44
votes
14answers
8k views

Are classic cars safe?

Are classic cars safe? I am interested to know the differences between modern vehicles and vehicles of old from the 1960s. In the event of an accident, how does a classic vehicle compare to a ...
3
votes
2answers
21 views

Dent Removal From Passenger Door

I have a HUGE dent in my front passenger door from where I was attacked by an ELK. This dent has been in the door for probably 12 months as I previously did not care that it was there, lol. Now I ...
11
votes
6answers
6k views

2000 Jetta runs rough, shudders on cold start only on wet days.

This is an issue I've had off and on for, embarrassingly, at least a year: On misty or wet mornings, everything starts out fine but, a few minutes into the drive (like clockwork. I even know the ...
5
votes
2answers
199 views

Is there a difference in cars manufactured for hot or cold climates?

I have one very interesting question. I would like to purchase new Volkswagen Jetta TDI 1.6 2015-2016. I found new car in official dealer store. But there is one problem - These cars were constructed ...
3
votes
1answer
24 views

2010 Ford Taurus keypad panel pulling away

I just bought the car and in process of discussing the issue I have with the door keypad panel pulling away. The dealer promised to get a garage(close to my house) to fix it for me but I'd like to ...
2
votes
0answers
15 views

Engine running rough after spirited driving

My car is a 2003 Chevy Impala 3.4L, with just over 200,000mi on it. I've checked the oil, it hadn't been on the road in about a month. My wife and I had a race a few days ago with her in the Impala ...
2
votes
0answers
9 views

2000 mercury grand marquis …car sounds and feels like wants to shut off

My car sounds and feels like wants to shut off. It started yesterday - I was leaving a friends house and was about 2 lights away from home when i felt this weird jerk and then i heard a clink and ...
11
votes
3answers
686 views

Why has my car burnt through all the oil?

I have recently run in to trouble with my Vauxhall Corsa 1.2 2013. I broke down the other day after a huge cloud of white smoke out the exhaust followed by a severe loss of power. The AA came had a ...
25
votes
8answers
6k views

Do I really need to wash the outside of my car?

Some people say they wash the outside car every week as it makes the paint nice etc Are there any benefits of washing the outside of my car? Do I really need to wash the exterior of my car every ...
25
votes
3answers
7k views

Static vs. Effective compression: Why does higher effective compression not require higher octane gas?

Background I've been trying to do a lot of research on boost lately because I'm planning on running a moderate turbo setup on my daily/light-duty-autox car in the future. I'm trying to get into the ...
5
votes
2answers
64 views

Mode 02 - Freeze frame data use

I got some data on sending 0202 command (Mode $02, PID 02). It is the freeze frame data. I don't understand why does anyone need the data? Do anyone (including mechanics) ever open Freeze frame data? ...
9
votes
5answers
483 views

How to remove metal valve caps?

I put metal valve caps on my tires a year or so ago, because I'm an idiot. When I went to add some air to my tires one day, I found that the caps were seized up. Now I am unable to get them off. This ...
6
votes
3answers
287 views

Uses of small sized 1/2" drive sockets

I'm currently a first year apprentice and building my tool kit as I go. I see often larger socket sets include 1/2" drive sockets ranging from 8 or 10mm. Is there a reason that 1/2" drive sockets of ...
7
votes
3answers
70 views

How do I fix my Heater & A/C in my car, suspect vacuum problem?

I didn't see this question asked after a search so I thought why not. I have a 97 GMC Sonoma with 90k miles that I barely drive. Since the hot summer is coming fast I went to use the AC and I am ...
4
votes
0answers
15 views

06 Cobalt - Car dies while driving and won't start back up

Car dies while driving and won't start back up - turn key no clicking no nothing - all gauges and lights light up - battery charged . Can jump across starter and it starts and dies. One mechanic says ...
10
votes
2answers
175 views

Rough idle @ stoplights - O2 sensors reading zero voltage

I have an '05 4.7L Dodge Dakota that has had an issue with rough idle for over a year now. It seems to only happen after coming to a stop at a traffic light. It seems to happen more often after having ...
7
votes
2answers
29 views

what sensors and formula are used to control VGT/VNT turbos?

