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Old 02-12-2018, 01:15 PM   #1
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E450 V10 What is this tube for

2006 Forsest River Lexington E450, V10.

Mice got into the engine compartment and ate through this red plastic tube and I can't find out where it goes or what its too. Any Idea's ???

Looks like it runs along the back of the engine compartment and the black part goes towards the passengers side fender near a heater fan but I can't tell where it ends up or where it started from.

See attached pictures.
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Old 02-12-2018, 01:21 PM   #2
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Looks like the vacuum line that feeds the HVAC. Look for the other chewed end probably near the intake manifold on the engine.
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Old 02-12-2018, 05:44 PM   #3
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Found this once I got the engine cover off. Got the mechanic coming to repair it in the next day or two. Fortunately it looks like my mouse likes the color red because that"s the only line he bit on the engine. But he did also destroy the electric cord going to the trickle charger too.

Glad I didn't wait until the day before our trip to check everything.
see attached.

Sorry but I don't know why it rotates my pictures and I don''t know how to fix it.
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Old 02-12-2018, 07:17 PM   #4
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Yup, that's the upper intake plenum (black plastic with other hoses attached).
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Old 02-13-2018, 02:17 PM   #5
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Just go to autozone and get some vacuum line and splice it together and save the repair bill.
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Old 02-13-2018, 02:23 PM   #6
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Quote:
Originally Posted by aquenichet View Post
Just go to autozone and get some vacuum line and splice it together and save the repair bill.
Don't know where they all plug into. one rubber plug has two red lines coming out and another one only has one hose coming out of it. Then there is one under the hood that plugs into a black line with a connector of some sort running towards the passengers fenders.

All of these are shown in the pictures.
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Old 02-13-2018, 02:34 PM   #7
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My Forester V-10 had the same tube attacked by a rat. Like corn in our fuel, modern automotive insulation is made from various food. Older units normally dont have this issue.
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Old 02-14-2018, 10:16 AM   #8
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The rats eating wiring is not new. I was at the dealer 2 years ago and they were rewiring a HM that had been stored over the winter and the rats had eat engine and house wiring. The MH was early 70s model.

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Old 02-14-2018, 02:41 PM   #9
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Had a mobile mechanic come out and only charged me $70. Plus he also checked the battery and alternator and a few other things. He bought the vacuum line at the auto parts store and he knew which lines went where.

He showed me an easier way to take the engine cover off. He said you're supposed to remove the plastic panel under the steering wheel that butts into the side of the engine cover. Apparently it just snaps in. With that removed its a whole lot easier to remove the engine cover. Not that I plan on doing that again.
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Old 02-15-2018, 11:03 AM   #10
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Red lines are full manifold vacuum so just splice the missing sections together and make sure your HVAC all works correctly. Most of the doors on the case under the dash are probably operated by vacuum actuators.
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