Skip to main content
28 votes

Why do cars have plastic shrouds over the engine?

Mostly the point is, to make it "look good". There is arguably some protection for wires and pipes underneath against animals chewing on them, depending on how its implemented. Also, on some models ...
Daniel's user avatar
  • 1,072
18 votes
Accepted

Why do cars have plastic shrouds over the engine?

The cover is not purely cosmetic and serves several purposes, one is to reduce engine noise. You often notice there's foam on the inside and they fit over components such as cams and injectors. A ...
user71659's user avatar
  • 439
18 votes

Car imitates dead battery but comes back to life ~30 minutes later and lets me start it

Since you lost power to your 12v accessory socket at the same time as the other systems, I can’t see this as being an computer malfunction. This sounds to me like you have a fault in your main fuse ...
HandyHowie's user avatar
  • 25.4k
17 votes

Is it absolutely necessary to replace all four tyres on a manual 2008 Subaru Impreza?

Driving around with tires of different rolling radii will cause the viscous coupling to get hot / overheat and eventually fail... As it will probably happen long enough after the tire fitter did the ...
Solar Mike's user avatar
  • 34.6k
15 votes
Accepted

How exactly does Sport Mode work in an automatic Subaru Outback?

Sport mode will "increase pickup" by providing a more instantaneous response to throttle inputs. As akadian mentioned, the car will stay in lower gears as you accelerate, allowing the engine to stay ...
MooseLucifer's user avatar
  • 6,007
14 votes
Accepted

Strange overheating behaviour

While the other two answers were ones that were going through my head while I was waiting for the service truck to arrive, the actual problem was much simpler (although much more expensive to fix) ...
Rory Alsop's user avatar
  • 18.6k
14 votes
Accepted

Why is a 12V outlet that provides 120W protected by a 20A fuse in my 2015 Forester?

The purpose of the fuse is to limit the current in the wire to prevent it from overheating. That could cause the insulation to melt or even start a fire. The other components in the circuit will (...
dlu's user avatar
  • 14.5k
12 votes

Why do cars have plastic shrouds over the engine?

The other function can be to control cooling airflow, so yes, get them to put it back - even if they have to buy one...
Solar Mike's user avatar
  • 34.6k
11 votes

Why is a 12V outlet that provides 120W protected by a 20A fuse in my 2015 Forester?

The fuse is for the entire circuit. There may be other things on that circuit, sharing that 20A fuse. Also, the gauge of wires used in a circuit is part of the "safe" current limits (maybe why your ...
tlhIngan's user avatar
  • 12.2k
11 votes
Accepted

Is it worth replacing the entire clutch assembly when the clutch release bearing fails?

At ~110k on the clock it's quite likely that it's the original clutch, and if so you're going to be significantly closer to the end of the clutch's life than the start. Given the big labor cost/...
motosubatsu's user avatar
  • 10.2k
10 votes

2006 wrx overheats going slow but not at speed

I don't think there's any reason to suspect a head gasket right off the bat like that. The first thing that comes to mind is the electric cooling fans. They are on the car specifically to keep it ...
JPhi1618's user avatar
  • 13.2k
10 votes
Accepted

How much room do I need to avoid carbon monoxide poisoning?

Is your Check Engine Light on? That's a rhetorical question, what I mean to say is that if your ’04 Forester is in good tune, it really should not produce that much carbon monoxide. Also, there are ...
SteveRacer's user avatar
  • 12.4k
10 votes
Accepted

Car imitates dead battery but comes back to life ~30 minutes later and lets me start it

You may have a loose or corroded engine ground connection. The next time you have the electrical failure, leave the ignition switch ON and, using a voltmeter, measure voltage between the negative post ...
MTA's user avatar
  • 6,609
9 votes

2004 Subaru Forester black smoke oil not accelerating

It sounds to me like you 'windowed the block'. When you lost oil pressure, you were at highway speed, so your engine was spinning decently fast, and every revolution without oil does more damage. I ...
rpmerf's user avatar
  • 8,403
8 votes
Accepted

Buy a car for cheap to avoid registration costs?

