1997 wont blow out the center a/c vents, WHY?
#41
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to really confuse you more, check the junction box on the firewall, you will notice a black wire, this wire is connected to the Y in the vacuum line, YES it is a vacuum line and not an electric wire, it is the feeding line for the purple line going into that junction box.
#42
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Re: HVAC thingy
Originally Posted by nick *
Originally Posted by Echo SSEI
Originally Posted by james tharp
Ok all,
i thought maybe I was wrong, however there are absolutly no vacuum lines coming from the back of my hvac unit in the dash. None... there are six wires. I have pictures but am still learning how to let yu see them.
i thought maybe I was wrong, however there are absolutly no vacuum lines coming from the back of my hvac unit in the dash. None... there are six wires. I have pictures but am still learning how to let yu see them.
This is the location of the vacuum Y connector behind the passenger'* shock tower. There are two grommets under the plastic cover that extends from the master cylinder to the passenger'* shock tower. You must remove this cover to see them. The correct grommet is the one that is closer to the fender.
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#44
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Re: HVAC thingy
Originally Posted by randman1
James is looking at the back of the ECC control head, not the HVAC programmer.
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Originally Posted by randman1
You can also start the car and listen very closely to the inside of the glovebox. The black to purple connection is there. Listen for a hissing sound.
#46
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Originally Posted by Echo SSEI
Originally Posted by randman1
You can also start the car and listen very closely to the inside of the glovebox. The black to purple connection is there. Listen for a hissing sound.
#47
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Yep, a hissing sound isn't a good thing.
From what I remember, the black to purple vacuum line connection was pretty sturdy and didn't come apart too easily. This could be good news as it'* more likely that the leak is elsewhere and hopefully will eliminate the need to remove the dash. I'd start by removing the passenger'* hush panel and inspecting the lines in and out of the programmer. If the hissing is present when the ECC is turned off, the source (purple) line would be the problem. If the hissing is present while the ECC is on and in certain air flow modes, it will be one of the other colored lines or the diaphragms. I know you can see and reach at least one of the diaphragms from the driver'* side underdash.
From what I remember, the black to purple vacuum line connection was pretty sturdy and didn't come apart too easily. This could be good news as it'* more likely that the leak is elsewhere and hopefully will eliminate the need to remove the dash. I'd start by removing the passenger'* hush panel and inspecting the lines in and out of the programmer. If the hissing is present when the ECC is turned off, the source (purple) line would be the problem. If the hissing is present while the ECC is on and in certain air flow modes, it will be one of the other colored lines or the diaphragms. I know you can see and reach at least one of the diaphragms from the driver'* side underdash.
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#49
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