7
votes
1answer
417 views

Why the different the colors of terminal corrosion on the battery?

I have a 2001 Ford Windstar. When I went to clean the battery terminals: the one with the RED cover over it was a bright blue color; the other had normal white corrosion. I do not know why the this ...
9
votes
5answers
1k views

How to become a self-taught amateur mechanic?

I'm a computer systems engineer (we did a lot of embedded systems and some electrical at university) and I own a Suzuki SV650S. I am considering doing several upgrades to it (e.g. replacing the front ...
2
votes
2answers
382 views

Erratic Oil pressure in a 2005 Chev 2500HD with 6 litre gas engine

Bought truck in April. about one month later oil pressure would drop to zero and warning message would display Low Oil pressure and warning chimes would go off. Local GM dealer tested with mechanical ...
2
votes
1answer
126 views

Coolant light is on even after topping off

2000 Pontiac Grand Prix Gte - My low coolant light came on so I parked let it cool down went to auto store n got the Dexcool antifreeze and filled it past the hot marker. Drove it on the interstate ...
3
votes
1answer
53 views

Utility trailer lights issue

My small utility trailer has sit here for more than a year. Now I found its lights don't work anymore. I used my multimeter to test the four wire harness and find the following: Connect any other ...
6
votes
2answers
229 views

What CAN'T the check engine light tell you?

Usually when something goes wrong with my vehicle the check engine light comes on. I had an issue recently where the check engine light did not turn on, but the vehicle ceased functioning. I read the ...
5
votes
3answers
5k views

Does revving a car when cold make it warm up faster?

As winter comes along, I've always thought that revving the car would make it warm up faster, so the heating works better to clear the icy/steamed up windows. Does revving my car at idle to about 2-...
4
votes
1answer
256 views

What is “Long Gearing”?

I see in some city car reviews, like the Citroen C1, that they have something called "Long Gearing". What is Long Gearing? What are the implications of it?
4
votes
0answers
43 views

Transmission not responsive - Dodge Durango 2001 slt 4.7

My truck was in a salt water flood when hurricane Sandy hit New Jersey. Since then, the motor was replaced, ECM computer, shocks, ball joints, hubs, rear, front calipers, power steering pump, A/C ...
4
votes
0answers
97 views

SAAB 9-5 wagon throws P1549 Code (Boost control valve)

I called an ASE-certified mechanic. He charged some $60 for the visit and $60 diagnosis and really he didn't quite spot on anything. Left me where I was - work-wise , diagnosis-wise and knowledge-...
8
votes
1answer
119 views

How do disk brake pistons retract?

If drum brakes consist of a several springs inside and outside the fluid cylinder to retract the brake shoes after braking, how disk brakes piston, that dont have any springs, can retract alone ...
2
votes
1answer
78 views

2001 honda civic with starter hesitation

Recently my civic has had a slight hesitation of the starter when first turning the key on an occasional basis. Yesterday turned the key and nothing, it didn't turn over. Plenty of electricity. 1 hour ...
3
votes
2answers
174 views

John Deere LX 266 lawn tractor engine dies

I have a John Deere LX 277 lawn tractor that has developed an engine problem that has my mechanic and me stumped. The motor in question is a Kawasaki FH500V (electric starter). While the engine is ...
2
votes
0answers
37 views

Fresh battery, no lights on 1979 Honda CB125 [closed]

I have a 1979 Honda CB125 that was running consistently about 2 years ago. It then sat for two years and the battery was corroded so I replaced it. I've made sure the battery is charged (I have a ...
1
vote
2answers
178 views

High beams always on, except when lights off

Irrespective of headlight switch on parking lights or on headlights Car: Honda CR-V 07 What's perplexing is why the high beams are on when the switch is in the parking lights position? Update New ...
1
vote
1answer
54 views

Why does my 2012 Honda Fit's engine oil quickly get dark but my ~2009 Ford Edge's oil seems to stay quite clear?

My brother's approx. 2010 Scion's oil seems to get dark rather quickly as well. I've heard that darker oil means that the oil is doing its job and keeping the engine clean by bringing the contaminants ...
1
vote
1answer
410 views

Can a crimped or improperly-routed turbo oil return line cause smoke?

