11
votes
3answers
11k views

What are the benefits of low profile tires?

I have yet to find anyone that knows of any benefits of low-profile tires. All of the pros that I've asked have said there is no benefit. Naturally, the number of pros that I have available to ask is ...
11
votes
5answers
3k views

How to fix leaky tires after 2 shops couldn't

I have an SUV with factory 16" steel wheels and P235/70R16 tires. The tires have just under 30,000 miles of gentle driving on them. Two of the tires have been leaking quite a bit (about 10 psi per ...
10
votes
6answers
94k views

What is the difference between normal, platinum, iridium plugs?

What is the difference (besides price) between normal, platinum, and iridium spark plugs?
9
votes
3answers
727 views

Are there any advantages of idling a vehicle vs. turning it off and back on again?

I was sitting outside, eating my lunch the other day, and a small bus (you know, one of the short ones) pulled up to the sandwich shop I was eating at. I noticed that the driver got out of the bus, ...
8
votes
2answers
771 views

Should a mechanical “click” Torque Wrench be set to zero when not in use?

I have a standard click torque wrench. I was told I should set it to zero when not using it in order to keep the accuracy high. Is this true? Secondly, I have not been doing this since I purchased ...
7
votes
3answers
3k views

Is Paint Protection worth paying for?

I've just bought myself a new car, and as expected the dealer is trying to sell me extra items. The two options they are trying to push on me are Paint Protection nano technology paint protection ...
7
votes
1answer
3k views

How does an automatic gearbox know when to change gear

As the title suggests, how does an automatic gearbox know when to change gear, for example, how does the autobox know to shift down when you hit a gradient for example, also how does it know to shift ...
7
votes
1answer
616 views

Car Suddenly Decides To Not Crank

Today I turned the key to start up my car and all the lights (headlights and instrument panel) came on bright and normal, but the engine made absolutely no sound. It wouldn't start, it didn't even try ...
7
votes
6answers
14k views

Couldn't start my Volvo due to Key Error. Called assistance and he fixed it by hitting the key with a screwdriver. What could be the error?

My Volvo S40 (06) would not start when I turned the ignition key. I got a message that was somewhat like "Key Error, please try again". I tried with both my keys so it wasn't the key itself. I think I ...
7
votes
3answers
7k views

What can cause warped rotors?

I have a forward rotor on my '04 Chrysler Sebring causing a lot of pulsation when braking. I replaced the rotor- but within about a month the problem had re-appeared. The guys at Monroe noticed my ...
7
votes
1answer
4k views

Where can I find my car's colour code?

I'm currently shopping around for a touch-up pen to repair some very light scratches on my car. I've found out that our local hardware automotive store can mix the exact colour for any vehicle. ...
6
votes
2answers
663 views

What bolt extractor will remove a broken motor mount bolt on a 2004 Subaru WRX?

Things were going slowly but well on my install last night until I sheared off the passenger side motor mount bolt while putting everything back together (at about midnight - sigh). Here are the key ...
6
votes
2answers
7k views

Engine Size and Fuel Consumption

I have this weird misconception that the engine size is related to the amount of fuel being burned in one cycle(4-stroke engine). I know this is stupid but how does engine size relate to the amount of ...
6
votes
2answers
331 views

All weather tires vs winter tires on well-plowed roads

I live in Minnesota. I've seen lots of people recommend changing to winter tires in the winter. However, what doesn't make sense to me is that the roads are plowed very well here. 90% of my driving ...
6
votes
3answers
2k views

Difference between high octane and low octane?

What is the difference between high octane and low octane fuel? I'm not asking if one is better than the other for my vehicle, specifically, but rather what occurs differently both scientifically and ...
5
votes
4answers
5k views

What is the purpose of plastic engine covers?

I have a 2010 Toyota Corolla. What is the purpose of the large plastic cover that stretches over my valve cover? Does it have a particular function? Are they just for looks? Or are they designed by ...
5
votes
1answer
3k views

My 2005 Mazda 3 Front Passenger window motor receives signal to go down, but not up

If you look at the picture below you will see that I took the plastic panel off my door, and separated the motor from the regulator. After I disconnected the motor that I thought was bad, I connected ...
5
votes
2answers
2k views

Why might lower settings of a dashboard fan not work if the highest does?

