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11-18-2010, 08:35 AM
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#1
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Registered User
Join Date: Nov 2010
Location: Perth, Western Australia
Posts: 3
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I have a JK Unlimited CRD 6spd manual which I cannot reverse up my driveway without stalling or reversing so fast I cannot keep control of it. I have owned manual diesel and petrol 4WDs in the past and never had this problem even when reversing campers up the driveway. Driving up forwards is fine. The only way I have found to be successful is to ride the clutch which I have done once. I don't like the idea of an early clutch replacement so I won't be doing that again. Has anyone else had this challenge?
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11-18-2010, 08:44 AM
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#2
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Registered User
Join Date: Oct 2010
Posts: 2,560
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Hmmm..never really backed mine UP anything, I'll have to try it and see.... I have the same setup that you do....
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11-18-2010, 08:53 AM
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#3
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Registered User
Join Date: Aug 2007
Location: Ontario
Posts: 124
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In most traditional gear boxes the ratio for reverse is close to the second gear ratio. That means that it is easier to climb forward in first than to reverse on the same slope...I am not sure what axle ratio you have but a petrol JK with 3.21 takes a lot of clutch riding/coaxing just to start forward on a flat road, let alone reversing on a hill. Conversely, the crawling speed at idle in reverse is quite high, so even if the torque at idle is enough to keep you moving you still must ride the clutch. But then, this is a jeep and you can always use 4Lo
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11-18-2010, 09:25 AM
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#4
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Registered User
Join Date: May 2010
Location: Long Island, New York
Posts: 3,225
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you may want to turn off your Hill Start Assistant also for the reverse climb.
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11-18-2010, 09:30 AM
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#5
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Gold Member
Join Date: Feb 2007
Location: Lafayette, LA
Posts: 6,896
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You could always put in 4LO if you will be reversing in a straight line, that way you get it geared down a lot. Do not shift it into 4LO while reversing, but do it going forwards like normal, then after in 4LO, simply reverse.
__________________
2007 Black Unlimited Sahara, Black Hard Top, Khaki Soft Top, Khaki Interior, 3" Black Diamond Springs and sway bar links, Rancho Steering Stabilizer, Helo Black Maxx 6 17 X 9 wheels, Goodyear Duratrac 315/70-17 Tires, Poly Peformance High Steer Kit, Poly Performance Upper and Lower Front and Rear Adjustable Control Arms, Poly Performance Rear Track Bar Bracket, Poly Performance Chromoly Tie Rod, Offset Upper Ball Joints, Mopar Front and Rear Bumpers and Skid Plate, Warn 9.5ti winch, ARB High Output Compressor with tire inflation kit, PIAA 510 SMR Fog Lights , Silverstar Headlights, Front Rancho 9000 shocks, Rear Bilstein 5100 series shocks, 5.13 gears, Kenwood DNX9990HD, Infinity 6020CS, Infinity 6022si, Alpine MRP-F250, JBL P1024, Alpine MRP-M650
Last edited by Prot; 11-18-2010 at 09:31 AM..
Reason: clarification
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11-18-2010, 12:33 PM
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#6
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Plasti Dip yourself!
Join Date: Mar 2009
Location: 6,000 ft, Colorado
Posts: 3,705
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Not trying to be a smart ***, but have you tried using the brakes? It seems with the clutch out you could use braking to keep it slow enough.
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11-18-2010, 12:48 PM
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#7
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Registered User
Join Date: May 2009
Location: harmony NC
Posts: 347
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mmmmmmmmm CRD.................................... I'm sorry what were we talking about?
__________________
2010 Rubicon 2dr
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11-18-2010, 12:54 PM
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#8
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Registered User
Join Date: Jul 2009
Location: pelham ny
Posts: 258
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Quote:
Originally Posted by JkFuriousd
mmmmmmmmm CRD.................................... I'm sorry what were we talking about?
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The version of the jk jeeps sells over seas/ borders
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11-18-2010, 12:54 PM
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#9
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Registered User
Join Date: Jul 2009
Location: pelham ny
Posts: 258
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pretty sure just bumpers are different.. maybe fenders
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11-18-2010, 03:04 PM
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#10
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Registered User
Join Date: Nov 2007
Location: Gainesville, GA
Posts: 212
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Reverse gear was a pain in the @$$ to me, even in a 2dr with 3.73 gears and small tires (28").
