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Old 03-23-2020, 07:44 PM   #1
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Ford E450 hot floor issue

The passenger side floorboard gets very hot on long rides (common problem) had anyone tried wrapping the exhaust pipe on that side to prevent the floor from being too hot? I have already put heat barrier under the carpet on that side which has helped a lot. Is there any bad side effects from wrapping the exhaust?
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Old 03-23-2020, 09:32 PM   #2
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You can get some really good exhaust insulation made for wrapping turbos.

I wouldn't wrap the manifold because it will overheat and crack, but exhaust pipe will be fine. It can stand the expansion and contraction much better than cast iron.

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Old 03-23-2020, 09:54 PM   #3
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Had a 1999 E450 Minnie Winnie with the same issue, I took out the seats, pulled up the carpet, and put down a foil backed fiber heat barrier and lined the engine cover with the same material. This helped a bunch.

The problem is the exhaust manifold is vert close to the floor pan. What also helped was replacing the stock manifolds with Banks headers.

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Old 03-24-2020, 06:24 PM   #4
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I have a low miles 2007 E450 that is bone stock, I have a full heat shield under the passenger floorboard running along side of the transmission, floor never gets hot, just warm in 105f degree heat, even climbing mountains, maybe ford deleted the heat shield in latter years ?
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Old 03-24-2020, 07:43 PM   #5
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I had the same issue

I had heat from the passenger side floor was was quite noticeable. Heat from the doghouse was not the issue. I removed the DS seat and carpet along with the doghouse and applied foil backed insulation to the interior floorboard as well as some portions under the floorboard, in the vicinity of the exhaust piping, from above thru the doghouse opening. I used the methods and material from the "RV with Tito" video that he did on the subject.

.

Title is Fix the HOT Floor Problem in Your Gas RV, if you need to search for it.

I also cut a "pad or mat" from a foam play/exercise mat that I already had that fills the area bounded by the 2 seats, the dog house and the step up to the coach floor. I am happy with the improvement from minimal cost and effort expended.

Good Luck
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Old 03-25-2020, 01:05 AM   #6
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As I have read about this many times over past 3-yrs, I have CONCERN that there is a cause most overlook, (but could be wrong); however MY RIG (99-class-c w/ 6.8/ V-10) has NOT generated this complaint from DW, nor me when she was driving, in heavy driving, city or mountains under heavy load/ steep incline. Fear/ suspicion is that ENGINE MISS/ excess fuel in EXH is the cause, despite no codes/ no SES. This, in my mind/ experience, could also cause the broken EX Manifold bolts that I also read as common? (TRUE Tale) I worked on a carb engine car once that was missing, found plastic PCV snapped in half in VC sucking too much air; replaced PCV, started engine, and had EX manifold turn INSTANTLY INTO GLOWING RED and start FIRE at firewall where VC leak was putting oil onto the crossover. After killing fire w/ FExt, I replaced Float needle/ seat in carb causing the FLOODING.
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Old 03-25-2020, 06:36 AM   #7
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I have watched the video from RV with Tito, which is where I got the brand of heat shield material that I used under the carpet. I didnt use it under the cab floor because i wasn't sure about the longevity due to exposure to the elements etc.. I have looked at maybe other types of heat shields from Thermo Guard that clamp onto the exhaust pipe which looks good. My 2006 ford doesn't have that factory heat shields that your 2007 does. I wish it did. And maybe something I can buy and retrofit to mine
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Old 03-25-2020, 07:17 AM   #8
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Oh, and on a sort of different topic, why does the vent setting on these e450s always blow warm air? Just cause everything is heat soaked under the dash? The AC works great but not the outside air vent setting
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Old 03-26-2020, 12:54 PM   #9
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Oh, and on a sort of different topic, why does the vent setting on these e450s always blow warm air? Just cause everything is heat soaked under the dash? The AC works great but not the outside air vent setting
Mine vent when on always puts out warm air. Was thinking about putting a shut off valve in the heater line but I'd be interested if someone has a better suggestion.
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Old 03-26-2020, 05:20 PM   #10
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It's because the heater/ a/c box is under the hood behind the battery, stays warm all the time, shutoff valve for hot water will do no good, just run the a/c no difference in mpg.
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Mine vent when on always puts out warm air. Was thinking about putting a shut off valve in the heater line but I'd be interested if someone has a better suggestion.
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Old 03-27-2020, 06:59 PM   #11
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Vent setting does turn A/c off, where MAX cool CLOSES VENT and records w/ a/c= ON.
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