Hard Downshift at about 20 MPH - Jeep Commander Forums: Jeep Commander Forum
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post #1 of 13 (permalink) Old 02-23-2011, 05:24 PM Thread Starter
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Hard Downshift at about 20 MPH

2006 Commander 5.7, 40k

I read a lot of threads for this problem. I notice that when I am slowing down, when I get to about 20 miles per hour my commander does a noticeable hard down shift. I read a lot of people have this issue, my wife's 2008 does not do this, but hers is a 3.7l.

Is this normal and I should stop worrying? Or is there a fix/TSB for this issue. I read on some posts people claim there is a TSB, but I could not find one for this issue and they did not post a number. The only one I saw was a TSB concerning a delay after sitting, but mine doesn't do that.

Thanks for any help.
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post #2 of 13 (permalink) Old 02-23-2011, 05:43 PM
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First things first, Do you have two commanders?


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post #3 of 13 (permalink) Old 02-23-2011, 05:48 PM
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Quote:
Originally Posted by SAL View Post
First things first, Do you have two commanders?
Looks to me like he has a 2006 Jeep Commander with the 5.7 HEMI and his wife has a 2008 Jeep Commander with 3.7 liter.




My Commander used to have that down shift all the time. It did it from the day of purchase until the day I lifted it with larger tires. Hasn't done it since. So for an easy fix.....spend $250 on a 2 inch spacer lift and some larger tires and you wont have to worry about the hard down shift. Not only that but your Commander will like awsome too!




2007 4.7 Liter XK | Front OME MD Springs w/Superlift Preload Spacer | Rear 4" Superlift Springs | Bilstein 5125 Rear Shocks | JBA UCA's | Rusty's Rear Adjustable Track Bar | Black Rock 997 Wheels | Fred Goeske 1/4 Inch Wheel Spacers | 305/70R17 Goodyear Wrangler MT/R w/Kevlar | Airflow Snorkel | Flowmaster 40 Series Muffler | Superchips Flashpaq | Mopar Skids | 4xGuard Belly Guard | American Rebel Rear Diff Cover | Rear Powertrax No-Slip | Front E-Locker | Rear Heat/AC Delete
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post #4 of 13 (permalink) Old 02-23-2011, 05:49 PM Thread Starter
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Yes 2008 3.7 and 2006 5.7, not really important. I noticed a good many people had this issue in old posts, and wondered what the final result was. Normal or needed fixed?
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post #5 of 13 (permalink) Old 02-23-2011, 05:51 PM
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Read my last post...I think we posted at the exact same time.

Thats how I fixed my hard down shift. haha




2007 4.7 Liter XK | Front OME MD Springs w/Superlift Preload Spacer | Rear 4" Superlift Springs | Bilstein 5125 Rear Shocks | JBA UCA's | Rusty's Rear Adjustable Track Bar | Black Rock 997 Wheels | Fred Goeske 1/4 Inch Wheel Spacers | 305/70R17 Goodyear Wrangler MT/R w/Kevlar | Airflow Snorkel | Flowmaster 40 Series Muffler | Superchips Flashpaq | Mopar Skids | 4xGuard Belly Guard | American Rebel Rear Diff Cover | Rear Powertrax No-Slip | Front E-Locker | Rear Heat/AC Delete
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post #6 of 13 (permalink) Old 02-23-2011, 05:55 PM Thread Starter
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Read my last post...I think we posted at the exact same time.

Thats how I fixed my hard down shift. haha
Yeah, I seen that fixed it for others, but it is not an option for me because it wouldn't fit in my garage then.
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post #7 of 13 (permalink) Old 02-23-2011, 06:00 PM
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Yes 2008 3.7 and 2006 5.7, not really important. I noticed a good many people had this issue in old posts, and wondered what the final result was. Normal or needed fixed?
No your wrong sir that was an important questions because thats just bad A**

Now I've read a few different fixes for this problem which I myself have this issue from time to time and I have the lift already so that won't help me. Have your trans reprogrammed or flashed as they might call it. Also have the trans service done or throw a lift on that solved the problem for 07JeepXK.


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post #8 of 13 (permalink) Old 02-23-2011, 06:03 PM
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Yeah, I seen that fixed it for others, but it is not an option for me because it wouldn't fit in my garage then.
Hmmmm. Is the top of your Commander really that close to hitting the top of garage door opening? Adding a lift and taller tires would only make you sit about 3 1/2 inches taller. Park your XK half way in the garage and see if a pop can will fit between the tallest part on your XK and the opening of the garage door. I thought mine was a tight fit until I tried this. I could easily clear a pop can and I have a 2 inch lift and 32 inch tires with normal size garage door. You would be surprised. Do you have roof rails?




2007 4.7 Liter XK | Front OME MD Springs w/Superlift Preload Spacer | Rear 4" Superlift Springs | Bilstein 5125 Rear Shocks | JBA UCA's | Rusty's Rear Adjustable Track Bar | Black Rock 997 Wheels | Fred Goeske 1/4 Inch Wheel Spacers | 305/70R17 Goodyear Wrangler MT/R w/Kevlar | Airflow Snorkel | Flowmaster 40 Series Muffler | Superchips Flashpaq | Mopar Skids | 4xGuard Belly Guard | American Rebel Rear Diff Cover | Rear Powertrax No-Slip | Front E-Locker | Rear Heat/AC Delete
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post #9 of 13 (permalink) Old 02-23-2011, 06:32 PM
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Quote:
Originally Posted by SAL View Post
No your wrong sir that was an important questions because thats just bad A**

Now I've read a few different fixes for this problem which I myself have this issue from time to time and I have the lift already so that won't help me. Have your trans reprogrammed or flashed as they might call it. Also have the trans service done or throw a lift on that solved the problem for 07JeepXK.

x2. Check fluid lvl as well.

Mods: 2007 Commander 4.7L, QTII, OEM Towing Option, front tow hooks, 2.25" lift, rusty's 1/4" leveling spacer, Bilstein 5150 Rear Shocks, rear swaybars disconnected, 4xguard front skid plate, mopar steel engine skid, Defender Roof Rack, 265/70/R17 BFG KM2 M/Ts 1.5" wheel spacers from rough country ($59.99) , Yaesu FTm350 70 cm, 2meter 220 50 watt mobile radio , 5db gain mag mount antenna, Hella 500FF lights.
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post #10 of 13 (permalink) Old 02-23-2011, 06:48 PM Thread Starter
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x2. Check fluid lvl as well.
That is the first thing I did, and it looks clean and there is no smell.
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