Preventative Maintenance

[Spearmin]

So I'm no at 150k miles. Last week the water pump went and I did get stranded. Now I'm wondering what else can I replace preventatively to avoid getting stuck again. This water pump issue was the absolute first issue I've had with my Jeep so I'm not complaining. So far I have replaced/upgraded these things:

Water pump,
Tensioner
Belts associated with tensioner and waterpump
Upgrades shocks
Upgrades springs
Replaced coolant expansion tank.
What else needs to go?

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[Willys41]

Number 1 upgrade in my book.
RPM extreme JL fan controller.

http://www.rpmextreme.com/Product/311/Jeep-JL-JT-PWM-FAN-CONTROLLER-⭐.aspx

 

[Blacksport]

What engine?

 

[ScotM]

I’m going to guess 2.0- wth the coolant tank upgrade and the loud tensioner problems

 

[beewil]

Number 1 upgrade in my book.
RPM extreme JL fan controller.

http://www.rpmextreme.com/Product/311/Jeep-JL-JT-PWM-FAN-CONTROLLER-.aspx

I’m getting my RPM Extreme Fan controller installed as I read this post.

 

[ScotM]

I posted a step by step with pictures for the 2.0

 

[beewil]

Number 1 upgrade in my book.
RPM extreme JL fan controller.

http://www.rpmextreme.com/Product/311/Jeep-JL-JT-PWM-FAN-CONTROLLER-.aspx

I don’t want to hijack Spearmin’s post, but can you explain the positive override option on the Extreme fan controller. There seems to be some confusion. I thought that if the RPM unit failed that you would be able to still have the fan working on High so the engine would not overheat? How does that work? Is there a switch I turn on? Does it just do it automatically? Maybe Spearmin would be interested in the answer as well? Of course, you don’t want to upgrade to another part and realize that if that part fails, you lose an engine.

 

[Willys41]

I’m getting my RPM Extreme Fan controller installed as I read this post.

Great. You will be very happy with the fan controller. I have had mine on both my Wranglers for almost 3 years now.

 

[Willys41]

I don’t want to hijack Spearmin’s post, but can you explain the positive override option on the Extreme fan controller. There seems to be some confusion. I thought that if the RPM unit failed that you would be able to still have the fan working on High so the engine would not overheat? How does that work? Is there a switch I turn on? Does it just do it automatically? Maybe Spearmin would be interested in the answer as well? Of course, you don’t want to upgrade to another part and realize that if that part fails, you lose an engine.

You can order it with a pig tail wire for a positive or negative trigger. Meaning you ether run a positive wire from a over ride switch or a negative ground wire from the over ride switch. I choices a negative trigger just because it is easier.

 

[Willys41]

I don’t want to hijack Spearmin’s post, but can you explain the positive override option on the Extreme fan controller. There seems to be some confusion. I thought that if the RPM unit failed that you would be able to still have the fan working on High so the engine would not overheat? How does that work? Is there a switch I turn on? Does it just do it automatically? Maybe Spearmin would be interested in the answer as well? Of course, you don’t want to upgrade to another part and realize that if that part fails, you lose an engine.

 

[Willys41]

Before I ordered my first one I ask Jon at RPM Extreme if he had ever had one fail and he said no.
Put because some time I am on the road for 30 days in remote places I keep a spare RPM module and a spare radiator fan motor. just good insurance.
Also I did ask Jon if the fan bypass would work if the module fails and he said it depends on what fails in the module. So the answer is Yes you could loos all your fan function. Put after 3 years no issues.

 

[beewil]

Before I ordered my first one I ask Jon at RPM Extreme if he had ever had one fail and he said no.
Put because some time I am on the road for 30 days in remote places I keep a spare RPM module and a spare radiator fan motor. just good insurance.
Also I did ask Jon if the fan bypass would work if the module fails and he said it depends on what fails in the module. So the answer is Yes you could loos all your fan function. Put after 3 years no issues.

So my shop is hooking up the switch/positive override. He chose to go to the 12 V system. But I’m still a little confused. My apologies. I thought The switch/positive override they’re putting in for me overrides the system if the RPM controller fails. But if the RPM controller fails in some circumstances, the switch won’t work to turn on the fan? In other words, in what circumstances am I using the positive override switch/turning it on?

 

[beewil]

So my shop is hooking up the switch/positive override. He chose to go to the 12 V system. But I’m still a little confused. My apologies. I thought The switch/positive override they’re putting in for me overrides the system if the RPM controller fails. But if the RPM controller fails in some circumstances, the switch won’t work to turn on the fan? In other words, in what circumstances am I using the positive override switch/turning it on?

Before I ordered my first one I ask Jon at RPM Extreme if he had ever had one fail and he said no.
Put because some time I am on the road for 30 days in remote places I keep a spare RPM module and a spare radiator fan motor. just good insurance.
Also I did ask Jon if the fan bypass would work if the module fails and he said it depends on what fails in the module. So the answer is Yes you could loos all your fan function. Put after 3 years no issues.

I think I may have found my answer. The positive override switch is there to turn the fan on High and override the RPM controller. This would be in the circumstance of going up a canyon and knowing beforehand that you want to turn the fan on high in preparation for a steep long incline. I’m not sure how many people override in that situation but I think I understand now. Do you override your RPM controller to High very often?

 

[Willys41]

So my shop is hooking up the switch/positive override. He chose to go to the 12 V system. But I’m still a little confused. My apologies. I thought The switch/positive override they’re putting in for me overrides the system if the RPM controller fails. But if the RPM controller fails in some circumstances, the switch won’t work to turn on the fan? In other words, in what circumstances am I using the positive override switch/turning it on?

The override is only for turning the fan on. It bypasses the preset setting in the module.

 

[Willys41]

I think I may have found my answer. The positive override switch is there to turn the fan on High and override the RPM controller. This would be in the circumstance of going up a canyon and knowing beforehand that you want to turn the fan on high in preparation for a steep long incline. I’m not sure how many people override in that situation but I think I understand now. Do you override your RPM controller to High very often?

Never had to override the system. With the controller I have never even hit 218 degrees which would have turned the fan on full blast 100%. The highest I have hit was about 205 at 50% fan speed.
The controller works that good. Unlike before the controller I hit 235 degrees and than the fan only come on at 75% fan speed.

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