Many guys have the rushing water. Its trapped air in the system getting out. Not uncommon and if you hear rushing, that's a good sign that you have any coolant at all.
If you can rent or borrow another vehicle, do it and don't trust the rado before you get this figured out.

If not, do this.
Go get the proper coolant, orange Dex-Cool, believe. fill the tank to the fill line, turn on the heater to full heat, go for a drive, for about ten minutes, park it.
give the system time to draw the coolant in.
You will not see a temperature reading on the gage because there is no coolant around it to read. This is a dangerously low coolant situation.

check the tank level and refill as necessary. bring the Dex-Cool AND A FUNNEL with you on the trip and check the tank at every stop AND BEFORE EVERY START.
These are not the old open systems you could just fill up, they have to draw the coolant in.

Again, I advise you delay your long excursion in this vehicle until you get the system filled and checked.

YOU CAN OVERHEAT IN THE WINTER!!

 

Hi guys.

I've had an issue with the rushing water sound on my Canyon since I bought it. Dealer said it was normal, but I think it is not. I asked them to fix it a little before Christmas and I'm waiting for them to give me an appointment.

But tonight I took the truck and while driving i realized that the engine temperature was not going up. It stayed a little above 75. It was going slowly higher when I was at a stop light, but then going back down on the highway.

When I was back home I looked at the coolant level and it was basically empty.

Are the rushing water sound and the fact that the coolant is low related?

Also I have to drive the truck tomorrow for something urgent (absolutely need the truck). It will be a 170 miles ride. Am I right saying that it is safe to fill the coolant and drive the truck? It is not overheating because it is winter.

Thanks for your help guys!

Hi guys.

I've had an issue with the rushing water sound on my Canyon since I bought it. Dealer said it was normal, but I think it is not. I asked them to fix it a little before Christmas and I'm waiting for them to give me an appointment.

But tonight I took the truck and while driving i realized that the engine temperature was not going up. It stayed a little above 75. It was going slowly higher when I was at a stop light, but then going back down on the highway.

When I was back home I looked at the coolant level and it was basically empty.

Are the rushing water sound and the fact that the coolant is low related?

Also I have to drive the truck tomorrow for something urgent (absolutely need the truck). It will be a 170 miles ride. Am I right saying that it is safe to fill the coolant and drive the truck? It is not overheating because it is winter.

Thanks for your help guys!

View attachment 401922

Just replaced my 2015 Colorado water pump. Start there. Also if you have to do the trip get a bottle of K seal. Works like a charm. I had to resort to the K seal to hold me over before I could get it in the shop to discover that I needed a new water pump.


View attachment 401922

 

I agree with iamscotticus. Go buy the coolant before you drive that far. I had the rushing water problem and after my friends kept making comments about it I set out to fix it. All it took for me was adding more coolant to the tank and that was it. No more water sound.


Sent from my iPhone using Tapatalk

 

Good info there. I didn't know that the gauge temp was reading the coolant temperature. So that's probably why the temp was fluctuating.

Also, I forgot to mention but the rushing water sound wasn't there anymore during the drive (was always there previously). So I guess the coolant somehow got low enough for it to disappear.

I'll try to get an appointment with the dealer as soon as possible and try to delay the trip (but with the lockdown that we might have in Quebec... It'll be hard, damn pandemic!).

I'll keep you guys posted.

Thanks.

 

Good info there. I didn't know that the gauge temp was reading the coolant temperature. So that's probably why the temp was fluctuating.

Also, I forgot to mention but the rushing water sound wasn't there anymore during the drive (was always there previously). So I guess the coolant somehow got low enough for it to disappear.

LOL they "fixed" your problem

 

If you get a air bubble around the temp sensor you get readings that jump around. Follow the advice above and you should get it sorted out.

 

Got a call from the dealer, they are closed because of pandemic but work on emergencies. They told me they will take care of it before the warranty expires. In the meantime they told me to fill the coolant when required. So I will be able to make the trip watching the coolant level frequently.

 

From you pic it looks to be not empty, there is coolant at the bottom of the tank. BUT NOT SURE. I would never advise anyone to drive it but if it were mine and it's under warranty I would fill the sucker with water (coolant if it can freeze) and watch it close for leaks and watch the temp.
The only thing in your post that scares me would be the fact that the temp gauge doesn't go up. Could be a bad sender, could be a bad t-stat, or the scariest thing is not enough coolant in the system for the sensor to work.
I'm thinking fill it up and make sure the gauge works so you know if it's getting hot.
If it doesn't seem normal at least have a mechanic look it over for you before you drive.
I know that dealer SAID they would take care of it but man a new engine is not a good test to see if they really will. Plus insurance companies can be complete A holes.

Just FYI the rushing sound is a good thing in your case, like mentioned already, it shows it at least it has something in it. Also, it is very common for it to do this even when it's a tiny bit low. The easy fix is overfilling a bit, the "correct fix" seems to be a new tank design because of this problem.

Please let us know how it goes.

 

Hi guys.

I've had an issue with the rushing water sound on my Canyon since I bought it. Dealer said it was normal, but I think it is not.

Well technically it is normal--it's the normal sign that your coolant is low!

This is actually a good example of why you should never believe your service department when they say X will cause Y. They really don't know.

 

Well technically it is normal--it's the normal sign that your coolant is low!

This is actually a good example of why you should never believe your service department when they say X will cause Y. They really don't know.

Yeah I know, I've told them multiple time that I think something needed to be fixed but they kept telling me it is normal. So I monitored the issue until this happen.

