7
votes
2answers
500 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
votes
2answers
108 views

Battery and Alternator Pass Test - 2003 Mustang GT

I have a 2003 Ford Mustang GT, I had the battery tested and it will take a jump and start up so naturally I am thinking the alternator is bad. I take the alternator out and have it tested 3 times and ...
7
votes
5answers
22k views

Can this tire sidewall damage be repaired or should I replace the tire?

I* hit a curb and got a small tear in the front passenger side tire. The tear is about 1" long and goes mostly across the surface of the tire but also a little bit, maybe 1/4", toward the inside of ...
7
votes
3answers
10k views

What are the pros and cons of installing an filter on a bike?

What are the advantages and disadvantages of installing high performance air filters (K&N,Green cotton,etc.) over original filter? What are the changes/working occur internally?
7
votes
1answer
146 views

Why should I clean bug and bird debris off my car?

I have a relatively new car with nice clean paint. I've read and been told that cleaning bugs and bird debris off of my car quickly is important because it can damage the paint. Do I really need to ...
7
votes
4answers
877 views

Keeping track of removed screws?

Put simply, are there any good tricks for keeping track of removed screws and bolts when you're dealing with a lot of them? I'm officially one evening into an interior restoration job on my '88 BMW ...
7
votes
1answer
67 views

What is a sprag unit and what does it do?

I know a sprag unit is used in the transmission. What is it and how does it work? Is it used anywhere else or is it strictly a thing used in transmissions? Are there different kinds of sprags?
7
votes
2answers
4k views

Replacing four tires or two front tires on a front-wheel drive car

I have driven my car since ~84,000 miles. As stated below, I have replaced the front passenger tire for slow leaks twice. The other tires haven't been replaced since I started driving it. I am ...
7
votes
1answer
91 views

Erratic single fault code: P0420, P0440, P0446. Normal variance, or indicative of something deeper?

Working on diagnosing an evap/emission/fuel system problem on my Toyota 2003 Corolla. More on that in this question. On 3/2, I saw a mechanic use his handheld OBD to read a code P0420. On 3/12, ...
7
votes
1answer
120 views

What makes a worn car shock spongy and soft?

I'm unfamiliar with car shocks. In motorcycles many rear shocks are charged with nitrogen which acts like a spring. I've seen motorcycle shocks that I've rebuilt have the correct amount of nitrogen ...
7
votes
2answers
269 views

Suzuku Katana does not start after an accident

I have a Suzuki Katana GSX600F. After an accident I was in, I rode the bike home and all was fine except a little cosmetic damage. In rainstorm it tipped over and after picking it up and trying to ...
7
votes
3answers
380 views

2003 Toyota Corolla, 185k: erratic OBD codes, fuel smell, other symptoms

TL;DR: O2 sensor data, thermal measurements, and physical resonance tests all point to a failed Catalytic converter. Here's the back story. MIL illuminated with codes P0440, P0420, P0404. Around ...
7
votes
2answers
742 views

2004 VW Passat B5 Cigarette Lighter Broken - Common Problem

The problem I have been having with my VW Passat was that my cigarette lighter was not working in the car. It is the only one in the main part of the car (there is another one in the boot) and it ...
7
votes
1answer
85 views

Vespa PX 150 Fuel and Carbon issue

I am using Vespa PX 150.It is using Contact Point system. The issue is it is consuming fuel more than average and the plug is full of carbon after approx 50 Km.The engine not start unless I clean the ...
7
votes
8answers
55k views

What can cause a vehicle to run hot, but not overheat?

Anyway, I have a Grand Am 2003 V6. It only has 80k miles. My car ran great when I got it(used), but at some point it began to have minor temperature problems. It would always run a little bit hotter ...
7
votes
1answer
84 views

Locating the O2 sensors and the cat along the exhaust

I gather that the upstream O2 sensor is the one right in the center of this picture. I also gather that the catalytic converter (the "cat") is the bulbous part of the exhaust right behind this sensor. ...
7
votes
2answers
1k views

What to do with damaged alignment dowels in block?

