6
votes
3answers
11k views

Intermittently fluctuating/non-functioning speedometer in Volvo 940. Possible causes?

I have a 1992 Volvo 940. A few months ago, the speedometer started malfunctioning intermittently. Sometimes it would read correctly, other times the needle would wobble around, and sometimes it would ...
6
votes
5answers
4k views

Does switching to neutral on an automatic transmission improve braking for immediate stopping?

I've been told that when needing to brake quickly, throwing the gear into neutral on an automatic transmission actually allows for better/quicker braking. I understand how things work pretty well but ...
6
votes
1answer
332 views

OBD2 and CAN-bus

Do all vehicles with OBD2 have a CAN-bus? Otherwise, what are the alternative buses used? Are there special versions of the buses for trucks and school-buses than for cars/suv/vans?
6
votes
2answers
910 views

Why are gears designed in this pattern in motorcycles? [duplicate]

On motorcycles with manual transmissions, the shifting gears goes (down to up) like this: 1st Gear (all down) Neutral (half up) 2nd (full up) 3rd (so on) What is the logic behind this? Wouldn't ...
6
votes
1answer
2k views

Heater smells like sulfur

I drive a 2006 Toyota Sienna. When driving with the heater on I often smell sulfur. This is more common when I am driving up a hill, but if I turn the heater off, the smell goes away. What causes this ...
6
votes
1answer
128 views

Starting using a deep-cycle battery

This weekend, during a camping trip, the starter battery on my 2001 VW Eurovan camper started to show signs of weakness - cranking was much slower than usual and took about 5 attempts to get the ...
6
votes
1answer
5k views

How to track down an intermittent battery drain?

I know there are several questions on here about finding the source of a battery drain (like Battery drains by itself when vehicle is parked (parasitic draw) ). However I don't think the answers ...
5
votes
1answer
65 views

Recondition clear coat?

The clear coat on my car's finish is getting kind of tired, dull and scratchy. Is there any way to recondition and renew it? I assume I will need to polish the existing clear coat somehow and then ...
5
votes
2answers
1k views

Royal Enfield Classic 350 - Motor Break-in Best Practice

How many km's should be driven with a lower speed to setup the bore for a Royal Enfield Classic 350, what is the minimum speed for that duration and how many km's should we maintain that lower speed?
5
votes
3answers
4k views

Ford Taurus common oil leak area?

On my last oil change, the technician noted some oil around top and side of the engine block and said there is a small leak. The only way to find where it is coming from is doing the whole dye test, ...
5
votes
1answer
1k views

Importance of engine compression ratio

Please explain the importance of Engine Compression Ratio. In Text books I could find the following importances Engine Cold starting Characteristics Torque Generated Fuel Consumption Noise ...
5
votes
1answer
5k views

toyota corolla 2001 air duct smell [duplicate]

My 2001 Toyota Corolla recently started smelling very foul whenever the air system was turned on. According to the research I've done online, there is no cabin air filter to change. The glove box ...
5
votes
4answers
469k views

The car won't start, not even click, but everything else works fine in the car

The car has powerful new battery (1 week old). I drove the car and after 4 hours, the car will not start, not even click when you try to start the car? All the lights are ok and they are not dim. What ...
5
votes
2answers
177 views

Is my gas pedal long enough to enable heel-and-toe shifting?

I've heard much and recently watched a video about performing the heel-and-toe technique. I tried some dummy actions, with my car shut off and in neutral but it feels too difficult to successfully ...
5
votes
1answer
75 views

Manual transmission noise

What causes a grinding or scratching noise when shifting from 2nd to 3rd Gear on a 2000 Celica GT? I did have my mechanic add some gear oil but was thinking maybe I should have him drain out old ...
5
votes
3answers
1k views

What exactly is a clutch?

I found out recently that the flywheel, driven by the crankshaft, is connected to (or part of) the clutch. I have a basic understanding of what a clutch does due to the fact that I know how to drive a ...
5
votes
3answers
28k views

Cost of replacing struts on a 99 camry - and is it doable on our own?

My girlfriend is having a heck of a vexing time with navigating her options for getting the rear struts on her 99 camry replaced. One major chain auto repair store quoted $580-$600 for the job. ...
5
votes
6answers
32k views

How Do You Keep Mold From Growing In a Non-Running Car That Has Leaky Windows?