But I do have emails I sent them telling them the issue was still there. I also have a report from the independent inspection saying there is a coolant leak and a report from them saying they fixed it.

The manager told me they will look into it and that maybe their fix didn't hold finally.

That's always my modus operandi: tell them something is wrong, then tell them why it's wrong, get a written proof that I told them, then monitor and come back when broken again.

I know more about mechanics than their average customer and make sure that they know it. They can't really bullshit me.

 

Btw guys thanks for all the comments and advice on here. Really appreciated!!

 

Like others said, these newer systems are closed loop and pressurized. Depending where the leak is it will just leak or could leak and suck in air.

Coolant doesn't "go away" it either leaks or gets burned. Decent shop can test via pressure, leak dye etc.

It was low in the pics but the coolant tank is a tiny fraction of what is in the engine so I wouldn't exactly worry if I was around town and could stop if necessary. I get that you had to take the trip but slow leaks could quickly become fast/big leaks. Sort of like ignoring your hot water heater at home...

 

This situation is another where the fake temperature gauge on Colorados needs to be pointed out. If the gauge properly reacted to temperature changes the OP probably would have been on top of this situation earlier.

 

Naw, it reacts just fine, it's just not accurate until it get to 210 or so. I honestly can't say what it does when it overheats though, don't want to test that.

 

I went through 3 cars to learn about cooling problems.
(1) 82? Olds Cutlas Diesel, ran dry
(2) 85 Subaru wagon, radiator cap blew, coolant went down under, never saw it, burnt up. liquid glass couldn't seal it all.
(3) 86 Mazda B2000, heater hoses, ran dry. caught it in time.

What I learned:
If you buy a used car, replace ALL the coolant hoses, thermostat and radiator cap. Dont just change the easy ones, the older soft hard to reach ones will blow. And they will do it Christmas day.
With any car, check the coolant at least every oil change. Strange coolant problems seem to occur when its winter time.

 

I swear I can smell a coolant leak a mile away. I can't remember how many times I've done an inspection on my vehicle because someone else near me on the road at a light or whatever had a leak. lol
Same with oil leaks....
And now that I have quit smoking, I can smell them filthy smokers too. lol

 

Well, now I have to agree that the design is bad. I bought the truck 2 months ago and still the oil change is not due, so other than the dealer who fixed some issues prior to delivery, I had no reason to open the hood (I work from home because of Covid-19 and barely use the truck, so I didn't even fill the windshield washer and the blinker fluid yet).

No way I could have guessed that there was no more coolant. Maybe I ran low if it a long time ago and it was just now that the gauge acted weird.

On my 2008 Tiburon, I remember running low on coolant and either had a check engine popping or a specific light (can't remember). Immediately filled the coolant and light was gone.

 

On my 2008 Tiburon, I remember running low on coolant and either had a check engine popping or a specific light (can't remember). Immediately filled the coolant and light was gone.

On my RX/7 just a bit of air in one part of the upper hose area would signal an alert. That was 1986!

 

Most new vehicles are most accurate in the normal range. They have been that way for a long time. Some of us are more keyed into looking at gauges. The general population could not even tell you if there is a gauge.

 

Got a call from the dealer. They gave me an appointment next Tuesday for them to check it. They said that since it could be a major issue (leak from the water pump) they will keep the truck and provide me with a replacement car in the meantime. So for now, good service from them!

 

Ok so I got it back from the dealer.

They told me that it was the same leak. They said that they tighten the clamps and after a pressure test, there was no more leak. They also told me that if the leak is coming back, they would change a hose completely, again all under warranty even though it will be past the 3 months mark.

I'm not 100% satisfied, but at least they told me that they will fix it for all if it comes back. Just gonna have to monitor the coolant level for a while and see if the rushing water sound comes back (it was most likely an indication that the leak was back).

 

Yes, check it often, keep the level way up, even a bit over the full line. That should keep the noise away too.
I bet it will be fine now.

 

Reviving the thread for some updates.

They did replace the hose around a month ago (maybe a little more).

Went to do the oil change today and again saw that the coolant level was almost empty.

Gonna call the again to have it fixed once and for all. For now I think the dealer is trying, so I'll keep giving them a chance. We will see.

When doing the oil change we saw a very small amount of coolant near the passenger side where the rushing water noise comes from. I guess that it might be the ? intercooler ? condenser ? that is located there that might be leaking.

To be continued!

 

Possibly the heater core?

 

Maybe, really haven't tried to look what is there. But the leak is somewhere there. I'll let them figure it out.

 

just to be clear, do you park in the same spot every night? have you neem noting any coolant under the truck? where is the coolant going? leaks have to go somewhere. have you changed the oil lately? any sign of coolant in the oil?

 

Changed the oil today. Looks flawless. Haven't seen any spots in my parking. But it's been winter so lots of snow shoveled all the time. Don't know if it is burnt while driving and it doesn't leak when the truck is not running. Did one or 2 revs after doing the oil change, might have leak at that time. Really hard to tell.

 

There is engine knock. And the oil was flawless.

But I brought back the truck to the dealer, the checked it again and they told me it was the same issue as last time, the upper hose that go down near the firewall. The adviser told me that what they did last time was like a Band-Aid and that now they will fix it for good. I'm starting to not trust them cause last time they told me it was fixed for good and now it is just a Band-Aid... I only go there now because it is all done under warranty.

I hope that it is going to be fix properly. They seem to have played under the dash cause the passenger seat was moved all the way back. Hopefully they checked properly the heater core.

To be continued