Just took the second head off the 98 Subaru Outback I'm working on and I found one of the alignment dowels was badly crimped over the gasket for about 1/3 of its circumference. I have no idea how it ...
7
votes
3answers
457 views

Why don't all diesel engines have throttle plates?

I learned recently that many older and some newer diesels don't have throttle plates to control airflow. I was also quite shocked to learn about a condition called diesel engine runaway. Apparently ...
7
votes
2answers
43k views

Heater blows cold air at idle

I have 2006 VW beetle with the 2.5L engine. Once the engine has warmed to operating temperature, and I am driving it around, the heater works great. As soon as I stop at a red light, or am idling for ...
7
votes
5answers
75k views

Cold start squeaking noise in engine

I just purchased a used 2010 Corolla 3 days ago. I've only now noticed that when I start the car, there is a squeaking sound coming from the engine. It lasts no more than a second. Sounds like it ...
7
votes
1answer
67 views

Minimum Care of Leather Interior

I have just bought a used Honda Accord with leather seating. I'm not necessarily a car enthusiast, but I would be interested in knowing the minimum I should do to keep the interior in good condition. ...
7
votes
1answer
800 views

Why is there a hissing noise when I open my petrol cap?

When I fill up with fuel, there is often a loud hissing noise, as if you are opening a bottle of fizzy drink or something whenever I unscrew the petrol cap. It also seems like there are vapours ...
6
votes
1answer
943 views

Clutchless Downshifts Using Throttle Blip on a Motorbike/Sequential Gearbox

This is with respect to non synchromesh, sequential transmission. Ducati along with several after market systems, implement clutchless downshifts by automatically applying a slight throttle to unload ...
6
votes
4answers
366 views

Does the Toyota Prius stop if driven off without the key inside?

I have a 2006 Toyota Prius and I am worried that someone could amplify the signal of my contact-less key to unlock, start it and then drive it off. Does the Prius stall if the car is driven away and ...
6
votes
3answers
10k views

My car wobbles while driving

I have a Honda Civic VTI, 1997 model, automatic transmission. When I start driving my car gives a feeling that one of the front wheel is wobbling and the steering wheel receives continuous jerks. This ...
6
votes
1answer
195 views

Weird grinding sound from the gear box

It is not like when you try to shift a manual stick without the clutch. But a lot lighter than that varying in amplitude (louder and lower) and probably is only there when the engine is cold (Because ...
6
votes
1answer
76 views

Sticking While Rotating Crankshaft By Hand

One thing I noticed while trying measure cam lobe to lifter clearances on a 98 Mazda 626 GF 2L, was that when I rotate the crankshaft there seems to be one spot where I have to put in a lot more ...
6
votes
1answer
41 views

Bleeding Brakes

Also with regard to my 2002 Bonneville brake bleeding question, I could not get the rear bleeder bolts loose and did not want to twist them off, thus I bled the rear brakes at the brake hose going ...
6
votes
2answers
91 views

What vehicle does this ancient ignition coil fit?

My father-in-law gave this ford branded ignition coil to me today, and I'm curious to know what vehicle it went to, and how it was hooked up originally. Can I easily determine whether it works or not ...
6
votes
2answers
658 views

VW Passat B5 Rear Door Central Locking Issue - Door Lock Actuator Replacement

My 2004 VW Passat has an issue where the nearside rear door will not always open when the corresponding button is pressed on the car key. When the other doors are unlocked, the faulty door makes an ...
6
votes
2answers
381 views

Is it efficient to use the cabin heat in my car?

As much of the United States struggles through the end of the nasty cold spell, a thought came to mind: Is it generally energy efficient to run the heat in my car? Let me be a little more specific. I ...
6
votes
1answer
39 views

1998 lincoln continental with fluctuating idle when put in gear only (drive/reverse)

I have a 1998 Lincoln Continental. It has 124k miles on it. The history of the transmission maintenance are as follows: Fluid and filter was changed at 29k miles Fluid was flushed at 86k miles Fluid ...
6
votes
1answer
203 views

how do i know if my lead-acid battery has been resurrected?