My wife bought a Nissan Note second hand and the internal ventilation fan works on the highest setting (3 or 4) but not on the lower settings. We've checked the fuses and all seems fine there. Could ...
4
votes
2answers
1k views

1999 Honda Accord Coupe Stalls After Warm Startup and Shaky Idle TSB

The car will intermittently die at random times while doing errands or anything that requires frequent start/stop engine. Sometimes after starting it idles at about 500RPM, and dies. Shifting or ...
4
votes
2answers
2k views

How do I know when to replace shock absorbers?

In my last trip to the shop, the mechanics told me that I should replace my shock absorbers. When I inquired as to why, I don't feel that they were very clear with their answer, like they normally ...
4
votes
5answers
5k views

Uneven rotation sounds when my car gets to 50-60 MPH

My 2005 Mazda 3 with 73K miles (roughly 20K on the tires) on it starts to make a sound, just like your washing machine does when all of the clothes go to one side and its still spinning, when I get to ...
4
votes
2answers
545 views

Upgrade to HID lights in a Jeep Wrangler

I would like to upgrade to HID lights in my 2008 Jeep Wrangler. The stock lights aren't bright at all. My question is, since this would be an aftermarket upgrade, what am I looking at here? Is it ...
4
votes
3answers
1k views

Is Redline Lightweight Shockproof appropriate for an aging 2004 Subaru Impreza manual gearbox?

I have an aging (but wonderful) 2004 Subaru Impreza WRX with a manual gearbox. For some time, I have noticed that the synchros have begun to feel worn with the stock dealer-issue oil. Shifts are ...
3
votes
5answers
527 views

Can I save money using E85 in my flexible fuel vehicle?

Where E85 Ethanol is available (not very common), the price per gallon is often lower than regular unleaded gasoline. Though I've read that fuel economy is commonly reduced by 20% or more, when using ...
3
votes
1answer
961 views

How to diagnose “Creaking” / “Scraping” sound when entering parking lots?

My drive to work involved entering a lot that has a fairly steep grade compared to the pavement. As such, in low riding vehicles, you need to enter it fairly slowly. The thing is, recently, I can ...
3
votes
3answers
4k views

Clunk noise from my brakes on first application

I have had the brake pads replaced on my Forester STi (4 pot Brembos all round) and have noticed a strange noise on first application of the brakes after moving either forwards or backwards. By this ...
3
votes
2answers
1k views

Stuttering Accord at Stop Lights

My 1996 Honda accord with 200k miles has started acting up. After a long vacation, I came back and the engine would seriously stutter at all speeds, especially on acceleration. I assumed it was fuel ...
3
votes
1answer
4k views

Fixing a trunk latch on a Ford Focus

If the latch on an '03 focus (not hatch back) just clicks at you 4 or 5 times and never actually closes what needs to be fixed? I can't close my trunk. The black plastic thing that the latch is ...
3
votes
1answer
93 views

Amount of grease needed on a typical wheel bearing.

Replacing front wheel bearings on a RWD truck. Inner and Outer. Will 14oz tube of grease be plenty? Is there a rough estimate per bearing or does it depend on the type?
2
votes
1answer
1k views

Lugging the Engine (Manual Transmission)

So...lugging the engine obviously isn't something that is good. But why? For example when you feather a clutch to get the car moving, it lugs for a quick moment when you hit the catch point (When ...
2
votes
1answer
57 views

Replacing a tube on the engine

Im trying to replace a tube in my ford focus 2000. I tried to look up the schematics for the engine to see what the part is called but I'm pretty newby so i dont know what im doing. Luckly the tube ...
2
votes
5answers
1k views

How to solve unexpected skidding in 1995 Toyota Camry

My 1995 Camry LE (4 cyl) skidded twice. Luckily I escaped both occasions unhurt and without damage to the car. First time it happened on a freeway when I applied brakes @ 50mph. I thought it was ...
2
votes
2answers
432 views

Kia Soul aftermarket headlights

What are the options (in Canada) for aftermarket headlights, e.g. HID, etc. for the Kia Soul? I find the Soul's headlights to be lacking, and I would like to get something brighter since I do quite a ...
1
vote
1answer
162 views