After my car runs for awhile, it starts intermittently blowing smoke out of the exhaust, and from under the hood (near the turbo, but it's difficult to tell exactly where it's coming from). Problem ...
2
votes
3answers
259 views

Can a performance air filter cause a car to burn oil?

My oil light recently came on in my car. I parked on the side and checked it. There was none on the stick. I added 1 liter and drove about 500m to my garage. I asked him to do an oil change and to ...
0
votes
1answer
99 views

Loud clicking noise

It's a 2005 Jeep Liberty limited. Roughly 140000 miles. No major overhauls or problems previously. However today when I started the car there was a loud clicking or tapping noise when accelerating and ...
3
votes
2answers
169 views

Mechanic says that I must change tires with him before he will rotate them. Why?

I got an internet combo-deal to change oil and rotate tires at a shop in Sunnyvale, CA. However, now mechanic called me back and is telling me that I have to change all four tires due to the wear. ...
6
votes
2answers
2k views

How do parking brakes acting on disc brakes work?

My car has disc brakes in the rear, and the calipers have a small lever, which is pulled by the parking brake cable. (The parking brake uses the discs, so there is no additional drum or similar.) ...
1
vote
1answer
74 views

2002 Stratus doesn't crank when key turned (radio is also off)

When I turn the key, there is no response at all, the engine doesn't make any sounds like it's trying to crank, no clicks, or any other visual or audio response of any kind. The lights still work, as ...
2
votes
2answers
218 views

Plugs: One side dirty, one side clean?

I was just inspecting some plugs and noticed that on each plug, one side was relatively cleanish, while the other side was dirtier and had built up deposits. Why would one side be significantly ...
7
votes
2answers
435 views

What repairs can a garage do without asking for permission if the car is in for MOT and service?

I recently sent my car to the garage for its MOT and service. It's a 1999 Nissan Almera so I wasn't expecting it to pass without some work being done to it. However, when I got the invoice back it ...
0
votes
1answer
100 views

Does using heat in the car SAVE gas?

Its well known that using heat in a car is almost free (see for example here). It is also known that using the heat can reduce the engine temperature which otherwise needs to rely on water cooling. ...
2
votes
2answers
100 views

Ford Escort overheats when switching FROM highway TO city driving

I have a 1998 Ford Escort with 113k miles. It's never given me any major problems before, except for the AC going out about 4 months ago (details to follow). In the past week while driving with the ...
0
votes
1answer
51 views

can running just water ruin my water pump [duplicate]

I have 2005 Jeep Liberty, the radiator had a pin hole for the last few months i have been keeping water in it, then I had the radiator replaced yesterday and now i have another leak. I took the car ...
1
vote
1answer
72 views

Mercedes Benz- Atego truck indicator lamp not working

My Mercedes Benz Atego hit a cow and the right corner head lamp and indicator plus grill got damaged. I replaced the parts but now the right indicators have stopped working. What could be wrong and ...
4
votes
2answers
77 views

how do I fix a cracked cylinder head

Cylinder head has broken in a line about four inches long on the underside of the part of the head that the valve cover bolts onto. Can the head still be rebuilt or is it junk?
6
votes
0answers
66 views

1993 Merc 300SE always stalling soon after startup, fuel pressure tests > 50psi

From the moment car starts to the moment engine stalls, which is about 40 - 60 seconds, fuel pressure is always above 50 psi. Can I safely conclude stalling is not caused by fuel system problems? I ...
3
votes
2answers
130 views

All warning lights came on, the odometer did not.

I have a 2008 F150 160k miles and all of the warning lights came on (Check engine, ABS, low tire, parking brake, 4x4 Hi and 4x4 Low from what I remember). The odometer was just a blank green screen. ...
2
votes
1answer
37 views

I have a 1999 chevy blazer back wheel getting hot

The back wheel on the passenger side of the blazer is getting very hot, does not make any noise. The brake rotor the hub and the outside of the wheel will be hot after about 3 miles.
1
vote
2answers
265 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 ...
3
votes
0answers
91 views

2004 ford taurus - screeching sound when attempting to start the car

To start, I know nothing about cars aside from how to drive them. I have a pre owned 2004 ford taurus with 60000 miles. Recently, it has been making a screeching noise when I turn the key to start the ...
2
votes
1answer
193 views

Car shaking when braking

I got a used car. I notice that on speeds higher than 80Km and when I brake, the car shakes. The shaking is very soft, it is not tough and it is not every time. I noticed it twice on a 2 hours journey ...
4
votes
2answers
114 views

Toyota Sienna 2005 ignition switch issue?

