whooping noise and stutter, when driving uphill
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Joined: Sep 2012
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From: Canada
whooping noise and stutter, when driving uphill
Hi, yesterday i found out i had a screw in one of my tires. All tire repair shops were busy, so i stopped at walmart. They fixed it. When I started the truck, the 'check engine' light came on. Then while I was driving up a hill, the engine made a ''whoop whoop'' noise and started to stutter. The whole truck was vibrating, as if I was driving over a bunch of tiny speed bumps. Is that tc shudder? Or could it be something else? I stopped to check my trans fluid and noticed, that the dip stick had come out. I had to put some ATF4 in it, because it was half-empty. My truck is still vibrating and "whooping" everytime I drive up a hill. Should I get a motel room and have someone look at it tomorrow, or is it an easy fix? Thank you for your help.
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Joined: Sep 2006
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From: Elkton, MD
Hi Dizzle,
I take it you have a 6.7?
The torque converter shudder is a feeling like your going over rumble strips on the highway. Make no mistake you will know the feeling when it happens. I believe it's typically due to very low rpm in too high of a gear, this means there much less trans line pressure due to the low rpm causing less line pressure. This is why when it gears down it has a much harder time slipping as the rpm is higher. You might want to make sure the fluid is topped up and shift it manually when going uphill until you can have it looked at.
Another thing to keep in mind a great deal of these trucks have a two piece driveshaft, but, with or without that, a lot of what people may interpret as torque converter shudder, is actually the u - joints. Either due to changes in geometry because of a lift or due to a worn joint. The factory/OEM setup on the u-joints are not robust at all.
I take it you have a 6.7?
The torque converter shudder is a feeling like your going over rumble strips on the highway. Make no mistake you will know the feeling when it happens. I believe it's typically due to very low rpm in too high of a gear, this means there much less trans line pressure due to the low rpm causing less line pressure. This is why when it gears down it has a much harder time slipping as the rpm is higher. You might want to make sure the fluid is topped up and shift it manually when going uphill until you can have it looked at.
Another thing to keep in mind a great deal of these trucks have a two piece driveshaft, but, with or without that, a lot of what people may interpret as torque converter shudder, is actually the u - joints. Either due to changes in geometry because of a lift or due to a worn joint. The factory/OEM setup on the u-joints are not robust at all.
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Joined: Sep 2012
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From: Canada
I do have a 6.7. Sorry, I should have mentioned that.
It didn't feel, like I was going over rumble strips. It felt like I was being pulled back, whenever I went uphill. The truck was also vibrating, but not all the time and there was this weird "whoop whoop" noise.
I will have someone take a look at it next Monday. Tomorrow I'll check the u-joints and the fuel filter as well. Thanks for helping me out
It didn't feel, like I was going over rumble strips. It felt like I was being pulled back, whenever I went uphill. The truck was also vibrating, but not all the time and there was this weird "whoop whoop" noise.
I will have someone take a look at it next Monday. Tomorrow I'll check the u-joints and the fuel filter as well. Thanks for helping me out
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