My lights are starting to flicker again at certain RPMs and they go dim for a few seconds whenever I let off of the throttle.
The last clutch pulley lasted a little over 60,000 miles. It was an OEM from Mopar Parts Online.
This time I'm going to do the two piece mod to the fan shroud, I'm not fighting that $%^&* thing anymore.

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TWO Identical 2005 Liberty Sport CRDS
#1 CRD, 174,000 miles. Eco tune, Samco hoses. Mobil1 0-40w used since day one
#2 CRD 143,000 miles. Bought used (unknown history) with 100,000 miles. Samco hoses.
Eco tune, new rockers, and 5 volt glow plugs installed at 124,000 miles

I had an AC Delco in Cincinnati rebuild mine at 40k miles, and it's been bulletproof ever since. I don't know what they used, but it sure works.

Why would you take the fan shroud out of the way? NAPA makes an awesome bar that will go down and put the tensioner in it's place so you don't have to get down there with an 18" breaker or something stupid.

Although I admit that I took a Sawzall to my fan shroud when I did the water pump, it'll pull out from the top now with the removal of about 4 bolts, haha....

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Silver 2006 KJ 2.8L CRD Limited:
GDE ECO Tune / Fumoto Valve / E-Tecno GX3123 7v Glow Plugs / 2nd Gen Fuel Head / Mishimoto RED Hoses / Rockers/Lifters @ 114k / Hayden FC + 11 Blade Nylon / Sears P1 Battery / Transgo 45RFE-HD2 Reprogramming Kit / Timken Front Bearings

Is this because the clutch is going bad? Or the alternator as the whole unit going bad? Mine has been doing this for quite a while now and I have been puzzled why it is doing it.

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Phil
2005 131k 3.7 Gasser (Lifted-CRD Springs, 4.10 Gears, F+R DTT, Teraflex 2wd Low, Skidrow/Mopar Skids, Rock Lizard Super Skinks, Goodyear Wrangler Authority 31x10.5-15)
2012 Triumph Tiger (TKC 80 Front Tire Heidnau K60 Rear, Crash Bars, Skid Plate, Bark Busters, Pelican Case Top Box)

When my alternator pulley failed at around 50K, there were no apparent electrical symptoms, just squeaking belt and jumpy tensioner. I'd say if you're getting electrical issues, the alternator itself could use replacement.

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SmokyCA
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2006 CRD, GDE Ecotune

When my first clutch pulley was failing, I had the same flickering and dimming lights, along with a faint chirping sound and rust colored dust coming from the pulley.
I didn't have a jumpy belt tensioner, yet.
I can't get to the front two alternator bolts very well without removing the shroud, and I can't fit the pulley removal tool in there either with the shroud in place.
I just remembered, my red top Optima battery was crapping out around that time, also.
It may have been a little of both, weak battery and alternator pulley failing.
Anyhow, after almost three years of trouble free driving, the flickering lights are back.

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TWO Identical 2005 Liberty Sport CRDS
#1 CRD, 174,000 miles. Eco tune, Samco hoses. Mobil1 0-40w used since day one
#2 CRD 143,000 miles. Bought used (unknown history) with 100,000 miles. Samco hoses.
Eco tune, new rockers, and 5 volt glow plugs installed at 124,000 miles