10
votes
Accepted
Purpose of small forward-facing deflectors in front of rear wheels
These are called wheel flaps or sometimes wheel spats and on some cars you see them on the front wheels too.
The purpose is just as you have noted, aerodynamics. The leading edge of the tires is a ...
- 12.1k
9
votes
Accepted
2005 Chevrolet Express 3500: Help Identifying this part
That should be the coolant temperature sensor and wires. I can't tell exactly where it is in relationship to the head/exhaust, but if it is the temp sensor, it will be located to the upper left ...
- 153k
4
votes
Accepted
Misterious (for me!) box under the car, on the back - Sentra 2010 (b16)
That's the evap canister. It contains charcoal to absorb fumes from your gas tank and reduce air pollution.
You can see another view of it here: https://www.youtube.com/watch?v=5m2aHdW1EqM
- 5,510
3
votes
Accepted
What the hell is this part that fell off my car?
Update: it was from the jack! The shaft in the picture was being held on by one snap ring on each side. Since posting the question, I found another one just like the first. I am hoping they were just ...
- 141
3
votes
Can someone tell me what this is?
That will be the ambient temperature sensor. It is used by the air conditioning system.
KIA’s description from the weblink -
Kia Optima: Air Conditioning System / Ambient Temperature Sensor
The ...
- 24.9k
2
votes
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Identify control knob with transmission-looking symbols in a MAN snow bus
While this MAN video doesn't go into a complete description for the switch you're talking about, it does give enough information for a different model to give you an answer.
This switch does control ...
- 153k
2
votes
Accepted
What is the name of this part/piece on a 2015 continental gt speed convertible 2-door coupe?
Air duct / air duct guide / winglet
Part number 3W8 071 612 A (right). 3W8 071 612 (Left)
- 71
2
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What the hell is this part that fell off my car?
What it is is a snap ring. I have no clue where it would have fallen off of, so your guess is as good as mine. Snap rings are usually enclosed within places, like to hold bearings in place. It would ...
- 153k
1
vote
What is this dashboard/windshield accessory on Columbo's car?
This photo may explain why it was fitted if it is not standard -
I got the photo from this website.
- 24.9k
1
vote
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What could this green box be in the engine bay of Renault Megane 1.5 dci diesel?
Since I don't see a battery in your engine compartment and the mystery object is right next to the fuse box, I think you'll find the battery under the cover. Probably to keep the battery terminals ...
- 5,510
1
vote
Accepted
What does a throttle valve actuator do in carburetors?
The carburetor you have an image of is a Quadrajet carb. What you have circled is the choke vacuum diaphram. There is also an electric version of this. It (as the name implies) is an automatic ...
- 153k
1
vote
Accepted
What is this orange button below the steering on a Mazda?
It looks a LOT like the attached photo, which is purportedly a switch which allows you to turn on a TV while driving. This would be part of an aftermarket AV system or an add-on for your current ...
- 153k
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