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?
Attachments
PXL_20210530_204419564~2.jpg
Issue #1
images (1).jpeg
Hose diagram
images (1).jpeg (16.21 KiB) Viewed 166 times
Original Poster [OP]
stal023
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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?
Original Poster [OP]
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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?
Original Poster [OP]
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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?
Original Poster [OP]
stal023
Fueling (3/4 tank)
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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
Posts: 81
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Van Model Year: 2004
Van Make/Model: Chevrolet Astro
Extra Info: AWD

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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