My 88 YJ rides like a rock! - JeepForum.com

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post #1 of 19 Old 03-20-2013, 09:54 PM Thread Starter
Helo425
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My 88 YJ rides like a rock!

My 88 YJ rides extremely rough. I installed new Sky Jacker softride shocks but that only improved the ride slightly. I suspect that the leaf springs are not stock or possibly shot. How can I troubleshoot this?

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post #2 of 19 Old 03-21-2013, 03:59 PM
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post #3 of 19 Old 03-21-2013, 08:58 PM
jojojeep1
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mine ran hard also 33 by 12.5 i took the air down to 20 pounds its like night and day, rember they say 35 pounds but thats on a 7000 lb truck our jeeps are light trucks so 20 pounds wont hurt.
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post #4 of 19 Old 03-21-2013, 09:25 PM
demonz0
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Some lifts, add a leaf springs can just be rough like a wagon. Tire pressure is massive as I've learned recently. 20 psi to 45 psi it was just nasty. That'll shake the living crap out of you.

99 Cherokee 4.0L | 5in Lift | 33x12.5
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post #5 of 19 Old 03-22-2013, 12:19 AM
NonRubicon
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Trac bars. If you have them on, try riding with them removed.
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post #6 of 19 Old 03-22-2013, 05:14 AM
JST42LN
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Check the spring mount bolts. when I bought mine PO had used an air inpact to tighten them. there is a turqe spec. that and air preassure.

89 YJ 4.0L stroked, 4" springs, auto,35's, custom front and rear fenders
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post #7 of 19 Old 04-03-2013, 10:08 PM Thread Starter
Helo425
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Thanks folks!I did lower the tire pressure but I don't think I went low enough, I'll try some more. I did discover one thing the other day, I was hauling some sound equipment for our band (3 good sized amps and some other misc sound gear) and what a difference some weight in the back made! I thought I might throw some sand bags in the back unless somebody has a better solution.
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post #8 of 19 Old 04-03-2013, 10:38 PM
rambo3489
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I say your leafs are poo poo. There's a big difference between cheap and quality springs in terms of ride comfort and performance.

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post #9 of 19 Old 04-03-2013, 10:54 PM
Chrisnvegas
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Look through these threads. You shouldn't have to under-inflate your tires to get an acceptable ride. I run 25 to 28 lbs.

https://www.google.com/search?q=jeep...w=1366&bih=643

Post a pic of your current suspension so we can see your set up.

Using sandbags to correct a bad suspension? I'm not sure I like that idea!

Either your stock springs are wheezed or someone bought el-cheapo junk springs.

What happens in my Jeep, stays in my Jeep
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post #10 of 19 Old 04-03-2013, 11:24 PM
SnowdogMarc
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X2^ I run 28 psi in my 33X12.5's and I can go over RR tracks at 40k and not even feel them....the crossings not Dukes of Hazzard style LOL.

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post #11 of 19 Old 04-04-2013, 06:27 AM
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Quote:
Originally Posted by SnowdogMarc View Post
X2^ I run 28 psi in my 33X12.5's and I can go over RR tracks at 40k and not even feel them....the crossings not Dukes of Hazzard style LOL.
Wow you have one fast Jeep

1995 YJ. 2 inch BDS Spring lift. 1 inch shackle lift. 1.25 inch JKS Body Lift 33x12.5x15's. Engo 10,000 pound winch.

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I gave the Jeep the required offering of $$, sweat, and blood, and everything works fine now. -- Jim
Quote:
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. It started with a $200 axle, and a few thousand dollars later I was done :)
Quote:
Originally Posted by Luuca View Post
diagnose the real issue before you start going all Obama on it - spending mad cash you'll need for other important things.

Ask me how I know...
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this is also my second set of RC springs this year. I'd rather spend the money again and get something that will last.
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post #12 of 19 Old 04-04-2013, 07:53 AM
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Quote:
Originally Posted by NonRubicon View Post
Trac bars. If you have them on, try riding with them removed.
x2 this made it much better for me too

1992 YJ 1"Body Lift, Slip Yoke Eliminator & CV Driveshaft,
2.5" TJ exhaust, WJ valve cover, XJ Computer, External Slave Cyl AX15,
Durango Steeringbox, No track or sway bars, CJ tailgate, on 31's :)
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post #13 of 19 Old 04-04-2013, 10:13 AM
dukeryder
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It's gotta be your leaf springs, I had some Superlift Springs on my '66 CJ5, I was running 32"s and tried all kinds of tire pressures, loosened all shackle bolts to 35 ft/lbs, greased everything and even put on on some Rancho RS9000 set to the softest settings and the ride OFF ROAD was still unbearable. The ride was so rough a kidney belt was almost needed!

I'm running BDS springs on my YJ now with the BDS Shocks and the ride is much better than the old CJ with those crap lift springs. In the future I'm planning on swapping out the BDS shocks for some Bilstein 5100s for an even better ride.
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post #14 of 19 Old 04-04-2013, 11:02 AM
pasinbuy
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Again, track bars will give you the buck board ride. Take both off and you will be happy.
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post #15 of 19 Old 04-04-2013, 11:42 AM
JakeMurray24
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It could be lots of things.. Main thing being its a YJ. Loosten and re torque your spring bolts to the proper ft/lb, could grease them while your at it, tire pressure is also a big thing. In my 33" goodyear mtr/k i have 19psi which was decided after many chalk tests, shocks i find dont play much part in ride on leafs

and Ditch the track bars, and sway bar like Pasinbuy said! they are both useless.

1989 YJ Candy apple Green, D30front, 8.8rear, 4:10's, Lock right front, 4"RC springs rear, 3.5"BDS springs front, SYE with double cardian shaft custom made, home made rockers, 33" goodyear mtr/k, smittybilt stinger, home made light bar, marine stereo, cobreau baja jp seats
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