2013 LR4 5.0L Cold start knocking noise

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BeemerNut

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If that's the fan clutch ticking while the fan is slowly spinning less than engine driven fan pulley speed you should then have a higher rpm ticking sound when the fan is carefully slowed down and stopped.
BTW you living in a cold climate a block heater would be a good idea reducing cold warmup times on the engine. If I lived in that cold climate I would install a block heater as well a heating pad for the battery as well the most important addition installing a Pre-Oiler to the engine. Thin watery oil on up to 10 or 20wt (low number) muli viscosity oils no matter the weights a Pre-Oiler will allow pressurized oil in the engine before ever rotating the crank, rod bearings, cams and piston bores with oil slung off the crank. Bearings pressurized now with oil dripping out of them that will sling off the crank lubing the cold dry cylinder bores. Timing chain tensioners pressurized vs retracted after reading about the 5.0 having issues. Think about it, hot shutdowns the best way for hot oil to drain down. http://www.masterlube.net/exotic.htm I have no connection with Master Lube except phoned questions and conversations with the owner of Master Lube 20 years ago coming up January 2021. First cold start morning new ownership of Disco realizing it had dry cold start issues.

Their 3 quart system with replays, electronic (adjustable) time delay plus a single Red/Green LED with mini NO (normally open) switch low on the dash for a simple basic Pre-Oiling system any woman and wifey can operate. Ignition on, touch switch, Green LED goes to red and once system has cycled and engine been pressurized 8-10 seconds the LED turns to green again, start engine. No rattling rods dry starts, dripping wet engine internally. Best part after a "complete" overnight oil change, installing a empty 34 ounce capacity oil filter,
not LR speced undersized filter, oil added to known capacity in quarts, hit button and have a fully pressurized engine before starting vs ratting rods.
I rather have the LR engine run 2-300K happy miles vs early death problems.

Months reading 5.0 engines having issues from before and around 60K miles requiring expensive repairs to be repeated again later, WTH?
Protect what you got if it were my vehicles under normal climate temps not alone cold weather starts.

Talking a DIY Master Lube preoiler install with DIY designed control system protecting the "antique pushrod" 4.6 95 Disco of 19 plus trouble free years service. They have a bad case of morning cold dry starts of 7-9 seconds with rods ratting before oil pressure has been established. Starts after oil changes much longer times beyond the cringe zone. Not anymore with new 4.6 installed......~o&o>.......
http://www.masterlube.net/exotic.htm
 

DaytonaRS7

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took the LR4 on a road trip this past weekend. it was in the coldest temps its its seen (25°f) since my ownership in March of this year.

Thanks to this thread i now know i have a failing fan clutch. just ordered a new one and the proper wrenches.

the sound is as if the fan is out of balance and randomly clips something when roating. inspected the fan, it is not wobbling, so i ruled the "out-of-balance" theory out. thje sound is also not apparent once warmed up or in temps over 40°f
 

BeemerNut

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Unusual or any other noises means something is wearing away. Run long enough it will finally become evident what had failed that even Stevie Wonder can diagnose.....~~=o&o>.......
 

DaytonaRS7

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been trying to change the fan for 2 days now.

Day 1. even though i read that the threads are reverse...i spent 30 minutes tryign to "loosen" the fan. also, the cheap set of wrenches i got from amazon were loose and slipping off the nut. i gave up when it dawned on me that i was actually tightening the fan and noticed the nut was getting ever so slightly rounded.

Day 2. had my shop cut a new wrench on the laser, that was slightly smaller so it wouldn't slip off. this time when actually trying to loosening the nut, the cheap amazon holder wrench cracked.

going to have my shop cut a new holder wrench, and try again. hopefully attempt 3 goes smoother.
 

CORover4

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Nice that you have a shop to cut tools! I just changed my water pump and fan pulley and rented the tools from my local auto-parts store. Fan came off like a charm. Someone earlier mentioned replacing the water pump...as long as you are in there. If you elect to do it, a number of steps to get to it. Putting in the new water pump was not slide in with the fan pulley in place. You need to be relatively straight on to get the oil cooler line to slide in. I removed the fan pulley, but watch out for the stretch belt. I could not buy/rent the right tool locally to remove it so I cut the belt off. The belt was not easily sourced in my area (not even from local, semi close Rover dealer) so that delayed the project. Belt was not expensive, $22, GATES belt. Stretching the belt on with simple tools from the local auto-parts store was OK. Filling and purging the coolant also takes some time. Also, “as long as you are there”, and if you remove the stretch belt, check the serpentine belt. The stretch belt must be removed to change the serpentine belt.
 

DaytonaRS7

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Nice that you have a shop to cut tools! I just changed my water pump and fan pulley and rented the tools from my local auto-parts store. Fan came off like a charm. Someone earlier mentioned replacing the water pump...as long as you are in there. If you elect to do it, a number of steps to get to it. Putting in the new water pump was not slide in with the fan pulley in place. You need to be relatively straight on to get the oil cooler line to slide in. I removed the fan pulley, but watch out for the stretch belt. I could not buy/rent the right tool locally to remove it so I cut the belt off. The belt was not easily sourced in my area (not even from local, semi close Rover dealer) so that delayed the project. Belt was not expensive, $22, GATES belt. Stretching the belt on with simple tools from the local auto-parts store was OK. Filling and purging the coolant also takes some time. Also, “as long as you are there”, and if you remove the stretch belt, check the serpentine belt. The stretch belt must be removed to change the serpentine belt.


i replaced my water pump 1k miles ago, for preventative maintenance.
did it with the fan in place. I didnt seem to have any issue. just angled it correct to get between the oil filter housing and the fan blades. i think it was about 1.5 hrs start to finish.

coolant top off is made much easier with a vacuum fill tool. i purchased it for my Audi, which is a huge PITA to bleed the coolant system. ive used it on numerous cars and it takes 5 minutes to fill, ensures no air in the system, and no leaks. worth its weight in gold.
https://www.ecstuning.com/b-schwabe...4OVTtSWeozJeHaxbvlqEo_8H5F3qL11xoC4H0QAvD_BwE
 

gsxr

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Good to hear it went smoothly with good tools.

Do you have links or name/numbers of the tools which didn't work? So we know what *not* to buy?

:eek:
 

DaytonaRS7

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Good to hear it went smoothly with good tools.

Do you have links or name/numbers of the tools which didn't work? So we know what *not* to buy?

:eek:

Sure.

Get the tools that look like this. Make sure the wrench size (without extra hole) is 35 or 36mm. I found 36mm to be a little loose, but it could have been a slight tolerance issue.
https://www.amazon.com/dp/B06XP17R5L/ref=cm_sw_r_em_apa_fab_TWGGFbJF4BXVP

Do not get the tools that look like this. The holder tool sucks and bends.
https://www.amazon.com/dp/B089N65J8C/ref=cm_sw_r_em_apa_fab_FZGGFbGDZ0R8V
 

gsxr

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Thanks! Wow, that's a major price difference... but apparently worth it!
 

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