I've been towing with CRD for couple years now, but I'm starting to get a little squishy(compressing easier) and was thinking that it was time to stiffen up the rear end.

What do you guys recommend? Helper spring? New springs? Particular models/makers would be helpful.

Thanks in advance,
WWV

Maybe it's time to do a lift with new springs front and rear.

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2006 Black Jeep Liberty CRD Limited
K&N, Samco Hoses, Michelin 245/70-16 LTX A/T2, Fumoto F-102, V-Force Muffler, Mopar, Hitch, Trailer Wiring, Skid Plates, Slush Mats, Rear Shelf, Predator Stage 1, Transgo, ORM & CodeReader, Facet 40109 Pump
"IT'S A DIESEL THING, YOU WOULDN'T UNDERSTAND"
Certified Services Auto & Truck Repair

Okay Danoid, jsc7002, JeepJeepster all mentioned airbags
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?p=376764#376764

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2005 CRD
stuff
Skeptic quod gratis asseritur, gratis negatur

Here's a kit from Summit racing. I have a similar kit on my Tahoe, but mine mounts on top of the leaf springs. Anyway, it works the same, air them up when you need to tow, air down when done. I ran my air valve out back, drilled a small hole in license plate and bolted it there. I love mine, keeps the rear nice and level when heavy tongue weight and I don't need the weight distribution hitch. I just use a hose to do mine, but you can also get their onboard compressor and gauges to make it all in cab controlled.
http://store.summitracing.com/partdetail.asp?autofilter=1&part=AIR%2D60777&N=700+300083+115&autoview=sku

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'99 Tahoe, 3" BL, 285/75/16's , MT II's.
'05 Liberty Sport, -wifey's
'98 Poncho Fireturd, 3.8L, .....the purple pig!

Hmmmm, interesting....easy to install, inexpensive, adds stability ..................what's not to like?!?!

My brother was mentioning a helper spring, don't know much about those. I don't think he knew about these.


Thanks.

WWV

Helper springs will work, but usually they give you "an all the time stiff ride". The air bags are nice cause you can air them down when not in use and they won't affect the ride. You can also check into coil over shocks, but I have no personal experience with those, just seen them. Stay away from air shocks, they will tear up the mounts.

I put Sway control on my trailer and it works to get rid of the sloppy rear end feeling you are describing.
I like cheap fixes that work.

Also check the toe in of your trailer.

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2006 Pearl Green CRD
Magnaflow 2 1/2" Cat Back
KJ Extra Leg Room Brackets, Carter Lift Pump, V6 Airbox, ORM
Fuel cooler, Oil Separator, Progard 7
Gauges EGT Boost Trans Temp Oil Pres, Michelin LXT AT2 245 70 R16
7,000# Draw Tight hitch, PML EX Deep Trans Pan
Centrifuge, SunCoast, Transgo, RAM TCM, InMotion Stage 2
Wife's 99 TDI VW Beetle

I immediately noticed the rear wiggling under full go in first or second gear when towing, so did my wife. 'What the heck is that?" "That's torque honey, something the last Liberty didn't have."

I have a set of AirLift bags that fit inside the rear coils. If I pump em up to 35 psi the rear end lifts 2" and rides hard as a rock. I generally put them at 30 when towing, 10-15 unloaded.

I paid a guy at the Goodyear store $400 to install them after hours. They fill through a single schraeder valve he mounted in the back of the rectangular steel tube that's part of the hitch.

Wiggling fixed - back end is stable as a rock.

The load range E tires (Michelin XP Rib) add a huge amount of stability also. They may ride like bricks unloaded (but I'll take the extra fuel economy thank you) but under load they shine.

Two downfalls...

Lifting the rear pulls away from the weight distribution of an equalizing hitch, you end up with even more weight on the back. I have a set of load range D (for the winter) and load range E tires, and the axle is pretty much the same as the Durango, so I'm not real worried about that.

Even if I put them down to 5 psi (the min recommended) they are still pretty stiff in the winter, so I have to let air out of the rear tires so the overall ride doesn't feel like there's pogo sticks in the back. In the summer you don't notice them unless you pump them up.

Air bags are the way to go. Air shocks use the shock mounts to carry load, they aren't meant for that and stiffer springs are always stiffer.

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2005 CRD Limited Flame Red w/ Renegade rock rails & light bar, AirLift 1000. 225/75R16 MT/R's on cheap black steel wheels, dual MOPAR subwoofers, Ipod kit & seat covers, Samco hoses - totaled and gone. 2008 WK Laredo 3.0L diesel - AirLift 1000, wife won't let me mess with it much. 2013 JK Sahara on order.

you could also try a stinger hitch

http://stingerhitch.com/index.html

it's pretty mucha smaller scale piggy back system. I've talked to a couple of guys that use a fifth wheel piggy back and love it.

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formaly 2005 CRD sport w/True Flow air filter

currently 2006 Dodge Ram Mega Cab 4X4 2500 CTD