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post #1 of 32 (permalink) Old 03-07-2017, 12:29 AM Thread Starter
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/// Strong strange sweet smell within vehicle? ///

Yesterday upon entering my Enclave there was a very strong sweet smell. I thought it might have been a piece of fruit or dessert that fell somewhere and was rotting. However the temperature was -15℃ at the time so I highly doubted it, but began looking anyway and couldn't find anything.

After arriving home I found my Prestone pre-mixed antifreeze and smelled it. It sure seemed similar to the smell in the vehicle, but not a 100% match. I went back to my Enclave and searched all over for a leak within and out and found nothing. I looked in the container and it was low so I filled it, however I haven't filled it since last summer.

Today I still smelled it and took it to a mechanic so they could have a quick smell. He said it's most likely antifreeze, but he's not entirely sure. He said it could be the heater core so come back to get it hoisted and they will look.

There's no loss of heat, the windows don't fog up, and there's no visible leak anywhere.

In the summer when my air conditioning wasn't working the greatest I went under the glove compartment and took the fan apart and found a lot of water inside the bowl. I dumped it and put it back together then found the hose on the drivers side in behind the panel and pulled it out to empty the water in there as well. This helped the air conditioner work a bit better, but I still hear noises from in in the summer. Also, the fan that was once quiet under the glove compartment squeals a lot when the A/C or heater is on.

My questions are:

1) Why does the fan squeal so much now? Did I put it back properly causing the fan to squeal?

2) Why did the bowl and hose fill up with water in the summer?

3) Is the A/C and heater core connected?

4) Does this sound like an antifreeze leak or some other issue?

5)What is the estimated cost of a heater core problem?

My username is Skepticism because I was once skeptical about the Enclave and now think it's the most amazing vehicle I've ever owned. « 2008 CXL Cocoa Metallic (black leather) AWD with every option available and most importantly no wave-plate failure at 160,000km. Still going strong for 2017! »
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post #2 of 32 (permalink) Old 03-07-2017, 09:08 AM
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Re: Strong strange sweet smell within vehicle?

It's very likely your heater core is leaking. The climate control could be pulling the smell inside if you have a leak in the engine compartment but heater core leak is more likely.

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post #3 of 32 (permalink) Old 03-07-2017, 10:26 AM Thread Starter
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Re: Strong strange sweet smell within vehicle?

Quote:
Originally Posted by BadAV
It's very likely your heater core is leaking. The climate control could be pulling the smell inside if you have a leak in the engine compartment but heater core leak is more likely.
The strange thing is that I never smelled anything at all even with the car being heated. It was driven for about an hour, parked for about three hours, then when I went to open the door the inside smelled so horrible. Keep in mind it was -15℃ outside. It has smelled bad for two days, now today it's not as noticeable.

If it is hoisted will they be able to see the leak?

My username is Skepticism because I was once skeptical about the Enclave and now think it's the most amazing vehicle I've ever owned. « 2008 CXL Cocoa Metallic (black leather) AWD with every option available and most importantly no wave-plate failure at 160,000km. Still going strong for 2017! »
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post #4 of 32 (permalink) Old 03-07-2017, 10:56 AM
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Re: Strong strange sweet smell within vehicle?

either the heater core- or a weeping water pump. (could possibly be a leaking hose tied to the cooling/heating system) but the 1st 2 are most likely.


look here-- for spots to look for a weeping water pump

http://www.enclaveforum.net/index.php?topic=9718.0

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post #5 of 32 (permalink) Old 03-07-2017, 01:45 PM Thread Starter
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Re: Strong strange sweet smell within vehicle?

Quote:
Originally Posted by rbarrios
either the heater core- or a weeping water pump. (could possibly be a leaking hose tied to the cooling/heating system) but the 1st 2 are most likely.


look here-- for spots to look for a weeping water pump

http://www.enclaveforum.net/index.php?topic=9718.0
My water pump was replaced a year ago so hopefully it isn't the same issue. If it is then it would fall under the recall category and would have to be replaced again by the dealer. When the water pump was leaking a year ago I never smelled anything inside the vehicle.

I actually remember you telling me this was most likely the cause and you were right.

With my current issue, my guess is the heater core as well. Tomorrow morning it will be hoisted into the air at the mechanic shop so they can have a look.

My username is Skepticism because I was once skeptical about the Enclave and now think it's the most amazing vehicle I've ever owned. « 2008 CXL Cocoa Metallic (black leather) AWD with every option available and most importantly no wave-plate failure at 160,000km. Still going strong for 2017! »
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post #6 of 32 (permalink) Old 03-08-2017, 11:44 AM Thread Starter
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Re: Strong strange sweet smell within vehicle?

The mechanic just let me know it's the evaporator core! He said it's freon that I'm smelling! So while they're repairing that area they want to change the heater core as well as it is a Labour intensive job.

How can freon be leaking when I don't even have the A/C on in the winter...

This is a shocker!

My username is Skepticism because I was once skeptical about the Enclave and now think it's the most amazing vehicle I've ever owned. « 2008 CXL Cocoa Metallic (black leather) AWD with every option available and most importantly no wave-plate failure at 160,000km. Still going strong for 2017! »
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post #7 of 32 (permalink) Old 03-08-2017, 12:40 PM
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Re: Strong strange sweet smell within vehicle?

interesting.


Ive never smelled freon/ or other new type of AC related gases/fluids....

now I know,

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post #8 of 32 (permalink) Old 03-08-2017, 01:30 PM
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Re: Strong strange sweet smell within vehicle?

Hmmmmmmmmmmm. While they are there how nice that they are going to change the heater core. This is a first for a dealer. Maybe it is the antifreeze you smell and they are changing the evaporator while they are there?
Well the A/C does come on if the temperature is high enough, the defroster uses the A/C to defrost the windshield.
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post #9 of 32 (permalink) Old 03-08-2017, 01:55 PM
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Re: Strong strange sweet smell within vehicle?

They are going to have to remove a large part of the dash. My experience is that things are never quite right after that. Very labor intensive and pricy.

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post #10 of 32 (permalink) Old 03-08-2017, 02:41 PM Thread Starter
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Re: Strong strange sweet smell within vehicle?

Okay, I'm going to respond to all the posters who've replied. I've known this dealer for awhile now so I'm hoping they are telling the truth. The smell I'm getting is a mixture of sweet and sour. Sometimes smelling like apple cider vinegar. While I do know that large quantities of Freon in an enclosed space can cause death by asphyxiation, isn't Freon is an odorless gas so it wouldn't smell like anything? Anyhow, the temperature here has steadily been about -20 C with a lot of snow so it isn't warm.

The mechanic said to leave the vehicle there as it's dangerous to be driving around with a freon leak. He still wasn't able to let me know if it was the rear or front, but he said most likely it's the front that needed to be replaced. He said while they are opening everything up since the heater core is staring them in the face they might as well change that because coming back in six months if it does fail won't make me very happy. He said it will be a 10+ hour job where they will remove the steering wheel, dashboard, and seats.

Guess what the quote is? about $2,700! Since I didn't want to keep driving it with my wife and kids in the vehicle I just left it there. They gave me a courtesy vehicle which is a broken down rust bucket Ford with no radio. Now, I still don't know if it's the rear or not, but he said he will give me a shout.

This will be the first time I'm paying this much out of pocket and it hurts...it really hurts.

My username is Skepticism because I was once skeptical about the Enclave and now think it's the most amazing vehicle I've ever owned. « 2008 CXL Cocoa Metallic (black leather) AWD with every option available and most importantly no wave-plate failure at 160,000km. Still going strong for 2017! »
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