My first clutch was replaced by the dealer at 80k miles. When it went it sounded like there were marbles in the front lower engine. I'm at 180k miles and it sounds like the second clutch is going bad. At idle it sounds like something with bearings is wobbling, and after it warms up there is a squealing sound every 20 seconds. If the clutch is bad, I will replace it with a Hayden. My question is how do I determine if its the clutch. With the engine off, it does not spin freely. I try to spin it and it goes only about a quarter turn. I've seen the procedure where you block the radiator and take temp readings. I was wondering if there's an alternative method.

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05 CRD Sport, Inferno Red (240K miles, Jan 2016)
Westin Brush Guard, Hella 500, Hidden Hitch
Magflow Muffler, ProVent CCV, Fumoto Valve, ORM
OEM Skids and Rails, EVIC, Mr Diesel Fuel Pump
Michelin XTerrains 235/70/16

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http://www.Colorado4Wheel.com
"Its not about what you can DO with your Jeep, its about where you can GO with your Jeep."
Knowledgeable - But Caustic

Sir sam, i've seen that procedure. I don't have a thermometer like the one described, nor a tach or strobe light. That's why i asked if there is another way to determine if the fan clutch is bad.

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05 CRD Sport, Inferno Red (240K miles, Jan 2016)
Westin Brush Guard, Hella 500, Hidden Hitch
Magflow Muffler, ProVent CCV, Fumoto Valve, ORM
OEM Skids and Rails, EVIC, Mr Diesel Fuel Pump
Michelin XTerrains 235/70/16

Sounds like a lighter fan and better fan clutch is in order. See this thread.
http://www.jeepkj.com/forum/showthread.php?t=48653

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Atlantic Blue 06 CRD Limited (his)
Joined by a 2000 XJ Classic (hers)

you can block the radiator and listen for the difference the fan makes when the clutch engages.

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2005 CRD
stuff
Skeptic quod gratis asseritur, gratis negatur

Does the nylon fan provides the same airflow amount as the metal fan? do you guys know? I like the nylon fan idea!!!!!

Hi sorry, look at the youtube video. If you can get yours to free spin after turning it a little while then its definitely bad.

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http://www.Colorado4Wheel.com
"Its not about what you can DO with your Jeep, its about where you can GO with your Jeep."
Knowledgeable - But Caustic

According to GDE, the plastic gas fan pushes LESS air than the stock metal CRD fan. However, with the more effective Hayden clutch, I expect to get better cooling in extreme conditions than I have now and have less horsepower loss when the clutch is not engaged due to the lighter weight of the plastic fan.

DOC

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2005 KJ CRD Ltd Detroit TrueTrac Bilsteins G2 GDE "HOT" ECU GDE TCM "Tow Tune" "euro" TC SEGR Weeks Elbow New HG at 130K ARPs Clean CAT aFe Filter Magnaflow Exhaust EHM Cumminos In-Tank Lift Pump Hayden Fan Clutch Nylon Fan VH Enabled with GDE lower shutoff point Recalibrated Temp Gauge Tekonsha Prodigy Sears P-1 ZDDP