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Old 07-09-2011, 02:56 AM
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HEARING REVS WHILE TOWING

Kinda new to the forum but been here lurking for a while. I have a 2005 F250 6.0 and sometimes while towing I hear what sounds like the engine reving up. It is not the engine as I don't see the tach reving. It has done this a few times lately and once without towing anything. Truck is bone stock and has 72k miles. I am in the process of figuring out what up grades to do. There were a couple of posts of people that had the same issue but doing a search I couldn't find them. Thought it could have been a fan clutch. Engine temps and trans are normal, well as normal as the idiot gauges would read. Any help would be greatly appreciated. Thanks
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Old 07-09-2011, 03:25 AM
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Fan turning on
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Old 07-09-2011, 04:13 AM
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Quote:
Originally Posted by MrFL54 View Post
Kinda new to the forum but been here lurking for a while. I have a 2005 F250 6.0 and sometimes while towing I hear what sounds like the engine reving up. It is not the engine as I don't see the tach reving. It has done this a few times lately and once without towing anything. Truck is bone stock and has 72k miles. I am in the process of figuring out what up grades to do. There were a couple of posts of people that had the same issue but doing a search I couldn't find them. Thought it could have been a fan clutch. Engine temps and trans are normal, well as normal as the idiot gauges would read. Any help would be greatly appreciated. Thanks
Like mentioned in post #2, that noise is your fan coming on. It is controlled my the PCM and it isn't like the fan you would see on a gas engine. When it comes on, it roars and could be mistaken as sounding like your engine is revving. Nothing to be concerned about, its normal.
As far as looking at "things to do" you should click on the link in my signature "basic info" that will bring you to a thread on a different forum. Post #2 is full of information about what every 6.0 liter owner should be aware of.
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Old 07-09-2011, 10:35 PM
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I lived in Alaska when i bought my truck brand new and the fan did not come on till the second year i owned it. When it did, i pulled over and thought it was exploding! It is loud! Now i live and tow out of Vegas and the fan is a part of life! it is still very loud!
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Old 07-10-2011, 01:07 AM
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Thanks for the response guys. Yes it is quite loud and didn't know what to make of it. Is there any certain time it would come on or is it a random thing?. NYC F-350 looked at you link and a lot of good info there. The mods I want to start with first is getting better mpg. From there we will see. I have ordered the Edge Insight and will install that to moniter specifics. Great sight with tons of great info. Thanks again!!
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Old 07-10-2011, 09:04 AM
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Quote:
Originally Posted by MrFL54 View Post
Thanks for the response guys. Yes it is quite loud and didn't know what to make of it. Is there any certain time it would come on or is it a random thing?. NYC F-350 looked at you link and a lot of good info there. The mods I want to start with first is getting better mpg. From there we will see. I have ordered the Edge Insight and will install that to moniter specifics. Great sight with tons of great info. Thanks again!!
What you make of it is that the fun comes on when the engine needs cooling, and its loud when it engages. Comes on when it needs to
Don't over think it, its there for a reason..
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