2001 Hyundai Sonata System too lean

I own a 2001 Hyndai Sonata. Check engine light is on, and I'm getting an error code P0171, Bank 1 System too lean. I figured I'd start eliminating problems, so when I ran an ODB check, what I got was ...
1
vote
2answers
154 views

Writing CAN Messages

I want to know what should i write with the CAN ID to send it to ECU. I am using ELM327 and Raspberry Pi with all connections to OBD-ii. initially for sending general PIDs to the ECU through ELM327 ...
1
vote
1answer
215 views

'99 Audi A4 seat belt warning sign

I've had this seat belt warning light on my dash for a few weeks now. My dealer says the wiring to my driver seat is gone and replacing it could cost close to 800 USD. Is there a better option?
1
vote
3answers
319 views

My 2001 Mitsubishi Airtrek revs at 2250rpm for 30 seconds before slowing. Will this speed harm the engine?

My 2001 Mitsubishi Airtrek 2wd with 86000k revs at 2250rpm for 30 seconds before slowing. Will this speed harm the engine?
0
votes
0answers
20 views

Low Pressure with New Coolant System

I recently had my head gasket, radiator, thermostat, and hoses replaced on my BMW 318i, but the water pressure is still showing there is a leak somewhere; any idea what is going on?
-1
votes
2answers
112 views

Does torque decrease mathematically?

There are 2 cars, car A and car B. Car B is 20% heavier than car A. We all know that this means that these 2 cars will have same power if car B at the same RPM (revolution) has 20% more Nm. Can the ...
43
votes
9answers
9k views

Does the amount of fuel in the tank matter?

As long as there is some fuel in the tank, does the fuel level matter? In other words, is it advisable to make sure the tank is mostly full most of the time, or is this just silly? In other words, are ...
10
votes
3answers
67k views

What iPhone/iPad app works best with ELM327 Bluetooth OBD-II reader?

I've found a number of apps for the iPhone/iPad that connect to ODB-II readers via WiFi, but unfortunately that means that it disables 3G and all the benefits of having a 3G device built into my dash. ...
17
votes
2answers
4k views

Jump starting a dead battery: Connect black wire to negative pole of battery or grounded metal?

Most of the advice I've seen for jump starting cars instructs to connect the black wire to a bare piece of metal on the car with the dead battery. However, I've always just hooked up both poles to the ...
24
votes
3answers
5k views

Difference between FWD/RWD/4WD/Part-Time 4WD/AWD?

I'm curious as to what are the particular difference between the various drive systems available in modern vehicles. FWD and RWD are pretty straightforward - Front Wheel Drive cars put the power to ...
8
votes
3answers
408 views

What are good features to look for in an ODB-II reader

I recently took my car in for the engine light. It turned out to be a minor problem (crack in gas cap let water in). It would be nice to have a low-cost ODB-II reader to be able to find out for ...
25
votes
3answers
15k views

Is there a way to put Prius with dead battery into neutral?

I own a 2010 Prius. It has a dead battery, front facing forward in my garage. I do not have long enough jumper cables. I’ve searched the Internet. Did Toyota really create a car that cannot be put ...
11
votes
5answers
3k 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 ...
11
votes
6answers
19k views

How far can you drive with an empty radiator?

The radiator on my Peugeot 106 has started leaking very badly and need replacing. I don't have time to fix it at the moment, so I'm taking it to a garage. How far can I drive it without damaging the ...
10
votes
3answers
348 views

Any recommendations on vehicle maintenance software for the DIYer?

I currently use a combination of Car Minder for the iPhone - it's only $2.99 but limited functionality - and Excel spreadsheets. Ideally I'm looking for something that will track all service for up ...
10
votes
3answers
3k views

What differences between synthetic and dino oil?

What are the main differences between synthetic and dino oil, and is one always better than the other?
7
votes
2answers
241 views

Keeping an old car alive?

So I drive a '97 Subaru Legacy with about 200,000 miles on it. Still runs like a charm, never gives me any trouble. Had the brakes, rotors, and calipers all replaced recently, tightened the power ...

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