6
votes
1answer
88 views

Are There any Benefits to a High Voltage Coil Pack?

I'm considering replacing the coil pack on my 98 mazda 626 GF 2L, and am looking at a standard replacement at about $15, a standard replacement with 10 year warranty for about $21, and a "high output" ...
2
votes
0answers
19 views

All-wheel drive single tire placement [duplicate]

We have an all-wheel drive Subaru. A few months ago we had one tire blow on a set that was around a year old. We were told (by the tire store) we had to replace all of them. That sounded nuts but I ...
3
votes
0answers
31 views

Which types of protectants are safe to use on automotive tires?

Some protectant formulations are known to damage tire rubber and cause sidewall cracking (which can be very dangerous). What types of tire protectants are recommended to prevent sidewall cracking? ...
5
votes
1answer
129 views

Security and engine issues

I have a fiat stilo 1.4(2004) plate. It had an intermittent issue with the "car security manager loose connection" and the car wouldn't start sometimes, But when shaking the fuse box/power ...
11
votes
2answers
2k views

Holding clutch when braking

I always hold my clutch when braking suddenly in traffic or to move in traffic. I heard that its bad driving. I tried to stop holding clutch and I am unsuccessful in it. How bad is this for motorcycle?...
2
votes
1answer
40 views

Specifics about changing a brake caliper on 2000 Toyota Camry

I went to change the brake fluid in my 2000 Toyota Camry and when I tried to unscrew the bleeder nipple on a front caliper it broke in half rather than unscrewed. So, I need to replace the caliper ...
3
votes
1answer
38 views

Emergency Brakes feel like they are set but are not

When driving my 2006 Pontiac Grand Prix Wide track, it feels as if the emergency brake is on even though it isn't. What is causing this?
4
votes
1answer
71 views

Can I use “Designed for BMW” Michelin tyres with a non BMW?

I am looking for a Michelin Pilot Super Sport R18 225/40R18 88Y and 245/35R18 92Y for my Mercedes-Benz W208, but this tyres marked on the website as "Designed for BMW". What does it mean? What are ...
5
votes
1answer
136 views

How do I change my HDD navigation from Japanese to English?

I have a Toyota 2009 Mark X ZiO trd Sportivo and the model code for my navigation system is DBA-ANA10 and my car chassis number is ANA10-0030599. How do I change the language from Japanese to ...
11
votes
4answers
42k views

Why check oil when engine is at operating temperature?

The owner's manual to my VW Golf Mk7 states With the engine at operating temperature, park the vehicle on a level surface to ensure that the engine oil reading is correct. Why is it important ...
5
votes
1answer
11k views

2008 Ford Mondeo 2.0 TDCI cranks but won´t start

Ok, so I´m having this problem with a 2008 Ford Mondeo mk4 with a 2.0 TDci engine code AZBA, same one Peugeot uses in other cars such as the 407. Car was having trouble a few days back to start ...
4
votes
2answers
119 views

Stopping distance of a car

I want to calculate the stopping distance of a car from an OBD2 device. Say, I am driving at 30 kmph and apply my brakes hard. My car will skid and stop at a distance "x" meters from that point. This "...
1
vote
0answers
26 views

which is more popular brake, disc brake or drum brakes in passenger cars in US? can anybody give a rough idea about percentage [closed]

i am unable to find that which is most common brakes used as braking system in USA, as i am studying the braking system of vehicles in USA.
2
votes
1answer
72 views

Swift Dzire Battery Sign remains ON whenever car is started after 9-10 hrs

Swift Dzire Battery Sign remains ON in the dashboard lights whenever car is started after 9-10 hrs and Car doesn't move until the battery sign is gone. Battery Sign usually remains ON for 10-15 ...
4
votes
1answer
54 views

How does the ignition system control the Energy of the spark?

