Questions tagged [car]

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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19
votes
6answers
25k 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 ...
8
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5answers
1k views

What clues are there to identify real mileage?

This is a bit theoretical question, maybe viable for a wiki. Suppose you want to buy a 10yo car and among available deals you see one with suspiciously low mileage (e.g. 5'000 km). Seller assures you ...
4
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1answer
247 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 ...
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2answers
2k views

How does the speedometer on my dash actually work?

So pretty much everyone knows what a speedometer is, the thing on your dash that tells you how fast you are going, whether or not you're speeding, and what speed you have the cruise control set to (...
7
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2answers
23k 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 ...
6
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1answer
1k 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 ...
0
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2answers
77 views

Can I shift to neutral when driving? [closed]

Many questions on if we should shift to neutral when at stop lights. But I've developed a habit to shift to neutral when going downhill or far away approaching a stop light to avoid unnecessary speed-...
11
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2answers
4k views

Losing coolant fast after just fixing radiator

I have just got my coolant tank and radiator replaced after a leak in the radiator and a cracked coolant tank. I filled the coolant tank last month and now it is nearly empty. I am just wondering if ...
8
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1answer
799 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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2answers
2k views

What is the purpose of a microphone placed at rear view mirror?

I just bought a used Chevy Impala 2005 and it has a microphone placed at the rear view mirror and its wire goes inside the hood. I don't know where it goes and I have no idea how to find its purpose. ...
7
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6answers
14k views

Why do Diesel engines have a higher compression ratio than gasoline engines?

Are Diesel engines constructed differently, so that they have a higher stroke volume? (longer stroke, smaller combustion chamber etc.) I know the main differences between Diesel and Gasoline engines(...
6
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3answers
700 views

Filling the tires with something other than air, to avoid puncture hassles?

I'm asking because: - I've had flat tires four times in two years and it has been very annoying. - The entire family of an acquaintance died when their car tire burst and the car turned turtle on a ...
6
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1answer
2k views

What is the effect of the throttle body on the power curve produced by the engine?

I heard from another member of this community that the throttle body, among other things, has the ability to change the power curve of the engine. What exactly is a throttle body? How might the ...
5
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3answers
1k views

Multimeter to check car battery current

short background, my car battery will often be too flat to start the car if I don't use it for about 48 hours. Worst it happened the other day after leaving it at airport car park for 4 days and come ...
4
votes
1answer
206 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 ...
3
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1answer
80 views

Car engine coolant system (radiator cap) air

I have only one question! So what I've heard, it's bad to have air left in the coolant system! So my question is, can air get inside the coolant system if I just take off the radiator cap to check ...
3
votes
2answers
822 views

2004 VW Passat B5.5 - Why are my wing mirrors being weird?

Today whilst I was trying to park my 2004 VW Passat B5.5, I noticed that something to do with my wing mirrors wasn't working quite right. When the toggle was on the left position, the left wing mirror ...
3
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5answers
9k views

Ticking noise in a 2011 Corsa SXI at 54000 miles

I currently have a 2011 Corsa SXI 1.4 Petrol sitting at 54000 miles. I recently purchased this about a month ago and had noticed that there is this mysterious ticking noise. Startup No ticking sound ...
2
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0answers
61 views

second battery for entertainment system

I have installed an Android entertainment system in my car. The problem is that it gets activation signal through ACC line and it turns off while cranking the engine. I will use the ignition line to ...
2
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2answers
2k views

2004 x3 BMW heater blows cold air when stopped or idling

Heater only works when moving blows cold air when stopped or idling
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3answers
113 views

I accidentally put about 3/4 of a quart to much of oil in my car

Would this do any damage to my car? It is a 3.8 v6 Pontiac Grand Prix.
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3answers
13k views

I have 5th gear issue , can i drive in 4th gear at 100km to 115km?

My car scares me while changing gear from 4th to 5th gear because it goes to 3rd gear. As a result on highways i get scared to change to 5th gear. Can i drive my car in 4th gear at speed range ...
0
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1answer
28 views

310 watt light bar 12 awg wire harness

I am currently looking at a 32 inch 310 watt LED light bar for my 2010 Honda CRV. The light bar I am looking at is https://www.amazon.com/dp/B07MCNYXFT/ref=cm_sw_r_cp_apa_i_JpKPDbTR3J8R4. The ...
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1answer
107 views

Clean car and look like brand new

How can I clean my car which will show like brand new, i have tried a lot by trying with different different clothes and different different tricks but result is same like as it was previously . ...