If your Jeep has a burning smell but the temperature gauge is reading normally, the heat is not coming from your engine coolant system. It is likely coming from your brakes, a dragging brake caliper, the clutch (on manual transmission models), or an electrical component. A burning smell not tied to engine overheating is easy to dismiss. Still, it is worth identifying because most causes involve something getting hotter than it should, which can lead to a safety issue.
Common Causes of Burning Odors
A burning brake smell, often described as a sharp, acrid odor similar to burning rubber or hot metal, is the most common cause in this situation. It can come from a dragging caliper, aggressive downhill braking, or new brake pads that are bedding in. If the smell occurs during or after driving and is accompanied by any pull to one side or a hot wheel, a caliper drag is likely.
A sweet burning smell can indicate that a non-coolant fluid, power steering fluid, transmission fluid, or oil, is dripping onto a hot exhaust surface. These do not affect the temperature gauge because your engine coolant is fine, but they can indicate a leak that needs attention.
A burning plastic or electrical smell points to a wiring issue, a failing electrical component, or debris, such as a plastic bag, caught against the exhaust.
If the smell is intermittent and you cannot easily identify it, note when it occurs, at highway speed, at low speed, during braking, or at a stop, as that will help our technicians narrow it down significantly.
The technicians at Hoover Street Auto Repair in Ann Arbor can track down burning smells efficiently and let you know exactly what is going on with your Jeep.