2.0L Coolant Flush

[Stuffedbuffalo]

Does anyone have the procedure for flushing the coolant in this engine? Is it as simple as opening the drain on the radiator and running water through the coolant bottle next to the turbo?

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[Angel K]

Hello people, a question, more than 40,000 members and no one knows how to clean the cooling circuit? You only have to answer if you need to make a diagnosis or if it is simply worth opening the radiator drain plug, thank you all.

 

[Angel K]

Hello again, I changed the cooling water about 15 minutes ago, first by opening the radiator cap and then removing the water pipes that are in the lower part of the radiator, above the steering damper, only 5 liters came out and I think it has 10 liters, if there is another system I would like someone to tell us how to do it. Thanks

 

[NWJeepr]

You need to figure out how to drain the block as well. Dumping the radiator might only be about half of the cooling system's capacity. You can buy or subscribe to the factory service manual for these things through Alldata, I believe.

Why don't you post a DIY writeup with pictures and show us all how to do it?

 

[Angel K]

Thanks NW jeepr, I had that possibility in my head, I'll have to investigate. I've been trying to get a repair manual for a while, either in book or digital format, but it's impossible for me. Shipping from the USA is very complicated. There's nothing in Europe and even less in Spain. Imagine being on an island in the middle of the Atlantic. My English is very poor, my translator is Google and doing DIY can be stressful, but I don't rule it out, when I'm clear about it. Alldata is only for professionals. Jeep USA sells CDs as workshop books, but as I said, they don't ship to the Canary Islands. I'm sure that among the members of this forum they can give us the information we need and thus save us the trip to the dealership. Thanks

 

[Stuffedbuffalo]

Thanks NW jeepr, I had that possibility in my head, I'll have to investigate. I've been trying to get a repair manual for a while, either in book or digital format, but it's impossible for me. Shipping from the USA is very complicated. There's nothing in Europe and even less in Spain. Imagine being on an island in the middle of the Atlantic. My English is very poor, my translator is Google and doing DIY can be stressful, but I don't rule it out, when I'm clear about it. Alldata is only for professionals. Jeep USA sells CDs as workshop books, but as I said, they don't ship to the Canary Islands. I'm sure that among the members of this forum they can give us the information we need and thus save us the trip to the dealership. Thanks

Hi AngelK,

Do you have oil in your coolant? Mine ended up being a cracked oil radiator that had to be replaced.

 

[Old Dogger]

Our Dealer has the tanks to power flush, and then vacuum fill. Yes, I pay to have it done, but it is flushed and filled the right way, the first time.

 

[Angel K]

Hi AngelK,

Do you have oil in your coolant? Mine ended up being a cracked oil radiator that had to be replaced.

No, it's just a matter of changing the coolant, it's already 5 years old and needs to be changed. I've only managed to empty 5 liters of the 9 it has, but I don't know how to empty the remaining 4. I think that by removing the thermostat it can be emptied, but I'm not sure. I'm sure someone knows how to do it.

 

[Heimkehr]

Our Dealer has the tanks to power flush, and then vacuum fill. Yes, I pay to have it done, but it is flushed and filled the right way, the first time.

Same here, with respect to brake fluid flush/fills.

I like to DIY where and when I'm able, but some things are worth farming out to the folks with the proper equipment. This is doubly true as vehicle systems get ever more complex.

 

[Old Dogger]

Same here, with respect to brake fluid flush/fills.

I like to DIY where and when I'm able, but some things are worth farming out to the folks with the proper equipment. This is doubly true as vehicle systems get ever more complex.

100% agree...

 

[SnowMonkey]

When I saw this, I decided to let the dealer do it with the professional equipment that they have.

 

[Old Dogger]

When I saw this, I decided to let the dealer do it with the professional equipment that they have.

Good call..

 

[Angel K]

It is more dangerous to change the brake fluid than to change the engine coolant. The coolant has to be drained and refilled, the brakes have to be bled wheel by wheel and if bubbles remain, the braking is poor and can cause an accident. I have changed the brake fluid, differentials, transfer case, automatic transmission, etc. Once we know how to change the entire coolant, I am sure you will continue spending your money to take it to the dealer… ha!!

 

[SnowMonkey]

It is more dangerous to change the brake fluid than to change the engine coolant. The coolant has to be drained and refilled, the brakes have to be bled wheel by wheel and if bubbles remain, the braking is poor and can cause an accident. I have changed the brake fluid, differentials, transfer case, automatic transmission, etc. Once we know how to change the entire coolant, I am sure you will continue spending your money to take it to the dealer… ha!!

All joking aside. The challenges that you're experiencing right now are just part of how it is designed. The system is more complicated. A traditional drain and fill doesn't work with the new engine. At the dealer (and a few private shops) there is an entire system that is connected to the coolant system on your engine. It is one part pressure and another part vacuum. This removes all of the old coolant while "filling" with new coolant. My local Jeep shop, not dealer, won't even do this work because they don't have the equipment. Also, they recommend that you use only the Mopar coolant. A lot of heater cores have corroded when used with "equivalent" coolants.

Ask me how I know after a new radiator and water pump.

Like you, I've changed quite a bit of fluids in various systems in a lot of different motors. This motor is just one of those that needs the equipment to be done right.

But if you figure out an alternative method -- post it here!

 

[NWJeepr]

Does the owner's manual call for flushing the coolant at 5 years? I thought it was a 10 year, 150k-mile interval. At least for US spec...

You'll never get all the coolant out without a flushing machine. But with 3-4 drain/refills you can get the old coolant concentration down to minimal levels.

And as far as I know, that doesn't include the intercooler. That is on its own cooling circuit.

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