I have a car that isn't running at the moment, but that soon will be. Where I live, it rains 7 days per week, and I've recently cleaned mold from the interior of the vehicle. What types of things ...
4
votes
2answers
248 views

Start a circuit or device when you insert key in car ignition

I want to start a circuit in my car when I insert my key in car ignition and let it turn off when the key gets removed. I have Honda Civic 2007. Can someone just help me out as to from where do I take ...
4
votes
1answer
167 views

Is it necessary to have the good car's engine running when jumpstarting

When jump-starting a vehicle, one first connects the positive and negative terminals between the two cars: positive to positive and negative (good battery) to a bolt head on the vehicle with the dead ...
4
votes
1answer
122 views

Evaporator canister purge system advice needed

1995 Blazer - 4.3 L Vortec V6 CMFI (vin W w/ PCM) 230,000 miles There are no trouble codes. This is a OBD-I or 1.5 system from a GM transitional year (I have the OBD-II style connector). I have ...
4
votes
2answers
164 views

Intermittent stall at idle

I have a 98 Saturn sw2 with a recent problem. Two times now it has stalled while idling and when it doesn't stall it floats near 500 rpms (Usually 750 - 950). The first time, it would start and just ...
4
votes
5answers
10k views

2006 Kia Sedona intermittently not starting

What could be causing my (non-)starting issues? Occasionally (once every two weeks or so) when the keys are inserted and turned to the start position, nothing happens. No noise, no dome lights dimming ...
4
votes
3answers
9k views

Tick Tick sound from a Royal Enfield Classic 350 at idle

I own a Royal Enfield Classic 350. At idle, the engine starts to produce a TICK TICK sound. However it vanishes when the rpm rises and when riding the motorcycle. This question is a very frequently ...
4
votes
4answers
91 views

Brake pedal is pulsing when I apply brakes? Is it caused by ABS?

I have had issues with ABS light for around a year where the light occasionally comes on and off. However, the brake pedal has been misbehaving only in the last two weeks and I am getting really ...
4
votes
2answers
971 views

How to remove droplets of paint on my car?

I'm not sure if its paint or cement, but my car is covered with droplets of it. I had my car washed, but its still there. Its removable if you scrape it with your nail. Is there any liquid material ...
4
votes
2answers
222 views

Is it reasonable to charge the customer $1000+ to assemble the top of the engine?

I recently have an engine overheat issue and see my previous post for details: How long does items in the engine last in general for standard size cars? This is an interesting follow up on that at ...
4
votes
3answers
8k views

How to test if head gaskets are blown?

Is there a definitive way to test whether head gaskets in most engines are blown, without actually reaching for the gaskets themselves (at which point you might as well go ahead and replace them) ...
3
votes
2answers
12k views

High-pitched squealing coming from engine

I've been told that a wet serpentine belt causes this. Is that true? If not, what else could it be? How can I fix this? This is a 2004 Chevy Trailblazer (4.2L 6-cyl. engine). I hear the noise ...
3
votes
3answers
97 views

I have replaced my brake cylinders, but the brake pedal goes to the floor

I have a '07 Silverado. Both rear wheel brake cylinders blew apart. I fitted new ones along with new shoes. I have bled the brakes but my pedal still goes to floor. What else can I do?
3
votes
2answers
10k views

Gas pedal not responding

It just doesn't work, as if I weren't even pressing it and it happens regardless of the speed. I have to turn the engine off and on again and it'll work for another 3 or even up to 20 minutes ...
3
votes
3answers
71k views

Possible reasons for loss of power, engine shaking, and smell of liquid fuel (not burning)?

The car (Renault Megane 1998 1.6e hatchback) lost power (about 500rpm in a bursty rhythm) after I re-ignited on a traffic light, the engine started shaking, and I could smell liquid fuel. There was no ...
3
votes
2answers
178 views

1.6 Petrol engine overheats intermittently

I have a Vauxhall Vectra 1.6 (2007). The cooling system operated perfectly (a few kms after starting the engine the needle was pointing to optimum temperature without the slightest waver). 2 weeks ago ...
3
votes
2answers
2k views

Occasional Vibration at specific highway speeds.

