There's a few things it could be.
Could you describe the smell more?
If it's a rotten egg smell, then it's your battery being overcharged. You'll most likely need to replace both the alternator, and the battery itself. I'm currently having this problem, and it's EXTREMELY dangerous. The battery could potentially explode at any time because of the leaking sulfuric acid. The way to check this is by looking at the top of the battery. See if any of it is a metallic blue, or if you can see wet streaks on it. Also use an amperage meter to see how many volts you're actually getting.
If it's more of a maple-syrup type smell, you should have your heater-core checked out. It could be leaking coolant behind your dashboard, resulting in that smell. To my knowledge, the only way to check for this is to physically remove the dash.
If it's just a musty smell, then it's mold in the vents from sitting. Just pop the dents out and febreeze the fuck out of the pipping.
You should also check your catalytic converter, there could be a leak coming from there, or there could be no heat shield and it's burning the adhesive on the carpet.
Could you describe the smell more?
If it's a rotten egg smell, then it's your battery being overcharged. You'll most likely need to replace both the alternator, and the battery itself. I'm currently having this problem, and it's EXTREMELY dangerous. The battery could potentially explode at any time because of the leaking sulfuric acid. The way to check this is by looking at the top of the battery. See if any of it is a metallic blue, or if you can see wet streaks on it. Also use an amperage meter to see how many volts you're actually getting.
If it's more of a maple-syrup type smell, you should have your heater-core checked out. It could be leaking coolant behind your dashboard, resulting in that smell. To my knowledge, the only way to check for this is to physically remove the dash.
If it's just a musty smell, then it's mold in the vents from sitting. Just pop the dents out and febreeze the fuck out of the pipping.
You should also check your catalytic converter, there could be a leak coming from there, or there could be no heat shield and it's burning the adhesive on the carpet.
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