I want to fit a variable geometry turbo to my car. Its vanes are usually controlled an electrical actuator (otherwise sometimes it's on vacuum). What information is used to to inform the state of the ...
9
votes
10answers
2k views

How can I detect vacuum leaks without access to a smoke machine?

In the course of helping my friend sort out a lean condition with his Mercedes GLK280 we have to pinpoint the source of a vacuum leak in the intake plumbing. The interwebz tend to recommend having ...
18
votes
3answers
1k views

What is the proper way to bleed brakes and replace the fluid?

What is the proper way to replace the brake fluid in a car? What tools are required? I want to make sure I do not get any air or bubbles in the system as this is something that needs to be done right ...
9
votes
1answer
53 views

How is AFR calculated from ODBII readings

In another post (A most intriguing cold-start misfire mystery) I found this quote: Mass air flow = 3.66 g/s Fuel flow = 1.27 l/h, Fuel rail pressure = 380 kPa This indicates to me that AFR ...
5
votes
4answers
1k views

Is it recommended/necessary to wear rubber gloves while replacing a car battery?

I'm not too car-savvy but I want to start working on my car on my own. My first challenge has arisen: replace battery. Do I need to concern myself with being shocked while trying to change the ...
4
votes
1answer
22 views

How can I determine the turning profile of an articulated vehicle?

I'm working on a project that requires me to design an overload control centre where overloaded trucks are allowed to redistribute or shed some of it's cargo in order to continue to travel on the ...
6
votes
1answer
91 views

Small crack/gap between cylinders on block

I was doing a head gasket replacement onnmy 86 Kawasaki ninja gpz1000 and I while cleaning the gunk off the top of the block I noticed a small gap/crack in between two cylinders (Pictures are linked ...
5
votes
2answers
64 views

Excessively over filled motor oil. Ran for a few seconds until smoke came out. Now my car won't start

So last night me and a friend changed the oil on my 2005 Chevy aveo. The only problem was that what we were draining was the transmission fluid and long story short we ended up adding about 6 litres ...
4
votes
4answers
269 views

Can 100% calculated load be reached in neutral?

While searching for information about how is engine load calculated I came across this question which contains an equation for the ECU load calculations. As I understand it under fixed atmospheric ...
4
votes
1answer
2k views

8th Gen Honda - No Start, No Crank (down the rabbit hole)

This one should be fun for any Honda aficionados out there. I have a 2007 Honda Civic. Some days it does not start or crank; seems related to the temperature. When the car starts, it runs fine and ...
11
votes
4answers
1k views

If only replacing two tires should they go on the front or back? [duplicate]

As the titles says I've seen several shops indicate that if you can only replace two tires that they should go on the rear, example Firestone: So shouldn't tires be placed on the front? I was ...
55
votes
16answers
248k views

Should I resurface or replace my rotors everytime I replace brake pads?

I have heard it is proper practice to replace or resurface your brake rotors every time your do a brake pad replacement. Does this need to be done every single time or is it overkill? Maybe it is ...
4
votes
2answers
171 views

Is there a key code with my Kawasaki

I hear that there is a key code for my 2006 Kawasaki Vulcan 900 LT that can be given to a dealer who can then cut a new key for my bike if ever necessary. Now it is. But where do I find the key code?? ...
4
votes
1answer
287 views

Tire puncture with glass

What has the highest chance of puncturing your tire? Driving over a piece of glass at 5mph or Driving over a piece of glass at 30mph The former would have quicker contact but the latter would ...
4
votes
1answer
28 views

Horrific Squealing on Start - 2002 Pathfinder

When the engine is cold, horrific squealing comes out from the engine compartment. Horrific squealing remains when the transmission is in park and reverse position. It disappears after driving forward ...
15
votes
8answers
53k views

What causes brakes to pulsate right after rotor and pad replacement?

I have a 2002 Infiniti Q45. I replaced the front rotors and pads on Sunday. It was the first time I've done this on a car, though I have done it countless times on various motorcycles. I was careful ...
3
votes
1answer
31 views

Does the oil level in my Pulsar 220 FI change the engine sound?

I own a 2009 Pulsar 220 FI. When the engine is cold, the sound of the engine is pleasant. But when I run a few kilometers, the sound becomes harsh. I read that when engine oil gets hot the oil flows ...
3
votes
5answers
4k views

Why does my automatic 2002 Honda Accord EX V6 seem to struggle when shifting gears?

