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Horrible smell coming through the heater fan it stopped working recently but even though they 'fixed it' it only really works at the higher settings but the smell comes every so often almost like a gas what could be wrong?

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: idle low then hi, and gas smell, and bad gas mileage

This should show up easily on the ECU diagnostics computer at a mercedes dealership. Basically your fuel mixture is way too rich causing your car to be heavy on gas, have a raw gasoline smell, and not run right. Something like this can be caused by a defective oxygen sensor (but that usually produces a check engine light) or it might even be a defective ECU. There is really not way of knowing for sure until you do a proper diagnostics where they hook up your exhaust at the same time and do an emmission test. In most cases it's some sensor that needs replacing.

Posted on Aug 28, 2008

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SOURCE: Bad smell coming from heater/ smoke coming out vents

I had the same problem in my 98 Dodge Dakota! Replaced the heater core, problem solved. No more funky coolant smell and erie fog coming through my vents. I bought the heater core at rockauto.com online. Have purchased many items now from them. All factory parts so far at half the price of even AutoZone, even with the shipping. Also, you usually have to wait only a couple of days depending on the part and they have EVERYTHING.

Posted on Dec 25, 2008

  • 19 Answers

SOURCE: Jeep TJ Heater Fan Repair

blower motor resister has burnt out also check wiring going to your blower motor resistor these must have a good tight connection or they will burn if any sighns of being hot change the complete wiring pig tail to your blower resistor

Posted on Sep 19, 2009

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SOURCE: strong gas smell coming from my cobalt at all times

Look in the back of the car. The fuel pump lines like to break. You will not be able to see them, but you will smell and see that the fuel tank is wet. Call your local dealership, have you vin # and milage, ask them if it's covered by warrenty.

Posted on Oct 18, 2009

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SOURCE: 2001 New Beetle A/C fan noise

I think it is the cabin/ pollen filter. The noise is louder on normal AC operation cos thats when the air is being pulled in through the filter and the sound decreases with recirculate because the filter only functions for outside air.
Need to use a credit card or similar to seperate and move the upper dash centre piece towards windscreen, it clips off. Then open the 3 x torx screws and lift the dash on the passenger side. then remove the plastic cover (oddly shaped) it has about 7 screws, then twist and remove, it requires some real effort, then pollen filter is visible. replace filter and voila! it would make your AC perform like a new car again!!
Hope it helps, Yusuf Johannesburg-South Africa yusuf.ginnah@poynting.co.za

Posted on Mar 05, 2010

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I have a 2006 dodge grand caravan that is leaking either power steering or antifreeze. The power steering is full but there was redish orange liquid leaking. The antifreeze is low and a horrible smell...


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The heater in my 2000 blazer quit working it was working just fine no nothing is running no fan no cool air just silence


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Overheating jeep & intermitant hot & cold air when heaters on ful


Hi, could be a blocked heater coil. Though I doubt it.

Some more info would be helpfull, but i'll try to give some help.

firstly, is the fan clutch working? it;ll look as though it is, and still spin the fan, but if you stand near the engine with the engine running and hood open and don't feel a force of air blowing out of the engine bay then the fan clutch could be weak. A way to test this is to very carefully and slowly try to stop the fan turning using a broom handle. if the fan clutch is working, then it;ll just kick the broom handle out of the way. you won't be able to stop it. If it isn't working, you'll be able to continue to place the broom handle and the fan will stop turning. as simple as that. If the fan clutch is faulty, you're engine will overheat. Especially at stop lights, parked with the engine running, and it'll kick out your coolant when you turn the engine off after it's hot.

secondly, if fan clutch ok, turn air con off and run engine. then turn air con on and see if the electric fan comes on immediately. With air con on, the electric fan should come on straight away. If not, the electric fan is faulty, and this could be a fuse, relay, or switch, or even the fan itself.

thirdly, if this is only occuring when you run at constant speed, and not at idle after a while, then there's a blockage in the coolant circulation. The radiator may need flushing, or the hose is getting kinked. Under vacuum, the hose can collapse and stop the circulation making the engine overheat as it gets hotter at high rev. sometimes, there are coils in the hoses to prevent this, and you may be missing one or two. These are usually at elbows where the hose connects to the engine, radiator.

Lastly, head gasket or crack in the head. check the spark plugs. If they look too clean, like they've been steamed clean, then you may have coolant leaking into the combustion chamber. At higher revs, this will cause heat and pressure buidup in the coolant system, eventually leading to overheating at speed. The crack/leak may only become more prevalent at higher revs, thus higher pressure. Even the slightest/smallest leak can cause this problem at speed but not at idle.

Good luck. Check the components first. Make sure the fans are working, then check the hoses for coils, and then the spark plugs. spark plugs should have a little carbon buildup. If it's the crack or gasket, then the plugs will look too clean. It may only be one plug/cylinder, so check them all.

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