The OEM battery in my 2008 Jetta SE 2.5L has been nearly fully discharged one month back (had insufficient surface charge after a prolonged use without the engine running, but leaving it idle for 20 ...
6
votes
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 ...
6
votes
0answers
40 views

How to measure transmission fluid levels?

I understand the newer Audi A3's with either type of transmission (auto or DSG) has a really weird way to check (to normal pull the dipstick type checking) the transmission fluid. Can someone please ...
6
votes
3answers
146 views

Are expensive high-brightness 55W headlight bulbs worth the investment?

We've all seen them, bulbs advertised as brighter than the rest, sold under big names such as Philips or Osram. The flag is carried by Osram Night Breaker Unlimited and Philips X-treme Vision. ...
6
votes
1answer
239 views

Do I have to get another Volvo?

I live in Florida and have mold allergies. Multiple times my 2008 Sienna van has a bad AC smell develop which makes me cough my head off. The dealer has cleaned the evaporator and ducts and the ...
6
votes
1answer
133 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 ...
6
votes
3answers
18k views

If one coil spring needs replacing, do I need to replace both?

I just had my car serviced and they discovered that the front, near side coil spring is "incomplete" and needs replacing. I'm getting conflicting advice about whether I need to replace both front ...
6
votes
1answer
50 views

What to Check When Replacing Struts

I'm going to replace the front struts on my 98 Mazda 626 and was wondering if there are other components which should be checked / replaced at the same time, i.e. that if the struts are shot there is ...
6
votes
3answers
11k views

2000 Ford Focus, low idle, stalling at lights, white smoke from exhaust - P0171 Code - problem?

I have a couple of issues which I hope are all related. The car is a petrol Ford Focus 2000 1.8. Seems to be listed as LX, but the engine is Zetec. When stationary, the idle is quite jumpy, and the ...
6
votes
2answers
406 views

2005 Honda Accord 4cyl revving idle when warm

My 2005 Honda Accord I4 is idling fine when cold but once warm it begins "revving" on its own between 1200-2000RPM at about 0.5Hz. The vehicle initially threw a DTC P0507 ("Idle Air Control System RPM ...
6
votes
2answers
1k views

Suzuki GSXR600 (K7) - Burned regulator/rectifier

I have managed to completely fry regulator/rectifier on my Suzuki GSXR600 (K7). I suspect that it happened when I blindly splashed into a big water pond, so some water probably got on connector. Thing ...
6
votes
3answers
4k views

Troubleshooting 'random' clutch problems

I've got a customer who came in complaining that the clutch pedal had gone 'funny': it wasn't 'coming back up' like it used to. As he was in for service anyway, we replaced the clutch fluid, and it '...
6
votes
1answer
87 views

How long would pouring a little oil into a spark plug well take to stop a car starting?

I realise this is a strange looking question! I'm in a country where many local mechanics unfortunately have a bad reputation for creating small problems while fixing other problems in order to get ...
6
votes
1answer
403 views

When should I change the oil, as the tech recommends or as my oil change light indicates

I have a Toyota Corolla 2008. It has an oil change light indicator. The tech at the one hour oil change place recommends to change it every 3,000 miles but the indicator light only goes off about ...
6
votes
1answer
3k views

What would cause a clutch master cylinder to go bad?

I have a 1980 Honda Prelude and have only driven it a few hundred miles per year for the 10 years I've owned it. Redid the clutch when I got it, with new cylinders and everything. Last week I got in ...
6
votes
1answer
301 views

Excessive Vibrations in Drive when holding down the brakes

I'm working on a 98 Mazda 626 GF 2L with an automatic transmission. While I'm used to driving manuals, I would say that the amount of vibration when sitting stopped in drive with the brake on seems ...
6
votes
1answer
20k views

What are the differences between a wet motorcycle clutch and a dry motorcycle clutch?

What are the differences between a wet motorcycle clutch and a dry motorcycle clutch? More specifically, what are the differences in applications performance reliability maintenance/repair
6
votes
2answers
27k views

Coolant/antifreeze leaking out of engine block (See photo/video)

I'm not sure exactly what is going on with my vehicle ('98 Wrangler, 4.0L), but it's pretty obvious something is wrong. I think I might have had some minor coolant leaking after the past few times I'...

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