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  #25  
Old 10-02-2014, 09:21 AM
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Re: Overheating?

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Originally Posted by Halfdeaf View Post
My biggest complaint is the 6-cyl diesel really doesn't give a lot of compression breaking.
No diesel has engine breaking unless its equipped with an active breaking apparatus such as a "Jake Brake". Its simply the nature of the beast.

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  #26  
Old 10-02-2014, 09:58 AM
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Re: Overheating?

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Originally Posted by netboy View Post
No diesel has engine breaking unless its equipped with an active breaking apparatus such as a "Jake Brake". Its simply the nature of the beast.
True but it can be said that all engines have some braking based on frictional and pumping losses. It is just significantly less in a diesel because there is no throttle plate to block the intake like on a gas engine. The vacuum from a closed throttle is the largest contributor to engine braking in a gasser...so it isn't compression braking, it's vacuum braking.
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  #27  
Old 10-02-2014, 01:17 PM
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Re: Overheating?

I believe the vario turbo closes it vanes to simulate engine braking on this engine.
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  #28  
Old 10-03-2014, 01:35 AM
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Re: Overheating?

Back to the overheating issue, I would like to see a more robust cooling system for this engine , as I bought the Jeep to be the TV for an eventual longer trailer.
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  #29  
Old 10-03-2014, 02:14 AM
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Re: Overheating?

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Originally Posted by netboy View Post
No diesel has engine breaking unless its equipped with an active breaking apparatus such as a "Jake Brake". Its simply the nature of the beast.

On't agree great engine braking
But you need to take out of drive and drop it back to first gear,
If you use the first gear and hill decent control i can't walk that slow down a hill its fantastic.
If you leave it in drive it will what all auto's do and drive off


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  #30  
Old 10-03-2014, 06:22 AM
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Re: Overheating?

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Originally Posted by fwdjeep View Post
If you use the first gear and hill decent control i can't walk that slow down a hill its fantastic.
From the JGC Owners Manual:
"HDC is intended for low speed off road driving while in 4WD Low Range. HDC maintains vehicle speed while descending hills during various driving situations. HDC controls vehicle speed by actively controlling the brakes."

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  #31  
Old 10-03-2014, 12:06 PM
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Re: Overheating?

Quote:
Originally Posted by netboy View Post
From the JGC Owners Manual:
"HDC is intended for low speed off road driving while in 4WD Low Range. HDC maintains vehicle speed while descending hills during various driving situations. HDC controls vehicle speed by actively controlling the brakes."

RTFM!
Not only are the brakes used, 4WD LOW amplifies what little engine braking we have.

A steep hill will over rev the motor if brakes aren't used, especially in high range. Its the nature of a diesel motor.
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