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bomarhe's avatar
bomarhe
Explorer
Dec 11, 2013

no heat from front vents

Hi, I have a 99 Endeavor DP which we recently purchased with a heater/blower problem. In colder weather, say below 50F, I get no or little warm air coming from the vents. After parking at a rest area for a few minutes, it works fine for about the first 15 minutes then progressively slows down to practically no air flow. The blower seems to have only one speed, high(when it works), then slows to a trickle after being on for a while. Even while setting without the engine running, it only has off and high. Sure gets cold in there at about 40 degrees. I'm thinking thermostat for the low heat output and a bad switch for the blower problem. Additionally, the defrost/defog has no air flow at all, makes for an adventure in cold wet weather. Any suggestions from those with experience with a similar problem?

Second question, how does one get rid of a foul smell in the freezer? Had a power failure with stuff in the freezer for about 2 weeks, suggestions?

Thank you in advance for any help.:?
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19 Replies

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  • bomarhe's avatar
    bomarhe
    Explorer
    Dec 11, 2013
    I will look at all items suggested. I tried the baking soda, no luck, I'll keep trying everything else. Got lots of good things to look at for the heater problem. The vacuum and the resistor sound like good suspects. I'll keep you all posted. Thanks for the help. Great forum!
    Bob
  • Sloop_Smitten's avatar
    Sloop_Smitten
    Explorer
    Dec 11, 2013
    If you can find the electrical connection to the blower pull it off and inspect it. The connector attaches to a blower resistor module which can fail. Inspect the connector for any burned marks. If they are apparent you can try and clean the connector as a short time fix but the log term fix is to replace the resistor module and maybe the connector as well if it is exceptionally damaged. The last time I had this problem I was able to purchase both as a kit at Rockauto.com.
  • the_bear_II's avatar
    the_bear_II
    Explorer
    Dec 11, 2013
    I had a blower motor that wore out...Sometimes it would work fine but then slow down and eventually it stopped.... I replaced the bllower motor and the problem was solved.
  • wny_pat1's avatar
    wny_pat1
    Explorer
    Dec 11, 2013
    MountainAir05 wrote:
    A lot of things to check, water flow into and out of the heater, the motor it self, the gate valves. The vacuum pump and hoses.
    Generally speaking, in order for diesels to have vacuum, they need a vacuum pump. It is often electric and found in the front with the AC components. If it is not operating, many pick up one for a Ford Pickup diesel at Napa.
  • Dyngbld's avatar
    Dyngbld
    Explorer
    Dec 11, 2013
    Sounds like you have a couple of problems, I will say I know nothing about DPs, but I had a similar problem in my truck i regards to the no air with the defroster. Mine was a vacuum line to the diverter that changes the air flow from blowing out the lower, middle, or top vents. I believe the same line also open the diverter that bypasses the heater core.

    As for the fridge smell, a good cleaning and let it air out. Baking soda works well.
  • MountainAir05's avatar
    MountainAir05
    Explorer II
    Dec 11, 2013
    On the freezer, try, Vinegar with baking soda. If that does work, simple green full strength in a bowl. Wipe down the inside with it also. this has worked for us. Am sure there are others who will chime in.

    A lot of things to check, water flow into and out of the heater, the motor it self, the gate valves. The vacuum pump and hoses.
  • JimM68's avatar
    JimM68
    Explorer
    Dec 11, 2013
    The coach heat/a-c is a separate unit, located in the front, ahead of the passenger dash, next to the genny. It gets electrical inputs from the dash heatercontrol, and also gets hot water from the engine as well as freon from the engine mounted compressor.

    These units typically have a fan resister mounted in the ductwork that provide all fan speeds other than high.
    They will have an engine water hose running in and out. the in hose has a solenoid valve in it, so when you are not asking for heat, the unit doesn't have to deal with it.

    Check the water hoses, the larger should be hot the other not so much. The solenoid valve will be within sight.
  • OhhWell's avatar
    OhhWell
    Explorer
    Dec 11, 2013
    Clean the heck out of the freezer walls and put some baking powder in there if for some reason the smell persists.

    Sorry but can't help on your other issue but just to clarify, are you saying that the temperature of the air stays constant but the volume drops to just about nothing?

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