An automotive ignition system needs to provide a specific amount of energy to properly ignite the air/fuel mixture in the combustion chamber. Energy = voltage * amperage * duration. A specific ...
3
votes
2answers
161 views

BMW E90: Professional Radio (Alpine CD73) USB Adapter won't work

I bought an USB Adapter which emulates a CD Charger. The port wasn't used yet. When I plugged my battery the Radio worked, but I couldn't find the CD charger /USB in my radio source menu. Do I have to ...
1
vote
1answer
211 views

Car shudders above 45 mph after a spin out into a ditch

I spun out in freezing rain and ended up in a ditch. I was doing 60 down to 45 when it went all the way around and on to the shoulder, which was soft dirt and buried the front tires. My vehicle is a ...
4
votes
1answer
52 views

External regulator just installed and now there is a battery drain that kills my car

My 1996 Jeep Grand Cherokee started beeping and telling me to check the battery. So I had the car tested and it said the voltage regulator was bad. The voltage regulator on these Jeeps are in the PCM,...
3
votes
0answers
51 views

Engine jolting and struggle starting

I drive a 2002 VW Polo automatic, and in the last few days it's really been struggling to start when it's cold, and then this morning the car would jolt on acceleration every now and again, when the ...
3
votes
1answer
35 views

my cars coolant dries up atleast less than a half litre after i drive around 400 km. why?

In my car, coolant dries up fast and after i drive around 400 kms, again I have to feel up at least less than a half litre. Why it is? No leakage.
4
votes
1answer
67 views

2012 vw jetta rear brake shoes

I replaced rear shoes and drums on my 2012 jetta got the shoes on but new drums will not go on is there any kind of adjustment to get the drums to go on freely
3
votes
0answers
69 views

How thick should sheet metal be for steel wheel tubs?

As the title asks when building wheel tubs for a hot rod what sheet metal thickness should you use to build your wheel tubs?
4
votes
1answer
114 views

Is there a suggested wall thickness for steel tubing when building frames?

Looking into building a frame for a hotrod I've seen different sizes used for different size vehicles such as 2" x 2" or 2" x 3" box tubing and circular steel tubing but I am unsure if a .188 wall is ...
5
votes
3answers
46k views

How serious is the Engine System Service Required message on a Volvo V50 2007?

I got a 2007 Volvo V50 last week and the "Engine System Service Required" message has appeared. how serious is that message and can only a Volvo garage do the diagnostics? It has done 41000 miles. I ...
4
votes
1answer
47 views

Interchangeability of motorcycle parts

How standardized are motorcycle parts? Is every manufacturer doing their own thing or could you take parts such as a crankshaft from a Honda machine and use them in a Yamaha machine? Are there ...
5
votes
0answers
49 views

Passanger door central locking not working properly

I have a 1998 Hyundai Elantra 1.6 GLS and I'm having problems with the central locking. When I lock the car the passengers front door does not lock properly and it only locks half way but does not ...
5
votes
3answers
11k views

Installing ISOFix mounting points in Ford Focus

I have a Ford Focus Mk2 and I wanted to install the mounting points for ISOFIX car seats and I have the needed part but where can I find the installation instructions?
5
votes
1answer
61 views

Should I use a shorter accessory belt?

I've had the A/C discharged on an older truck (2001 Grand Cherokee 4.7L v8), and soon I plan to remove the entire A/C system, specifically, the compressor. Is there anything that I should be ...
4
votes
3answers
25k views

Why does my 3rd gear grind on shifting when RPMs are high on 2002 Audi TT?

This only happens when shifting into 3rd gear (on a 7 gear Audi TT). If I shift when the RPMs are high (say over 2k) then there will be a horrible grinding noise. Instead I have to apply the clutch, ...
8
votes
1answer
114 views

Why won't my crankshaft turn a full rotation?

I have a 95 Camry LE (v6) and I'm in the process of replacing the water pump. One of the prerequisites for accessing the pump is crank pulley removal. User cdunn (thanks a bunch for the suggestions) ...
6
votes
3answers
2k views

Rough Low Idle and Engine Shakes, Hesitation and Lack of Power

On a 98 Mazda 626 GF 2L I'm working on the engine seems to shake / wobble for about a second / second and a half when going to WOT from any starting rpm. It also almost sounded like maybe one of the ...
13
votes
2answers
16k views

How much does spark plug gap affect fuel efficiency?

I've read conflicting reports regarding how plug gap can affect fuel efficiency. For example, I've read that too small a gap won't cause a clean burn, or that too large a gap can cause misfires due ...
6
votes
1answer
145 views

Tires for my husband's Mustang

I bought my husband brand new tires about 3 years ago, he never put them on his car. Are they still good to put on a rim, or no?
5
votes
1answer
69 views

How can you assure a torque wrench is working properly?

