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Burning smell when going over 100

Intuit

3000 Post Club
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Location
South West Ohio
#21
Anyone experienced a faint burning smell entering the cabin, like that of plastic, when going 100mph or more?

It's not oil, and I don't see anything burned in the engine bay.
Started smelling this when I hit 120mph, slowed down to 95mph, went away, slowly increased speed to 100-105mph, and started smelling this again.

I have a HUD, warning me if I hit 95mph, so keep it at below this speed for now, until I know where the smell comes from...
Forum search results...
https://www.google.com/search?q=site:fiestastforum.com+plastic+burning+smell

If you have anything non-OEM, such as an oil catch can with plastic parts, that would be the place to start.

As a test, try turning off the HVAC. It is unlikely but check the blower motor wire harness for evidence of overheating. I only suggest this because a prior vehicle had melted its blower wire harness; but that was due to corrosion.
 


OP
M
Messages
107
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8
Location
Vero Beach
Thread Starter #33
I guess I'll just prevent surpassing 100mph from now on.
Just too bad, because at 110-125mph this car is so much fun!
Just a little over the legal speed limit.
 


Messages
1
Likes
0
Location
Berlin
#34
It can be some electric short problem in the car. Sometimes, that kind of smell can also be felt when we use the heater after a long time.
 




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