A car is a wheeled, self-propelled vehicle. Normally, a car has 4 wheels and is designed for the transport of passengers. Depending upon locale, cars may also be called 'autos.'

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2answers
1k views

How exactly does a differential work?

I understand that the differential (or "diff") is the thing that allows the drive shaft to transfer its rotational velocity to the front or rear axle in order to move the car. As far as I know, the ...
10
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3answers
390 views

What exactly is a catalytic converter and why does it need to operate within a certain range?

I heard here that a catalytic converter needs to operate within a certain "chemical range" otherwise it will generate unnecessary heat. What exactly is a catalytic converter? How does it work? What ...
1
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1answer
75 views

Water Powered Cars - What are these things?

Whilst looking up the answer to another question using Google regarding the water output from a normal internal combusted engine powered car, I noticed that - to my surprise - all the top hits were ...
3
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1answer
56 views

1995 Mercury Grand Marquis, loud whine corresponding to engine revving

My '95 Grand Marquis (or as I like to call it, a Grandma Rquis) is suddenly very loud. There doesn't seem to be any issue with the performance, and when it's idling, it's as quiet as can be. I'm ...
6
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1answer
67 views

What exactly is meant by the phrase “plugging in your engine”?

I have found a relevant quote from here that might be related: Plugged-in engines are already half-warmed when started. Fuel consumption is thus reduced by an average of 15 per cent over the first ...
6
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1answer
181 views

Alternative fuel consumption metric to MPG to measure actual engine efficiency?

MPG is all very well and good, considering that most people that are concerned about their fuel consumption tend to want to get as many miles as they can out of it before they need to fill up again. ...
9
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3answers
1k views

Why does my RPM drop when sitting idle at traffic lights?

While I'm sitting idle at traffic lights I put the car into neutral. The engine stays idling at about 1000 RPM. However every now and then it drops down to about 500 RPM and then quickly back up to ...
6
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1answer
100 views

Why is my car so icy in the winter?

The car is a 2004 VW Passat B5.5. The last few days have been colder than usual where I live (below 0 degrees Celsius). The outside of my car has been covered in ice in the mornings and I use a ...
7
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1answer
203 views

How do old cars actually lose horsepower?

I have heard that when a car gets old it slowly but surely loses its horsepower to some degree. For example, I used to drive a 1997 Ford Fiesta with a 1.25L 1242cc engine that supposedly produces a ...
8
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3answers
172 views

Can I buy a used car to learn auto repair & DIY?

I am seriously considering learning some auto repair knowledge. I don't want to use my good car as my experimental starter kit. So can I buy a used car somewhere and have it towed home just for the ...
7
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2answers
483 views

What are all the different types of fluid in a car and a short summary of their use?

A fluid is defined as anything that flows, hence for our purposes a gas or a liquid. I know that there is fuel, engine oil, engine coolant and brake fluid. Also air is normally taken in through a ...
7
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1answer
93 views

Displacement sensors for car wheel and datasheets

Probably title says it all, but I am on my design work for car suspension and cannot find a good displacement sensor for each of the wheels of the car. I tried to look up for accelerometers, which can ...
1
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1answer
112 views

Auxiliary input status and Auxiliary input / output supported OBD2 PID

I want to know what does Auxiliary input status (PID 1E) and Auxiliary input / output supported (PID 65) OBD2 PID mean. Do they tell me whether my car is in the Aux mode (while I am listening to the ...
3
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1answer
74 views

What exactly is a gearbox?

You know that gear stick that we all use so much? Well, I know what it does in the sense that I know how to change gear and drive a car with a manual gearbox, but I don't know much more than that. ...
13
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1answer
89 views

How much does a driver weigh?

I was amused when I saw one of the statistics for my VW Passat B5.5 car, which stated as follows: Kerb weight with driver - 1425kg I know this is a very weird question and I hope its not too ...
6
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2answers
141 views

2004 VW Passat B5 What and Where is the Locking Wheel Nut?

I was asked recently where I keep the "locking wheel nut" on my car. What is this? What does it do? How can I find it on my car? Do I even have/need one?
4
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1answer
71 views

New Case - Watered the battery and got rust on one of the engine pipe

I bought new car and I added battery water to level. But some spilled on the engine and one of pipe got effected and it has rust on it. I went to mechanic, he told me to apply diesel on it. I did, ...
4
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1answer
103 views

In the US, how do I tell if a car is in good condition?

