I have used the Raybestos Opti-cal newly manufactured calipers on several vehicles with excellent results.
Unfortunately, Raybestos is part of the First Brands bankruptcy debacle, so I have no idea if and for how long their calipers will still be available.
That said, with enough lead time...
Found this on a Wrangler forum —
The Four Stages of Owning a Jeep
1) Hell Yeah… It's fixed!!!
2) Let's go wheeling.
3) What was that noise?
4) I hate this thing!
I will inspect the bushings on the UCA more closely.
NO lift, but lousy roads and cheap parts ARE in the mix.
Once again, any protocol for checking for actual play in the UCA, other then visual inspection??
Yes…LCAs were done under recall about 7 years ago after I noticed the acceleration/deceleration swaying. That was woerd enough. lol.
No sway this time…just a loud and random clunk in back and a shimmy as the rear wheels "realigned" on the highway at speed.
I figure that is the cheap UCA...
Giddyup is starting to experience the random loud clunk and vibration and even shimmy in the rear end at hoghway speds. It has happened twice now in the last few months and is startling. I am thinking that something with rhe cheap UCA I installed is locking up and then releasing.
I am NOT...
I regret buying the front end suspension kit and read UCA for my 2005 from 1AAuto Parts when I was short on $$ during Covid.
Given the amount of work involved, I even KNEW thay I would likely regret buying more affordable (read CHEAP) parts, but I couldnt really FIND, let alone afford better...
This is what my local AI says about it when I asled—
"can a single 12v electric cooling fan have two separate windings each activated by a separate relay to control speed?"
Yes, a single electric cooling fan can have two separate windings—each controlled by its own relay—to operate at...
Not sure … on my 2005 CRD, I simply used a bent paperclip to jump terminal #30 (constant battery power) to terminal #87 (output to device ie fan) in the fuse box right where the fan relay plugs into.
I then checked fan rpm with the photo tachometer.
I then jumped the second relay the same way...
Like I said, I couldn't hear the 300 RPM difference between hi and lo speed either.
I suggest that you buy an inexpensive photo tachometer and check again rather hten trying to replace an elusive module that might cost more then the tachometer.
Something like this —
On my 2005 CRD, I was surprised to learn that fan engages at high speed only when BOTH relays are engaged.
ALSO, the difference in fan speed between low and high is negligible…IIRC about 300 RPM.
Its actually difficult to hear the differnece, but I used a cheap RPM tool to verify that there...
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