The rules depend on the state, but if you're telling the state you paid less than you did, that's Tax Fraud. In Texas, they don't even let you do this, however. The state maintains what is basically ...
JPhi1618's user avatar
  • 13.2k
8 votes
Accepted

2007 Subaru Outback 'Leak' ... what is it?

The oil seen is from the block to cylinder head gasket seam. This is a nearly universal problem on Subaru 4 cylinder engines from the late 1990s well into the 2000's. The average mileage that this is ...
Fred Wilson's user avatar
  • 11.6k
8 votes
Accepted

Torquing Strut Nut with Tire on Ground

You should leave them just about snug, if not just a little loose. If you tighten them before you put it on the ground, when you do get the car on the ground, there will be tension on the parts, which ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
7 votes

Strange overheating behaviour

I am leaning toward the water pump. The cool radiator and heater core are a sign that the hot coolant is not being moved around. Coolant should always flow through the heater core while the ...
rpmerf's user avatar
  • 8,403
7 votes

2003 Subaru Outback Legacy, Blown Head Gasket

Coolant can definitely leak into the combustion chamber with a blown head gasket. Whether or not this is the cause of your power loss is hard to say. The amount of coolant going into the cylinder ...
Dalton D's user avatar
  • 1,958
7 votes

2004 Subaru Forester black smoke oil not accelerating

My son had an engine failure on a 2015 WRX, same exact symptoms, connecting rod broke and punched through the engine block on the top side, breaking open an oil galley. 10K mistake after playing with ...
Moab's user avatar
  • 7,990
7 votes

Bottom of Impreza banged driveway apron

If it hit directly under the front seats, there shouldn't be much to worry about - most of the important bits are further forward or further back. as @spicetraders says, try to have a look underneath ...
Nick C's user avatar
  • 28.8k
7 votes

Bottom of Impreza banged driveway apron

Your car is ten years younger (and has 1/10th the miles) but I suspect I know exactly where you hit. Most likely, the scrape you heard was the plastic under tray. This piece does what it says on the ...
Bob Cross's user avatar
  • 24.4k
7 votes

air pressure in low profile tires

You don't have to regularly put air in low profile tires. Have the tires checked to see if there's a problem - an ill-fitting bead or a nail.
PeteCon's user avatar
  • 8,712
7 votes

air pressure in low profile tires

Low profile tires tend to be installed on nicer alloy type wheels. Fancy alloy wheels are highly susceptible to sealing issues as it's easy for them to become damaged and have corrosion form causing ...
Brian Knoblauch's user avatar
7 votes
Accepted

High-mileage transmission with no known oil changes. Safe to change fluid now?

If this were my vehicle, I would change the transmission fluid and filter. There is a baseless school of thought, more like an "old wives tale" that you will just cause damage by changing ...
jwh20's user avatar
  • 12.1k
6 votes

Hesitation or low power at slow acceleration

Just resolved a similar problem on '03 Forester 2.0 turbo. Car would not respond for 2 to 3 seconds when the accelerator pedal is pushed. Also, when it finally kicked in it lacked power. I did not ...
Dee Amek's user avatar
6 votes

Oil Change Steps? (check my list) 2014 Impreza

Here are the instructions per your owners manual. If all else fails, go back to the manual ... you can almost never go wrong by doing so, especially if you still have warranty left on your vehicle. ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
6 votes

How exactly does Sport Mode work in an automatic Subaru Outback?

Typically, a spirited driving style involves staying in gears until the higher RPMs to make most out of each gear. This generally provide mode torque and more enjoyment. With this in mind, it's easy ...
Yousend's user avatar
  • 467
6 votes

1997 Subaru WRX STI Type R - Strange and occasional turbo lag

Too long for comment, but I suspect wastegate linkage or door not closing fully due to distortion from heat (it's really hot around there). You could try and get it hot enough to duplicate the ...
SteveRacer's user avatar
  • 12.4k

Only top scored, non community-wiki answers of a minimum length are eligible