Say I am planning to buy a used car in the US. How do I judge the car is in good condition? Are there a specific set of documents I should ask for? What are the tests I can conduct before deciding ...
4
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1answer
61 views

Poor battery condition, replacement required! Or is it?

I drive a 2004 VW Passat B5. Recently, my insurance company came round to fit a black box to my car as part of the terms and conditions of my car insurance policy. Whilst they were doing this they had ...
7
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2answers
103 views

Camshaft problem not sure what needs replacing

I'm Looking for a part name and info on what could have caused the problem. So I have an 03 peugoet 206 1.4 HDI and I lost a cylinder after going though them by disconnecting each injector and can ...
4
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1answer
184 views

Cam Belt vs Belt Drive vs Serpentine Belt vs Fan Belt vs V Belt vs Timing Belt

I have a 2004 VW Passat B5 and having started to learn a bit more about engine theory, I was wondering how many belts I have and what names each of the belts have. So, I have a two part question: ...
13
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4answers
1k views

Should I fill my tire?

I measured the PSI on my rear driver tire (using a gauge pin - push it into the needle and a stick pops out with a reading), and I got a reading of 22 PSI. My tires are supposed to be anywhere from 30-...
3
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1answer
95 views

What kind of tools could I use for some aluminum body finishing work without doing any cutting?

I got into a really bad wreck last winter. My power steering was leaking and had locked up in the middle of an icy road, while I was trying to find a median at night. The guy hit me going around 70 ...
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2answers
249 views

VIN information such as Moonroof, engine, etc

Supposed I want to buy a new car and I have its VIN. Is it possible to find information about the car such as whether it has a moonroof or turbo engine from its VIN number? There are services which ...
2
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2answers
140 views

I'm planning to buy a 2nd hand car, how do I know if a car won't give me headaches in the future? [duplicate]

To set your expectations, I haven't owned a car before. The only experience that I have with cars is for 20+ hours (this was driving school). After having read discussions about buying a new car vs a ...
3
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4answers
266 views

Why dual motor Tesla has more autonomy?

Maybe the question is more appropriate for Electronics Stack Exchange, I don't know. In the page http://www.teslamotors.com/models if we scroll down we see the several flavors Tesla sells its Model S....
3
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1answer
172 views

What is the area in front of a car where brand logo is held called?

I have seen the design of so many cars out there specially there front panel where logo is rested, it really looks eye catching. What do we call that panel in automotive terms ?
16
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5answers
11k views

Adding a additional battery to car

I have purchased a brand new Toyota Innova. I need to install a a mac mini, 2 laptops and make this car a mobile office. I need to know if I can install another car battery in parallel, and will ...
2
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2answers
106 views

How do I get rid of spiders inside my car?

I often have spider webs on my right side mirror and in the handle to open my boot. I've seen a spider on the boot handle once, but when I tried to catch it, it crawled inside the handle somewhere (...
6
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1answer
1k views

Why do blinkers of two cars never blink synchronously?

I dont know if I can ask this question here but have been trying to find an answer for this one for a long time. Take three cars of the same make/model/year. With the precision of microseconds, turn ...
0
votes
1answer
42 views

Front of the car(sedan) hitting speed bumps when approached at right angle

The front end of my sedan hits on bumps if I approach at a right angle. The mid/rear portion of the car doesn't hit bumps and mid/rear clearance is decent however the front clearance is poor. My doubt ...
3
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1answer
62 views

Car radio cuts out the car will not start

I have a Mitsubishi Gallant-2004. Just recently, while driving, the car radio will cut out then come back on. After about a minute of doing this it will stop working completely. Lights do not dim, car ...
0
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1answer
114 views

How can you command a vehicle's odometer to calculate the remaining distance?

