Concerning the main electrical system of a motor vehicle or internal combustion engine. Consider a different tag for radios and other such systems.

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1answer
199 views

Are there any modern diesel engines that require electricity to continue running?

I was reading this question about an owner checking the alternator by disconnecting the battery, which is an easy way to validate on a gasoline engine. The single answer assumes that the OP is ...
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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 ...
8
votes
3answers
538 views

Driving electric cars through large pools of water

The state of California is expected to be hit by a large storm in the coming days and there are frequently clogged drains in my town. I have an electric vehicle that seemed to handle driving through ...
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0answers
20 views

Intermittent power failure in hot weather 2007 escalade.

We have a 2007 escalade with 160k miles. The car runs great normally, but when the weather gets hot, an array of warning lights will come on from time to time, the power will drop for a moment (radio ...
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0answers
52 views

Sudden change of the odometer reading in Perodua viva elite

I have a Perodua Viva Elite auto gear car from December 2011. It was manufactured in 2011. The odometer reading the day before yesterday was 72000 but I noticed yesterday morning it reads near 61000. ...
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votes
5answers
51k views

Car won't start or stay running after a jump

I have a 2004 Kia Spectra 1.8, I have replaced the spark plugs, the alternator, and my battery is only about two months old. The car will start after a jump but it has to sit for about 10 minutes ...
6
votes
1answer
133 views

Low beam not working in headlight

I have a 1999 Miata, i bought the car for 750$ as a project car. it had some body damage but i figured i would fix it. The car is mostly done now, but i have one major issue. The low beams in my ...
4
votes
1answer
62 views

2006 Fusion, unplugged blue plug behind glovebox, now one headlamp and brakelight not working

06 Fusion SE 2.3L. AC wasn't working so I took advice from this instructables article and this video to do a quick temporary fix. I attached a 47kOhm resistor to the purple and yellow wires (top 4th &...
5
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1answer
10k views

Will a BCM prevent a car from starting?

I've been dealing with an issue for over a year wherein my 2005 Pontiac Grand Prix starts sometimes and does not start at other times. I had the issue diagnosed last year by the GM dealership. They ...
2
votes
2answers
47 views

What could be causing battery drain on a 2009 Honda Pilot?

My sister has a 2009 Honda Pilot that's got some issues with the electrical system. The battery frequently drains overnight (every other day or so). When driving a lot (several hours or more) the ...
7
votes
1answer
94 views

Alternator isn't charging battery properly. Replace or swap regulator only?

I have a 2015 Honda Fit EX. On my dashboard, there is a small screen that has been displaying "CHECK CHARGE SYSTEM" and displaying warning lights (TPMS, power steering, and stability control). I ...
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vote
1answer
50 views

1988 RX7 not turning over

While trying to start my RX7 all I hear is a click coming from the dash when I turn the key. When I stop turning the key to start it I hear another click coming from a relay above the visor located ...
3
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1answer
40 views

WV Golf IV '98 - Right side blinkers not working on signal

I own a used VW Golf IV, 98, 1.4. I am facing a really strange issue the last few days. When I turn my hazzards on, every bulb works well and on time. When I signal left it works too. The problem is ...
3
votes
1answer
71 views

1988 RX7 not starting, buzzing

I recently obtained an RX7 and was told it worked fine but would not start due to the clutch going out while it was sitting some wires near the alternator were chewed by rats too, so after the wires ...
4
votes
3answers
42 views

Electrical - Low beams out, high beams still work

I have a 2001 Mitsubishi Lancer CE, unfortunately both low beam headlights don't work. However, high beams and parking lights both work. I've checked the fuse, relay and bulb, all appear to be working....
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votes
3answers
226 views

Boat Not Getting Power to the Starter Motor

Just rebuilt most of a 2 stroke jet boat. ( if you need / want any boat details, see: this thread ) First day the boat started fine, no problems, next day I tried again and the CDI fuse had blown ( ...
6
votes
1answer
92 views

Effects of shutting off Nissan altima (or any car) while in drive

Every now and then when I get home after a long day, I pull into my driveway and while the car is stopped (foot on the brake), I turn the vehicle off without putting the vehicle in "Park". Car is ...
2
votes
1answer
21 views

Troubleshooting wires and fusable links in '96 Dodge Dakota 4 cyl. 5 speed manual

On the AC compressor, what wire is hot? Black with white stripe or solid black?
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vote
1answer
2k views

Where is the coolant fan relay on a 2001 Monte Carlo SS

My check engine light is on. Shop failed the car for NY state inspection. Says I have a bad coolant fan relay. Where would this relay be located?
2
votes
1answer
48 views

Power to seperate starter switch only when motor isn't running

I need a circuit to disengage power to the start switch which is seperate from key switch when engine has started so there is no chance of accidentally engaging the starter with the already operating ...
6
votes
2answers
496 views

Can I avoid buying a ridiculously expensive replacement starter motor?

My situation can be described with a photo: That's my starter motor, which doesn't appear to be in a healthy condition. What I would like to know is, can I avoid spending over $500 on a new one in ...
5
votes
2answers
93 views

Electrical issue in vehicle - fuel gauge drops to zero when horn is activated

Here is what I have been dealing with. Posted over on my vehicle specific board, but no one seems to have any idea. Instead of reposting everything hashed over there, I will post the original question ...
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3answers
3k views

1997 Honda Civic won't start; stuck in park

Last Sunday I was driving home and noticed my dash had no lights and my power windows would not roll up. As I pulled into the driveway to park I tried to put the car in reverse. As I did so the ...
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votes
2answers
15k views

why doesn't my motorcycle power on?