It's happening more and more these days where I will hit the gas while at a complete stop. My car starts moving, but not as fast as it should based on how far I have the pedal down. Anymore, I can ...
6
votes
1answer
48 views
+50

How do I get to see my Mode 06 in OBDii

Mode 06 in OBD2 is good to get an insight of what faults the car might encounter in the future. But I am unable to find out what command should I send to get Mode 06 data. It has TID$01 CID$01, so how ...
2
votes
0answers
34 views

Can a modified or non-fixed firing order yield a racing advantage?

I'm looking forward to more sports car racing this year (alas, just as a participant) and so I thought I'd look over the rules in detail. Specifically, I was reading the 2016 IMSA Technical ...
12
votes
1answer
91 views

Are widebands known to go lazy over time?

I know narrowbands can go lazy with time, but what about widebands? This is a sequel to the cold-start misfire mystery. It turns out that we were looking at the wrong PID's for the front O2 sensor ...
7
votes
2answers
66 views

Is there any car that comes from factory with a integrated dashcam?

I have a car dash cam on my car and I think it does not really integrate well to the car. It blocks some of the view and may attract thieves. Is there any car that as an integrated dashcam from the ...
3
votes
3answers
45 views

How can I remember when to service my vehicle?

Servicing intervals are usually specified using kilometrage, years, or a combination of both. For example my motorbike has servicing intervals every 1000/12000/24000/36000/48000/etc. months xor ...
5
votes
2answers
24 views

How do I inspect a used tire?

Used tires, how can I be sure that they are roadworthy? Aside from looking at the general appearance, how do I properly inspect the tire(s)? Are there any scenarios, (damage has occurred), where I ...
5
votes
1answer
38 views

Hand-testing Shock Absorbers

Does manually hand-testing shock absorbers have any validity for checking if a shock is good or bad? Does hand-priming shock absorbers help? I usually hand-prime shock absorbers that I feel are ...
5
votes
1answer
22 views

Does Fiat need dedicated FiCom OBD hardware and software for diagnostics?

I got an ELM 327 with Bluetooth from my brother in law. We have tested it in his Chevrolet Aveo with several apps and it works like a charm. When I tried it on my Fiat Panda 2012, the apps couldn't ...
12
votes
4answers
3k views

Do pistons keep moving when the car stops?

When you are driving and stop at a light, do the pistons still move up and down due to combustion? If not how will the engine know when to combust the fuel to keep it moving?
8
votes
1answer
42 views

What are the protrusions on a front-end bra for?

Every now and then I come across a car that has parts of its front covered in a leather-like tissue. Finally, I have learned that these things are called front-end bra or front-end cover. The linked ...
6
votes
4answers
387 views

Is it safe to overload the roof rails?

According to the manual, the "permissible" load for the standard rails is 35kg. I need to take two Kayaks around with me, which in total weight is about 40-45kg. Would I unintentionally turn my ...
7
votes
3answers
487 views

Does using a ratchet size adaptor on a click-type ratchet wrench reduce the applied torque?

Long story short, I have to purchase a torque wrench which I will use to torque things like brake calipers, wheels and the like. To make things interesting, I will have to buy it a different size ...
3
votes
3answers
41 views

Why do some engines use both TPS and MAP sensors?

I ask because I've always thought it peculiar that the OEM LS1 throttle body has provision for both MAP sensor and TPS. Since intake manifold pressure depends on how open the throttle plate is, I ...
4
votes
2answers
27 views

MB 2004 C320 wagon overheating at idle

In December 2015, my 2004 C-class wagon overheated (temp light came on, nothing dramatic) for the very first time while stuck in traffic for 30 minutes. I had it towed to a nearby MB dealership (not ...
3
votes
0answers
33 views

Triumph America 2002 running lean on one cylinder

I have a problem with my America 800 it's running lean on the right cylinder and when I adjust the mixture screw it makes no difference. The mixture was checked using an afr meter. The rubbers ...
0
votes
0answers
8 views

Ford Ikon tdi Unknown details - starting problem [duplicate]

My dad bought the vehicle last year, but recently he has been having trouble with the vehicle. First he had leaking injectors whereby he repaired them,but now he has been having the problem of bubbles ...

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