Problem with headache-causing smell in Volvo FM trucks

Discussion in 'Questions From New Drivers' started by truckosauros, Sep 30, 2010.

  1. truckosauros

    truckosauros Bobtail Member

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    Sep 30, 2010
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    Hello

    I have a problem. I work as a local distribution truck driver, but for some reason i keep getting a headache from an unidentified smell that enters the cabin. The smell is best described as somewhat similar of burned plastics. I have tried changning truc to another one of the same model and brand, to see if the problem was with the truck, but it stays in the other car aswell.

    The trucks in question is volvo FM, relativitely new, built around 2005. The problem occurs mostly in city traffic, and i have long suspected that it is related to exhaust gases entering the cabin. None of the cars have exhaust leaks though (checked in the repair shop), however the exhaust outlet is situated quite close to the cabin:

    [​IMG]

    The truck in the picture is more or less the same as i drive.

    The exhaust gases seems to enter the cabin whenever i'm at a standstill, for example in congested traffic. I can smell the "usual" exhaust diesel gas, but also a smell similar to burned plastics, that doesn't want to go away. Of course you could close the windows and put the a/c on recirculation, this hinders the exhaust gases from entering the cabin, however it doesn't stop the burned plastics smell altogether (alltough it is reduced)

    The a/c inlet is placed under the hood in front, right above the engine more or less. Is there a way to get the air through another opening? There is two air inlets situated above the hood as marked in the picture. Where do they go? Is it possible to get the air in from there?

    [​IMG]

    Need help with this problem. Any other distribution driver out there driving these volvos experiencing the same problems? I don't want to have to quit my job on account on a thing like this.

    I haven't driven much other brands, is the problems there aswell?
     
    lupe Thanks this.
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  3. American-Trucker

    American-Trucker Road Train Member

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    I can only think of 2 things, If it only happens in traffic it could be you burning the clutch that you smell, or it being a Volvo you could have a electronic problem melting a wire somewhere lol


    American Trucker
     
  4. Palazon

    Palazon Road Train Member

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    My Shaker had an exhaust leak under the cab. It was worst in the city or idleing for sleep. Gave me headaches, queasy stomach, and strangely made me extremely short tempered.... not a good thing on an ex-GI.:biggrin_25523:

    Seriously, I'd get that exhaust looked at, PDQ.

    And A-T is right, every Volvo I've been in has been prone to electrical problems.
     
  5. lilillill

    lilillill Sarcasm... it's not just for breakfast

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    I drive a VNL670 and every time I've noticed a burning plastic smell, it has been from one of two places:

    1) The headlight wiring harness has to be replaced about once every six months. The connector on the headlight itself gets too hot and eventually melts causing a poor connection and self destruction. Probably sucks the fumes in from the fresh air vent.

    2) Same deal for the front blower motor connector... poor connection... gets hot... melts. (Once actually started on fire)
     
  6. grimesjm1

    grimesjm1 Medium Load Member

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    Nov 5, 2008
    Kensington,OH
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    Alright dont wanna hijack thread, but real quick here....
    Your headlights get dim when this connector goes bad? My headlights are so dim that i run around with the brights on all the time at night. No one has ever flashed me back so it's not blinding anyone, and they look like low beams. A possible permanent solution to this could by those hid lights, they burn way cooler then halogens...just a thought, havent had to time to look into it but im off for a few weeks so i wanna address this issue. thanks!
     
  7. Rerun8963

    Rerun8963 Road Train Member

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    given that many headlight housings are made of plastic, it might NOT be the wiring, but the headlight housing giving off the vapors of plastic.

    something called "off-gassing".........(no comments from the peanut gallery now) is done by the interior of many vehicles due to the amount of plastics inside. from the floor mats, to seats, dashboard, ac/heater plenum, all contribute to off-gassing of the plastics, so much so, you will actually get a ""film" on the inside of your windows, that would 'mimic" a smokers window............

    my opinion is that by this time, if it were a wire burning, that by now, the vehicle would have gone up in [​IMG]
     
  8. lilillill

    lilillill Sarcasm... it's not just for breakfast

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    I can't quote messages on this Crackberry... In reply to grimesjm1:

    Yes, the lights will get dim for a short time, then they just stop working altogether. I carry a spare headlight harness for this reason. More likely the cause of your dim lights is because the plastic lenses are fogged. Have them polished out and see if that helps. Then keep them polished by cleaning them with liquid auto wax once a week.
     
    grimesjm1 Thanks this.
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