Maybe this tip will work for you, it did for me.
First, as Vin suggested, I turned off the Hill Start Assist.
Second, I went to a level parking lot and practiced gently letting in the clutch using 0 gas pedal (that is not even touching the accelerator pedal), first in 1st gear, then in reverse gear. (Prior to an '06 TJ and now a '10 JK, I never had a standard transmission that would maintain idle speed on level ground, much less going uphill!)
However, my JK will maintain idle speed in reverse uphill - though slower than on level ground. Motor Car states he has a problem with this, so I suspect there may be a variation in vehicles, though the lower your final gear ratio, the better off you are (how true is that?).
Third step was to practice letting in the clutch on a slight slope, then immediately entering an uphill slope - with 0 gas pedal. For me it was pulling in off the street, then starting at the foot and going up my concrete driveway (almost 2:1 in places) at idle speed in 1st gear, then in reverse gear - with no application of accelerator pedal. In reverse gear, as soon as I hit the steeper uphill slope, the idle speed immediately slows down to a crawl. The steeper the slope, it seems, the slower the crawl, but I haven't stalled out, yet. The idle seems to be self adjusting - mindboggling to a guy who learned to shift on a three speed Chevy tree w/o synchro. Can you say carburetor? 
Downhill in either 1st or reverse it starts bucking. Obviously neutral is the solution there.
Don't try this with a hip hop station on 28+ volume, it can't be done. Also always remember, especially in the woods, to look at everything behind you on both sides of the vehicle before you back up (that may sound obvious to you but I conducted an expensive impact study with a pin oak in the TJ  )
Should I "get a life"? Maybe, but I can't think of anything more fun than just messing around with my jeep or my boat, and it is too cold for boats in November, even in Georgia. Well maybe something...
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11-18-2010, 05:03 PM
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#11
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Registered User
Join Date: Oct 2008
Location: Ottawa, ON
Posts: 74
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How do you turn off Hill Start Assist?
__________________
Blackhawk I : 2008 Wrangler Unlimited 6-speed, AEV 3.5". SuperChips Programmer. Rugged Ridge Front Bumper. Rigged Ridge Rear Bumper. 35" MTZ on MT Sidebiters
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11-18-2010, 05:31 PM
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#12
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Registered User
Join Date: Nov 2007
Location: Gainesville, GA
Posts: 212
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Quote:
Originally Posted by Gregger
How do you turn off Hill Start Assist?
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It is explained in the owner's manual: https://www.jeep.com/hostb/crossbrand/owners/en/
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11-18-2010, 06:35 PM
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#13
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Registered User
Join Date: Oct 2008
Location: Ottawa, ON
Posts: 74
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 Oh, you guys and your new JKs. Sheesh.
__________________
Blackhawk I : 2008 Wrangler Unlimited 6-speed, AEV 3.5". SuperChips Programmer. Rugged Ridge Front Bumper. Rigged Ridge Rear Bumper. 35" MTZ on MT Sidebiters
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11-19-2010, 08:04 AM
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#14
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Registered User
Join Date: Nov 2010
Location: Perth, Western Australia
Posts: 3
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Thanks for all of the feedback. I have tried 4LO but the driveway is an S bend and although it worked well it is not good for the trans on a rough concrete driveway with no slip. I will try disengaging the hill start assist and see if that helps. As far as using brakes goes it doesn't help. I need to be almost loosing traction to prevent it from stalling so braking doesn't help. I will also try the zero throttle solution from the bottom of the drive. I will let you know how all of this goes. Hopefully there is a solution in there somewhere!
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11-19-2010, 05:38 PM
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#15
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In like Flynn.
Join Date: Dec 2008
Location: Little Lamplight
Posts: 1,682
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Do you really need to back in? That's really what it boils down to if nothing else works.
__________________
2008 JK Rubicon
1998 TJ Sahara Sold
1994 YJ SE Sold
1960 Willys Wagon
"I would rather wake up in the middle of nowhere than in any city on earth."
-Steve McQueen
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>
Stall Reversing Uphill