Torquing to a manufacturer's spec is important when working on an engine but I've wondered how do you properly determine if an adjustable torque wrench has been zeroed out over it's life and is still ...
5
votes
2answers
75 views

What are the characteristics and uses for desmodromic valves?

In an answer to another questions @Ceshion introduced a fascinating kind of valve train that I have never heard of, desmodromic valves, as introduced by Ducatti. That answer is here: What are the ...
4
votes
2answers
20k views

diagnose faulty voltage regulator causing battery overcharging?

I've been having an issue with an '03 Toyota Echo. The alternator died (at least that is what I thought) as the battery kept going flat. I found an alternator at a wrecker and fitted it, and I ...
5
votes
2answers
45 views

2013 VW Jetta tdi

I'm trying to replace the rear brake pads and rotors on my 2013 VW Jetta TDI and I'm completely baffled by what type of screw this set screw or alignment screw is in the rotor face. It's 6-pointed so ...
4
votes
1answer
46 views

Can getting rear ended crack your engine mount?

I was sitting at a dead stop at a traffic light when a pickup truck rear-ended me. I drive a Honda Accord and the bumper withstood the impact pretty well but still needs to be replaced. Immediately ...
4
votes
3answers
3k views

2006 Nissan Titan makes odd sound, but only at certain speeds

My 2006 Nissan Titan makes an odd sound, like a grinder, mostly when travelling steady at 35, 40 or 45 miles per hour. Even 1-2 mile per hour difference will cause the noise to stop. The noise will ...
5
votes
4answers
5k views

Torque wrench vs regular ratchet

What is the difference between a torque wrench and a regular ratchet that you'd normally use with sockets? When should you use one vs. the other in automotive applications?
8
votes
1answer
124 views

Why does my air compressor fail to start when the tank is partially full?

I have a Harbor Freight (I know, I know) air compressor. It's the 21 gallon, 2 1/2 HP model. The problem is that when the tank is empty it starts fine, and pressurizes the tank to where it should be. ...
6
votes
4answers
1k views

Why outside temperature displays a warning at 4 degrees?

I know that water behaves strangely once the temperature drops below 4 (celsius) degrees. In a nutshell, its volume starts to expand (see wiki for further details) below 4 degrees - when temperature ...
10
votes
2answers
121 views

Do straight/short pipes burn out valves?

I have heard that straight/short/custom pipes can burn out valves on an engine. However, with a 4-cylinder Ford Model A engine, I have been told this is not the case because it has such low ...
9
votes
1answer
135 views

What are the various kinds of tappets / lifters and the advantages / disadvantages of each

A previous question about tappets found here: What are Tappets? covers the basics of tappets. If we go the next step, here are my questions: What are the various kinds of tappets / lifters? What ...
4
votes
1answer
92 views

2012 Ford Fiesta S speedometer calibration

I just got a 2012 Ford Fiesta S (5-speed manual) a couple days ago. It's running great, but I noticed the speedometer reads about 3 MPH too high at around 55 MPH when comparing to the speed on my ...
5
votes
1answer
59 views

Ball joints and boots are constantly in need of replacement?

I have a 2001 Honda Civic. Over the past couple of years I have had to have both front lower ball joints replaced multiple times. The last time I had these replaced I had used my car less than 4,000 ...
11
votes
1answer
320 views

Does recirculated cabin air pass through the air filter?

In general, does air recirculated in the cabin (i.e. when the re-circulate button is engaged on the dash) pass again through the cabin air filter? I know that the cabin air filter filters outside air ...
5
votes
1answer
78 views

I have engine oil in my coolant. What might be the reason?

I have purchased a pre-owned car. After the purchase I saw there was engine oil in the coolant reservoir and also the coolant level is going down slightly. Engine is not heating up. What do I do? ...
5
votes
0answers
28 views

GM 4L60-E Rebuild Questions - Part 1

I am in the process of rebuilding my first 4L60-E (I've done a 4L30-E before) and I had a couple questions. 1st: In terms of the input drum pistons I know there are both aluminum and steel models, ...
2
votes
1answer
53 views

Volvo V40 - How to locate the fault in central locking?

I bought a used Volvo V40 (2002). It worked great for about two weeks, after which the central locking stopped working. The FOB doesn't do anything, and each door has to be locked and unlocked ...

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