemic, but is affected by temps more than anything I can remember, other than my old PE250 dirt bike.
Well, all I can suggest is to do a few more "tests" and make sure your air cleaner is clean, and no dents, divots, pinches in the intake anywhere.
My current 4 cylinder isn't quite that anemic, but is affected by temps more than anything I can remember, other than my old PE250 dirt bike.
Well, all I can suggest is to do a few more "tests" and make sure your air cleaner is clean, and no dents, divots, pinches in the intake anywhere.
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