Lifter failure prevention

[Tncdrew]

Is this like an infomercial thread?

Yeah, yeah....
Point well taken ?

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[Deleted member 59498]

Yeah, yeah....
Point well taken ?

Haha I am just being an ass.

 

[Willys41]

A few months back after the fan controller on the Rubicon trail it never went over 201 and most of the time stayed 190 to 195
Before the fan controller on the same trail 215 to 221 all day long

 

[Flip]

A few months back after the fan controller on the Rubicon trail it never went over 201 and most of the time stayed 190 to 195
Before the fan controller on the same trail 215 to 221 all day long

My temps used to run around 220-225 now they seem to have increased I don't why. The pusher fan comes on and the temps go back down but 235 seems high to me.

 

[Gorilla57]

My temps used to run around 220-225 now they seem to have increased I don't why. The pusher fan comes on and the temps go back down but 235 seems high to me.

Just a heads up, the JL doesn’t have a pusher fan, only the big radiator mounted pulling fan.

 

[Flip]

Just a heads up, the JL doesn’t have a pusher fan, only the big radiator mounted pulling fan.

Oh OK, my bad.

Thank you

 

[mwilk012]

My temps used to run around 220-225 now they seem to have increased I don't why. The pusher fan comes on and the temps go back down but 235 seems high to me.

You turned your A/C off, that's what happened.

 

[azjl#3]

Yes

Yeah, same here, so this jeep, number 4 of 4 JK/JL, is by far the hottest running. Etorque is my guess. Hoping over time, it burns in and cools off.

Notice the two extra cooling bottles driver side? Thats the etorque radiator fluid, is the radiator in front or is it underneath in back?

 

[mwilk012]

Yeah, same here, so this jeep, number 4 of 4 JK/JL, is by far the hottest running. Etorque is my guess. Hoping over time, it burns in and cools off.

Notice the two extra cooling bottles driver side? Thats the etorque radiator fluid, is the radiator in front or is it underneath in back?

The battery cooler is in front of the radiator, has an electric pump going to the battery pack, it’s own segregated reservoir, and a few dozen feet of hoses and pipes.

 

[Kyanche]

When I haven't started my Jeep in a couple of days, the 3.6 rattles during startup. As concerning as that seems, every 3.6 I've owned and several others I've heard at the dealer made that same sound lol.

TBH I rented a grand cherokee last week, and a charger (both 3.6L) a few months ago that both had a louder idle than my wrangler's 3.6 does.

YMMV with those noises lol.

 

[mwilk012]

When I haven't started my Jeep in a couple of days, the 3.6 rattles during startup. As concerning as that seems, every 3.6 I've owned and several others I've heard at the dealer made that same sound lol.

TBH I rented a grand cherokee last week, and a charger (both 3.6L) a few months ago that both had a louder idle than my wrangler's 3.6 does.

YMMV with those noises lol.

I have never heard any DOHC VVT V6 or V8 engine not rattle on startup, especially if they have sat for more than 24 hours.

 

[jack bauer]

This is what I did over the past 4 months

Here is what I discovered and what I fixed
This is how the cooling system works or not working
The thermostat opens at 190 degrees
The cooling fans comes on at 1/4 speed at 221 and will only go fulls speed at 231 degrees
I have been trying to get control of the cooling system by adding a pusher fan on the condenser put this is what I found
Most cars including the jeep JK the condenser is mounted 1/4 to 1/2 in. from the radiator
On the Jeep JL the condenser is about 1 1/2 in. away from the radiator
I can get the pusher fan to shoot air though the condenser at 150 MPH put as soon as it hit the radiator the air blows out the large gaps between the condenser and radiator and NO air going through the radiator
Next step was to close the caps between the condenser and radiator to force the air through the radiator
So now with the gaps closed off I have about 15% of the air going through the radiator and the rest of the air is blowing back though the condenser and trans cooler
Two things wrong here. The gap between the condenser is to large and the radiator WILL NOT allow free flowing air to pass through it whether you are pushing air at 150 mph with a fan or diving down the road at 60 /70 mph and that is why you see a 30 to 40 degree swing in the coolant temps. You would thing driving down the road you are getting air passing through the radiator put you are getting very little to none until the fan kicks in and sucking the air through the radiator
I ordered a Mishimoto radiator (back ordered) it looks to have a more open core that will allow more free flowing air to pass through
I will install the Mishimoto and see how it goes
And NO. The radiator is not plugged in any way inside or out side. The jeep did this from day one . New in 2020
The Engineers got this one wrong and they know it from what I have read
READ THIS
https://jalopnik.com/the-engineering-behind-the-jeep-gladiators-tow-rating-1833657453

UPDATE
The Mishimoto radiator made no difference in lowering the temperature
Step 2
Just installed the Rpmextreme JEEP JL PWM FAN CONTROLLER
This is a game changer . Here is how your fan will work with this device


Operation:

When the engine is running the PWM fan will run at a low Idle speed (15%).
When the module reads the engine temp it will command the fan to the desired %.

Fahrenheit

199 degrees = 30%

205 degrees = 50%

212 degrees = 75%

218+ degrees = 100%

Override inputs: These are optional inputs depending on if you ordered them.

These inputs will run the fan as long as the unit is powered up, the engine does not have to be running for these to work. You can use these in various ways.

Example:
When the ( VIOLET ) wire has 12 volts applied the fan will run at MAX speed.

9/15/23
I have only three days of testing put my temps now run 188 to 192 at idle all day long
Normal driving I see 192 to 195 and 199 to 205 under hard acceleration put comes down real fast
Also my oil temps are about 20 degrees lower mainly because the the engine is running cooler and now I have constant air movement over the oil cooler
This weekend I will be testing on a long up hill drive put I suspect of 215
UPDATE 9/23/23


Just got back from a trip to Lake Tahoe from the bay aria


Going up high way 80 from Auburn to Truckee at 65-70 mph the coolant topped out at 212 degrees / Trans 206 / oil 221

As soon as I hit the top of any hill the coolant temp would fall to 188 to 192 within 1 minute along with the oil and trans temps


The last trip to Tahoe about a month ago my coolant temps would hit 221 on any little hill and hit 231 or higher on the larger ones


Rpmextreme JEEP JL PWM FAN CONTROLLER has made a big difference in keeping air moving though the radiator and keeping my jeep running cooler


A PWM FAN CONTROLLER is nothing new. these are out there for other cars /trucks and motorcycles


Jon has programed one just for the jeep JK &JL


info
Jon Schaefer RpmExtreme
205-631-8225 6774 Old Hwy 31N
Rpmextreme.com Gardendale, AL 35071

Bummer not ready for the e torque.

 

[AlgUSF]

I have never heard any DOHC VVT V6 or V8 engine not rattle on startup, especially if they have sat for more than 24 hours.

I do think after 23K my 3.6 has quieted down a bit. The rattle noise was pronounced when my Jeep was new. I'm not sure if the components have "broken in" or what but it is significantly less noticeable on start.

Similarly, my 2014 4.6L Tundra made a rattly noise on WOT when it was newer but at 84K the noise has gone away.

 

[ALRUI]

will follow this thread.

i think i’d like to take a look at cams at 100k just to see and for the experience. i believe there’s a tool or two you can purchase to make the process a bit easier. i’m wondering if anyone had interest in sharing cost of the plastic tools involved? i think one helps to take tension off the chain. if no interest, that’s cool too ?

I know this is an old thread but the plastic tools are generally for the NON VVT engines and won't work. The tools for the VVT's (our JL's) are metal so far as I've seen and a good set will cost approx $250. That said they work GREAT!

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