Symptom: At certain speeds (70 mph, 40 mph, etc.) there is a noticeable vibration. Vehicle: 1998 GMC Sonoma (2 wheel drive) The vehicle was purchased used and had similar symptoms at the time. ...
3
votes
1answer
174 views

Should replacing the brake pads make braking feel “softer”?

I've just had the brake pads replaced on my Skoda Fabia- apparently they'd worn very thin. But now when I brake I have to push down much harder on the brake pedal than before. Is this to be expected?
3
votes
3answers
6k views

Slow acceleration, high fuel consumption after spark plug change

I have a 2000 Ford Ranger 4.0 L V6 4x4 model. I recently was having some problems with the truck idling too low when cold and I decided to change the spark plugs. I put in 4 out of the 6 new plugs and ...
3
votes
3answers
7k views

turning right causing small vibration and noise

My 2004 Ford Focus makes small grinding and vibrating noises when turning to the right. The problem was much more severe earlier this month. I took it to the shop and had them get me new tires and an ...
2
votes
3answers
326 views

Is my mechanic ripping me off?

My 2002 ford focus (built after may 23) died and the AAA and tow guy both said that it needs a new fuel pump. Anyway I went to the mechanic and he said it'll be 350 for the pump and 200 for labor. I ...
2
votes
2answers
356 views

Mileage varies by driving at different speeds

I drive my car a lot. I do lot of experiments with speeds while driving. Following are my observations: Driving at 60 - 70 km/h gives maximum mileage Driving at 70 - 90 km/h gives good mileage ...
2
votes
1answer
42 views

What compressor type does 2010 Lexus RX450h use

I'm a student studying motive power program at a college. Our instructor gave us an assignment to find out the specific vehicle's compressor type and which component is used TXV (throttle expansion ...
2
votes
2answers
2k views

Hit a wall with my car how to remove paint?

Hit a wall with my door handle. What's the best way to remove paint? Thanks
2
votes
1answer
220 views

How to learn motorcycle maintenance theory

I'm a motorcycle novice and want to learn how to maintain a bike and fix problems that may arise. I've found a few great videos that have elucidated some basics: How a motorcycle engine works: https:...
2
votes
3answers
4k views

92 Civic engine won't start after replacing head gasket

I just replaced the head gasket in my 1992 Civic. Started it up before putting everything back together (just a second since it had no coolant, exhaust wasn't connected, etc.) and it ran fine. But now ...
2
votes
1answer
14k views

Check Engine Light on '94 Jeep Grand Cherokee

How do I get Check Engine Light codes (OBD-I) from a '94 Jeep Grand Cherokee, and where can I look them up?
1
vote
2answers
292 views

Removing rust / prepping for repainting

I have several developing rust spots on my car. What's the best way to remove the rust / prep the surface? I picked up a wire cup brush with a 1/4", but it's limited to 4,500 RPM. My tool options ...
1
vote
2answers
1k views

How do I know if I need new brakes?

I recently purchased a car with 135k miles on it and I have no idea when the brakes were last replaced. I've done work on my cars before but never have changed the brakes, so I'm not sure how to tell ...
1
vote
2answers
383 views

HVAC blowing out of defroster and floor

1995 Chevy S-10 Blazer - 4.3 L Vortec V6 (vin W with PCM) - 230,000 miles original owner. I changed my IAC Valve today, and coincidentally, my HVAC started blowing out of the defroster and floor no ...
0
votes
0answers
84 views

How to Get Basic Car Repair Knowledege [duplicate]

Possible Duplicate: Getting Started in Auto Repair I'm looking for some teach yourself sources for auto repair. I'd like to start restoring an old car in my dad's garage, but I don't have the ...
27
votes
7answers
5k views

What is the point of the exhaust?

I was thinking today, what is the actual point of an exhaust? Why can't we just have a pipe going out the front of a car instead of taking all the gases to the back of the car? I can only see ...
24
votes
7answers
110k views

Is it safe to drive a car that has a broken suspension spring?

Yesterday I was driving home from work and heard a loud noise which I can only really describe as a "clang". After looking at it today, it looks like the spring for the front left (passenger side) ...

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