Tranny Downshift Question

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Jan 16, 2008 | 08:55 PM

Citypol86

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Joined: Dec 2007

Posts: 325

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From: Lower Hudson Valley, N.Y.

Tranny Downshift Question

O.K., time for stupid question number 2... or is it 3? Tonight, on a road I normally travel at a higher speed, I was going downhill with the cruise locked on 54 MPH. Because of the hill, the truck started to pick up speed. Then, the tranny downshifted and, obviously, the rpm's went up.
I take it the tranny's supposed to do this for engine braking? I never had a truck this nice before. [Kinda makes me feel like I'm back in my Caddy when the truck does everything for me!] I just wanted to make sure it's supposed to do this.

Later...
Brewster...

P.S.: The truck's an '05 F250 SD XLT CC 5.4/5R110W

Jan 17, 2008 | 12:50 AM

biz4two

Lead Driver

Joined: Sep 2003

Posts: 5,844

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From: Albuquerque

That is totally normal. It is especially nice when you are in Tow/Haul mode with trailer pushing down the hill. Helps save the brakes for sure!

biz

Jan 17, 2008 | 05:53 AM

INF GUY

Junior User

Joined: Jun 2007

Posts: 57

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From: COPPERASCOVE,TX

Yup thats normal mine does it every morning i have a big hill on my way to wrk

Jan 17, 2008 | 09:10 AM

redford

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Joined: Sep 2000

Posts: 23,174

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From: Stephensville WI

Totally normal with the cruise control on, even when not in tow/haul mode.

This is one of the reasons you're not supposed to use cruise control when the road is slick.