Takes some time to start up Sienna. Have to take out the key, put it back, wiggle it around, eventually it starts. When it just started happening, we took it the Toyota Dealer and they replaced the ...
5
votes
8answers
7k views

Best way to remove broken bolt from intake manifold (broke nearly flush)?

While trying to remove the intake manifold from an old Ford 302 one of the bolt snapped off. As you can see below it is just about flush with the manifold (just below. What's the best way to get ...
5
votes
1answer
425 views

Paint is cracking and showing lines, like dried mud

4 years ago, after repainting my 1980 Chrysler LeBaron, I'm seeing many lines appear in the paint. These lines appear all over, but especially around corners, and much more on flat, upright facing ...
10
votes
1answer
362 views

2001 Infiniti QX4 rough idle - leaking fuel damper vacuum port

I have a bit of an involved problem, so I’ll break it down a bit and try to provide as much detail as possible. My main problem: I have a rough idle on my 2001 Infiniti QX4. It’s not extremely rough,...
3
votes
3answers
583 views

Pontiac Sunfire mysteriously won't start

So, here's the deal: -No lights, no noise, no clicking. -Battery voltage reads fine on multimeter. Terminals are very clean and not corroded. -But it won't jump start. -Headlights turn on. -Fuses are ...
0
votes
1answer
57 views

How to get in fourth gear

I have 2007 automatic Scion tC that I just bought and I was wondering how do I put it in 4th gear or (sport)?
2
votes
1answer
86 views

Wiring both reverse sensors & camera on reverse light - Short circuit threat?

I want to install both reverse sensors & screen+camera. My challenge is with the power wiring. Both the screen and the sensors controllers need these wiring: Power from the accumulator Control ...
7
votes
1answer
771 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 ...
4
votes
1answer
853 views

How hot does an exhaust manifold get?

If I want to use a non-contact infrared thermometer to read the temperature of each cylinder at the exhaust port during idle, how high of a reading should the thermometer be able to handle?
3
votes
0answers
134 views

Replace 2009 Cobalt LNF Fuel Tank Pressure Sensor and Shroud

How difficult is it to replace the fuel tank pressure sensor and shroud on a 2009 Chevrolet Cobalt (LNF/SS)? The shop just quoted me over $200 for this. From what I can tell, the parts should be ...
3
votes
1answer
700 views

Cleaning the gas cap to rule out that tightness is the cause of the “check engine” light

The gas cap on my 2003 Pontiac Vibe used to make a slight sound of "pssstt..", the sound of some air either entering or exiting from the tank as I was opening the cap. Two months ago, the gas cap ...
2
votes
2answers
106 views

Fuel gauge not accurate

This does not always happen but it has happened twice in last 6 months. My fuel gage is accurate most of the times but these two times it was showing that there is 10-15% gas in my tank but my car ...
2
votes
2answers
58 views

2006 Pontiac Montana

I recently purchased a 2006 Pontiac Montana and the dealership seems to have a done a pretty good job with pre-lot reconditioning. The filters were changed, oil, and a new battery and tires were put ...
5
votes
2answers
2k views

Why is cold-start fuel mixture enrichment necessary?

I know a rich mixture is more fuel added than air in the ratio required (14.7:1), but how can it affect anything? I mean, if fuel is added but with no air it can't combust, so how can that affect the ...
2
votes
4answers
241 views

High speed steering & wheel vibration

First post and I'm flummoxed. I have an 2009 Lexus RX350 AWD. At speeds of 70-75 one can feel the steering wheel vibrate fast. At 80mph(for testing purposes) it largely disappears. Back down to 65 the ...

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