Take a magnet and check the metal trim that joins the cab to the cab over on the outside. If the magnet sticks, its steel and you need to run fast and don't look back, you will find rust stains somewhere. Many '06 models have had the part changed out for the aluminum replacement, which Winnebago used to give to the owners. They now sell it for $1500 or so I am told. '07 Views (on '06 chasssis) should have the aluminum trim piece. The part is difficult to change out and unless you are a severe DIY person with a shop to accommodate the View, you probably won't want to get involved.
Ask if the charge/Boost solenoid has been replaced, and if so, with what. It is in the floor, between the seats. You have to open the door and unscrew a panel to access the electrical box. silver colored solenoid to the passengers side, rear wall of the box. Three terminals (two large and a small) indicate the original relay/solenoid, which probably works but doesn't pass current. Four terminals with a ground wire from a small one to the mounting bolt is most likely a Cole-Hersee 23214 which is the common and better replacement. You can test by taking a volt meter and measuring under hood battery voltage with engine running, then measure under step coach battery voltage also with engine running. If they are more than a tenth of a volt apart, the relay is most likely bad. No shore power while doing this.
Open the cover on the electrical box in the shore cord compartment, are the connections burned? very common.
Has the turbo resonator on the engine been replaced with an aluminum eliminator tube? or the resonator being either a Dorman replacement or a 4 gen Mercedes replacement?
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Resonator is mounted directly to the outlet of the turbo on the passenger side of the engine toward the front.
When, how often has the transmission fluid been changed and was the torque converter drained also?
Has the original power converter in the bottom of the breaker and fuse box under the fridge, been replaced with a Progressive Dynamics unit? If not, the old Parallax unit will cook the batteries and also is known to burn up.
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Tons of other things to mention. I suggest joining the View/Navion forums. There is one on Facebook (I don't do facebook so never been to it) and there is one (actually 3) on Yahoo (which I have been on alot)
Basic forum
https://groups.yahoo.com/neo/groups/View-Navion/info
Tech Forum
https://groups.yahoo.com/neo/groups/...avionTech/info
Mods forum, very valuable for the photos.
https://groups.yahoo.com/neo/groups/ViewNavionMods/info
Yahoo is quirky and requires you join and the forum system is the old BBS system from 1990 and is frustrating to use, but the information and people are invaluable assets. Best done with a laptop or desktop computer, works poorly on a portable device.
Charles