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Vacume line for vent control

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Vacume line for vent control
Old August 9th, 2020, 11:02 PM   #1
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Vacume line for vent control

It looks like my vacuum line to control which vent my air in the cabin comes out of has become dry rotted. My questions are what size line is this? And, I get another line and I get to the back of the actuator per the service manual, do I need to remove anything under the hood in the engine compartment to snake the new one into where it needs to go? I saw an old thread that led me to the right diagnosis immediatelyClick image for larger version

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ID:	148913. Thanks in advance.
kenny
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Old August 10th, 2020, 07:27 AM   #2
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I think the tubing is 1/8" or 3mm. Mine is quite a bit longer than necessary, so you should still have plenty. Reach up under the cowl panel and see if you can fish out the tube and hook it back up. I'd put the 90* back on the manifold nipple and tuck the vacuum switch out of sight.
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Old August 10th, 2020, 09:24 PM   #3
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Thanks GTS Dean. That advice was money and now I have cols AC in my face!
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Old September 10th, 2020, 05:34 PM   #4
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I have a 90 which would be the same as yours. There are two vacuum lines coming out of the firewall near the h-valve and under the coolant reservoir. Looking at it, the one on the right you should follow very shortly to the heater control valve, which lets the coolant through to the heater core. The one on the left is the control line for the vents, which runs towards the fender, by the PCM and to a vacuum storage canister which is somewhere near the right headlight area. That is the line you want to check, or if it looks okay, the vacuum canister could be leaking.
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