4 Auto Issue

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Jeff-Ohio

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I hate reaching out and asking these questions, but I'm not sure if I have an issue with the 4 Auto on my 2017 Raptor or not. When you put your truck in 4 Auto and hit the gas, do you hear a swooshing noise, or something that sounds like "Shshshshshshshshshsh"? It isn't overly loud, but it is obviously drawing my attention. It goes away when I take my foot off the gas. I definitely do not hear the same noise while hitting the gas in to 2 High.
 
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Jeff-Ohio

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Probably not because it's not Shshshshshshshshshsh-ing in 2 high. :biggrin:

Thanks to both of you for trying to help. It is definitely not the turbos. I can only hear it while I'm hitting the gas in 4 Auto; no sounds in 2 High. It almost sounds like something needs to be lubricated?
 

hkguns

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Could it be Traction control kicking in and braking? Guessing only. Do you have a front Torsen?
 

smurfslayer

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would it come through on a video?

there is some extra NVH in 4x4, regardless of mode, but it sounds worthy of a warranty visit from your description.
 

JD06

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Could it be a vacuum line? I have heard other fords having a problem with Vac line leaks when trying to switch between 2H and 4A or 4H.
 

Ltl6pack

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Not sure how far you are away from your dealer, but I would recommend going in and let them ride with you and you let them hear it, and find/repair it. This kind of money you want it documented with them and it might be something to look at on all the trucks. What ever you find please let us know, Thanks
 
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Jeff-Ohio

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Not sure how far you are away from your dealer, but I would recommend going in and let them ride with you and you let them hear it, and find/repair it. This kind of money you want it documented with them and it might be something to look at on all the trucks. What ever you find please let us know, Thanks

Thanks to all for your help. I am dropping it off again tomorrow for a more serious issue (truck doesn't shift right and sort of surges while trying to maintain a steady speed), so I will have them look at the 4 Auto issue. Aside from loud clunks, I am guessing they will tell me the noise I am hearing in 4 Auto is normal, but I didn't hear it at all on a 2017 Limited that I drove with the 10-speed transmission. I will keep everybody posted on what I find out. They just had my truck for 8 days with respect to the surging issue and thought it was due to a bad spark plug in cylinder #6 (it threw a misfire code for cylinder 6), but that apparently wasn't the issue because I am still having the same problem. I love the truck, but just want it to run right.
 
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