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Old 03-20-2016, 10:45 AM
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Rancho 9000's - Possible bad Shock ?

Ok, so I maybe figured out why my jeep has drove so poorly since installing my lift back in October - A bad right front Rancho 9000 shock--maybe ???

This is my 3rd JKU - Previous jeep had RK 2.5" lift with Rancho 9000's - perfect jeep drove great - no complaints - drove like a sports car - as many people say better then stock - fully endorsed Rancho.

Current Jeep 16 JKUR 3.5" RK/Hybrid lift - has drove poorly since the lift - started off full Metal cloak lift ( Complete CA replacement, MC Springs, trac bar etc) --- switched out the MC springs as I thought they were riding too rough on the washboard roads - switched to 3.5"RK springs ----had the jeep aligned, installed superlift rear trac bar -- set Ranchos to 5 front 6 rear ( was set this way on previous jeep) --- drove bad...
Installed front (PSC brawler ) and rear Bumpers (LOD rear with carrier) -- set Rancho to 6 front and 7 rear --- still drove bad.

What I mean by bad - felt like the steering needed constant corrections - felt like cornering was washy/squishy/wandering <---- hard to explain ie. not right !
Installed Fox ATS steering stabilizer -- no improvement

This weekend - installed Yeti Flipped drag link, Synergy raised front trac bar bracket and a Synergy Tie Rod ---- figured I was under the Jeep just upgrade everything at the same time.

So with the recent addition - I do feel that my steering , drive is much improved - maybe in my mind but it now drives like it should have since buying the jeep - seems like I have more response from the engine but I'm sure its all in my mind.

BUT---------- the cornering is still bad - mind you I'm comparing this to my 15 JKUS which drove fantastic-- funny that jeep drove so good - wife reminds me everyday.

SOOOO - I pulled the just installed in October Rancho 9000's Front shocks --- the passenger shock when compressed doesn't respond like the driver shock - the rebound is much slower and stops about 4" from the top.

Anyone dealt with this issue or a bad shock ?
Been chasing this issue for months - could this be the culprit and Ive spent over a $1200 in upgrades to find that the shock was bad from the beginning.

There is a Youtube video of a guy demonstrating more or less what my shocks are doing..

I see that Rancho has a limited lifetime warranty - anyone ever used this and how does it work ?

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Old 03-20-2016, 10:55 AM   #2
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Possibly, i had a right rear do the same.
Also when i received the 5000x one front shock responded slower than the other. I contacted Rancho and was told it was ok. I really did not feel any issues but my OCD was in high gear. I bought 1 shock and replaced the slow one. Well i cant say it changed anything, Other then the OCD rofl

Try running the shocks on opposite sides, see if that changes anything.

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Old 03-20-2016, 11:01 AM   #3
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Having a similar feel in mine. Super boat like. If I hit a speed bump above 5mph, it sounds like the rear falls off a cliff with a pretty hard thud.

I'm still on stock, about 45k miles. I have a feeling previous owner may have had it lifted on stock and that blew one/them out quicker?
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Old 03-20-2016, 07:33 PM   #4
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So a majority of the time the warranty goes through where you bought them.
Is is possible yes.
I do think the swap is ideal too.
Out in Moab it is 75 degrees


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