My aunt uses an automobile sharing company hereafter abbreviated to ASC (eg: Autoshare or Zipcar), which permits only 200 km daily (excessive mileage is charged); but observe: ASC cares only about the ...
3
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0answers
63 views

Automatic - Cold engine uses tons of gas to move

so I recently purchased a Volkswagen Golf MK4, 2002, Automatic. 1.6 SR running on Gasoline and LPG. When I start the car in the morning (Usually 2-7 Celcius outside),starting it with Gasoline ...
0
votes
1answer
67 views

New oval car speakers.Which size?

i want to buy new oval speakers for the rear side of my car.But i'm having trouble figuring out which one to buy.The car came with the holes and ready cables for the speakers but without them.The hole ...
1
vote
1answer
2k views

Humming sound from car when driving

I have a Nissan FB 15 car. Today I can hear some humming sound from the front of the car. I'm not sure whether it comes from the engine or wheels. It's happening all the time. But when I increase the ...
1
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2answers
209 views

RPM problem (car is jerking)

I have a Toyota Sx Carina, Model 1995, engine: 5E-EFI. I just bought this used car. But when I am driving I am facing some problems. When I drive in D mode the RPM (race) is not constant. It is just ...
3
votes
3answers
161 views

After five years in garage diesel car wouldn't start, what should be done?

One of my friends left his car in the garage since five years back and he has lived abroad since then. He left it with a full tank(its a diesel), and it ran perfectly well back then. Now he's back and ...
7
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2answers
880 views

Music stops playing when pressing the clutch down

In my car the music of my car radio stops playing almost every time when I press the clutch. It does not always stop, but probably in 80% of the cases. It never stops when I do not press the clutch. ...
3
votes
1answer
113 views

How much amperage is an average car battery?

So, this is in general terms... But say you have a flat battery and you wanted to start a car without another card battery? Car batteries are 12V but I'm not sure how much current they are. Do they ...
3
votes
1answer
66 views

After long journeys, gear slips in 5th, but not into neutral

This is a follow up to another question I asked. I've managed to get some video of it happening this time. It started happening after travelling for about 2 hours. I was experiencing heavy traffic. ...
1
vote
2answers
62 views

Crossover amp selection question

I have a 2012 Chevy Silverado C1500 with factory (non-bose) sound. I have upgraded my speakers using Kicker DSC65/DSC654, and now am looking to add a amp for the speakers. I am interested in a unit ...
0
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3answers
906 views

connecting backup camera in my honda 2001

I am trying to set my back view camera in my Honda 2001. I could not figure out how to make electric configuration - I just want to avoid using tail light and my backup camera can keep running while I ...
2
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1answer
60 views

Starting a Lexus that has been sitting and has a good battery

I have tested the battery and it is okay. The issue is that when I turn the key I get no electrical response. We used the car last Thanksgiving. Does the car shut down something else when it is idle ...
2
votes
1answer
36 views

Early rotor warping on newer 11 Lexus GS350

I can't at all explain why this happened, but my 11 Lexus GS350 warped front rotors and all I ever do is keep the car in gear and use the engine to slow down. There is even a Standard Simulation mode ...
3
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3answers
426 views

Safe engine braking in automatic cars

When I was learning to drive, I took my lessons in a manual car. On one of the lessons I was performing a reversing maneuver and I controlled the car on both the clutch and the brake pedal... which I ...
4
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1answer
35 views

Removing material scraped onto car paintwork from plastic wingmirror

What is the quickest way to remove material scraped onto a car's paintwork from another car's plastic wingmirror? Removing even a small amount is so far taking a large amount of elbow grease.
2
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1answer
229 views

Car and bike. How to keep it in good condition when unused for two months?

I've seen this post, this one and this one. But what about a bike like a Hero Honda Splendor+? Apart from keeping the fuel petcock off, what else should be done to ensure that the bike runs fine after ...
1
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1answer
362 views

Achieving least wear on clutch when changing gears? [closed]

I want to do the least wear on my clutch on a manual car. I only recently passed the test and I wonder if I ever learnt to use the clutch efficiently. Here's how I change gears: foot of gas press ...