P0442 - heater line leak?

P0442 - heater line leak?

Postby stal023 [OP] » May 30th 2021, 10:02pm

I popped the hood this morning trying to address an AC pressure leak and in that, this hose fell off (see photo issue #1)

If I'm following the diagram correct, this is the heater line. I can pull the line out completely from the rubber boot that is coming from inside the vehicle. How in the world do I fix this?
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PXL_20210530_204419564~2.jpg
Issue #1
images (1).jpeg
Hose diagram
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Re: P0442 - heater line leak?

Postby MI_Ghost » June 4th 2021, 4:34pm

You will need a length of 1/8" vacuum hose to replace it. It will connect to the rear heater switch.
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Re: P0442 - heater line leak?

Postby stal023 [OP] » June 4th 2021, 5:50pm

Can I remove that rubber housing that surrounds the 2 hoses that go inside the van?
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Re: P0442 - heater line leak?

Postby MI_Ghost » June 4th 2021, 9:07pm

stal023 wrote:Can I remove that rubber housing that surrounds the 2 hoses that go inside the van?
That is a protective sleeve to keep the hoses from being cut on the sheet metal. You should be able to shove the new hose through it.
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Re: P0442 - heater line leak?

Postby AstroWill » June 6th 2021, 5:31am

stal023 wrote:Can I remove that rubber housing that surrounds the 2 hoses that go inside the van?

You could but I would leave it in place.

Someone had butchered the vacuum lines on BB, had to replace the one that crosses the engine while on the road, A/C was stuck blowing to the floor. 2ft of 7/32 or 5.5mm vacuum hose(PN: 50211) and I stuck the vacuum check valve/tee directly into that rubber housing, firm fit and good to go.
Might do something different later, but if it's working, then it's already fixed ;)

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Re: P0442 - heater line leak?

Postby stal023 [OP] » June 8th 2021, 1:57am

The leak is coming from inside of that as the hose came out of that rubber piece. I shoved it back in and then the check engine light came on after that. So....I need a better repair than just shoving the hose up into that rubber piece. Suggestions?
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Re: P0442 - heater line leak?

Postby AstroWill » June 8th 2021, 2:07am

That isn't going to be the root cause of your code.

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Re: P0442 - heater line leak?

Postby stal023 [OP] » June 10th 2021, 2:18pm

What is?
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Re: P0442 - heater line leak?

Postby AstroWill » June 10th 2021, 9:51pm

stal023 wrote:What is?


Most of the time it's a leak in the EVAP system. Leaking fuel cap, filler hose/line, tank, hose, charcoal canister connections, purge valve, etc.

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Re: P0442 - heater line leak?

Postby stal023 [OP] » June 22nd 2021, 4:15pm

Where does begin to troubleshoot this?
Original Poster [OP]
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Re: P0442 - heater line leak?

Postby AstroOafAdventurer » June 22nd 2021, 5:02pm

I just recently got the P0442 as well. I'm replacing the purge and vent solenoids.
However, after clearing the code it hasn't come back, but I've only gone for a 25 minute drive since.
You can always change the gas cap as well, easiest step to do.
https://smile.amazon.com/gp/product/B00 ... UTF8&psc=1
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Re: P0442 - heater line leak?

Postby stal023 [OP] » June 22nd 2021, 5:16pm

I just went out and ran all these hose lines and I'm certainly confused. According to the diagram I originally posted, my lines don't match up. My red is correct and my purple is correct. However, there is NO hose connected to the heater valve yet I have heat.

In this diagram, the orange line is supposed to connect to the heater valve. Mine connects to the vacuum canister and it is a smaller, rigid hose compared to all the rest. This is the line that was accidentally taken out of the rubber boot that feeds inside the van (when all my troubles began!)

So...now what? I also see no way to attach a hose to the bottom of the heater valve. I've tried from above and below with no luck!
Attachments
PXL_20210622_160454563~2.jpg
PXL_20210622_155644607~2.jpg
Original Poster [OP]
stal023
Fueling (7/8 tank)
Fueling (7/8 tank)
Years of Membership: stal023 has been a member for 3 full yearsstal023 has been a member for 3 full yearsstal023 has been a member for 3 full years
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Re: P0442 - heater line leak?

Postby stal023 [OP] » June 22nd 2021, 5:33pm

AstroOafAdventurer wrote:I just recently got the P0442 as well. I'm replacing the purge and vent solenoids.
However, after clearing the code it hasn't come back, but I've only gone for a 25 minute drive since.
You can always change the gas cap as well, easiest step to do.
https://smile.amazon.com/gp/product/B00 ... UTF8&psc=1

To locate this, do you have to take the doghouse off?
Original Poster [OP]
stal023
Fueling (7/8 tank)
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Re: P0442 - heater line leak?

Postby AstroOafAdventurer » June 22nd 2021, 6:55pm

stal023 wrote:
AstroOafAdventurer wrote:I just recently got the P0442 as well. I'm replacing the purge and vent solenoids.
However, after clearing the code it hasn't come back, but I've only gone for a 25 minute drive since.
You can always change the gas cap as well, easiest step to do.
https://smile.amazon.com/gp/product/B00 ... UTF8&psc=1

To locate this, do you have to take the doghouse off?


From my understanding yes, or at least it's easier that way.
I'll most likely do it this weekend along with replacing my AC compressor.
I hate removing the doghouse...
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