I have a Suzuki sv 650 2007. My bike recently turned on head lamps, tail, and gauges. Now it won't power on at all, not even a jump start can turn the power on. What can I do to solve the cause? Does ...
2
votes
1answer
33 views

Light bar vs Car battery

I have a light bar that pulls close to 22 amps how long can I have it on and my jeep off without hurting my battery?
7
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1answer
84 views

No power to my 1988 LS650 Suzuki with new charged battery

I have a 1988 Suzuki LS650 Savage from someone who jumped it off with running car. Put a new battery in it and now I can't get any power. No lights or anything. What do I need to check?
2
votes
1answer
36 views

1999 Katana 750 will not start

Rode it today ran fine. Come back home and I stalled it. 20 minutes later I turn the key to ride it again and nothing. I have no lights of any sort. I did check the fuses and they seem ok. What else ...
7
votes
2answers
60 views

Semi-permanent power inverter

I'd like to install a semi-permanent 500 watt inverter connected to the car battery for greater power delivery. The battery is in the passenger area, so there's no need to run wiring through the ...
4
votes
2answers
71 views

Why do the running lights turn on when the car is off?

I have two questions and they may be related, but I'll pose the most important question first. A friend owns a 2006 Chevy Malibu. Recently the running lights began randomly turning on when the car was ...
5
votes
1answer
87 views

Diagnosing fuel pump relay on 2004 Acura TSX

My wife's '04 Acura TSX began having issues starting towards the end of last summer. It would turn over just fine, but took 5-10 seconds to actually start running. The problem was intermittent - some ...
5
votes
1answer
32 views

Low beams don't work but the high beams work in a 2002 Toyota Tacoma

I have a 2002 Toyota Tacoma Pre-Runner where my low beams don't work but my high beams do work. I've replaced the headlight bulbs and relay switch, and still the low beams don't work. Any ...
4
votes
2answers
7k views

Could less than optimal battery charge prevent starter bendix drive from engaging flywheel?

With a less than optimal 12.2 volts at the battery terminals and the bendix drive at the starter failing to pop and engage the flywheel, would battery charge be a likely cause of such a failure? Or ...
5
votes
1answer
28 views

Replacing interior lights with LEDs (2003 Jeep Liberty)

I replaced the bulbs in the interior dome lights in my jeep with LED's. In front, there are two lights - driver and passenger. In back, there is one. The old lights were too dim, the new LED's are ...
3
votes
1answer
39 views

Blown fuse on K1 GSXR 600. Fuse replaced, but still no power

I have a GSXR 600, and the live side of a circuit touched the frame and blew a 30A fuse. I changed the fuse and now I have no power. Does any one now why? Thanks
2
votes
1answer
45 views

What does the OBD error code P0100 mean?

What does the OBD error code P0100 mean? I have an engine misfire with the check engine light on in my Nissan N16 Supper Saloon -1300cc - 2000 model year. The engine started to produce less power. An ...
12
votes
1answer
11k views

Do I have to rely on wire color to correctly wire up an O2 sensor?

It seems that everyone and their grandmother has a different color-code convention for 4-wire O2 sensors, which complicates matters when one is trying to wire up a replacement "universal" O2 sensor. ...
1
vote
1answer
32 views

Lawn tractor won't start

Not sure if this is the right stack exchange forum to post this in or not, hoping it is... I have a Toro lawn tractor which is having issues starting. I have been using it fine for the last few weeks ...
4
votes
1answer
41 views

2009 Toyota Camry's brand new OEM power window master switch won't control the drivers window

Why would the driver's side window operate perfect with the original master switch but not work when I install a new power window master switch? I purchased 2 new aftermarket power window master ...
4
votes
0answers
56 views

starting a diesel tractor

I have a diesel tractor with a generator.after sitting for a long period the battery was low so I used a portable jumper battery but mistakenly hooked up the cables in reverse. this caused smoke to ...
0
votes
2answers
31 views

86 ford ranger wont start

For awhile my trucks ignition has been acting up and I would have to roll the ignition. back and fourth several times before it would start but one day I went to crank it and the truck acted like it ...
6
votes
3answers
29k views

Low beam headlights don't work, High beam headlights do

The vehicle is a 2003 Chevrolet Trailblazer. The low beams aren't working. High beams are. The fuse is perfectly fine (tested and swapped out). The bulbs are fine too. A mechanic told me it could be ...
3
votes
2answers
64 views

Replacing a boats blown CDI fuse

Just rebuilt most of a 2 stroke jet boat. ( if you need / want any boat details, see: this thread ) Yesterday she fired right up no problem, today she won't even turn over. After some basic ...
2
votes
1answer
820 views

Mitsubishi L200 Warrior rear electric window issue

My rear window has stopped working and the interior light in between the front and back seats as well. I can find the interior light fuse, although the interior light by the rear view mirror works. ...
0
votes
0answers
19 views

1999 Jeep Cherokee 4.0L engine

Where can I get a wiring diagram for a 1999 jeep cherokee? I am having problems with a couple fuses blowing in the power distribution center under the hood and it causes the check gauges and check ...
2
votes
2answers
36k views

Low beam headlights out, High beam working

The patient is a 1996 Chevrolet Caprice with dual-filament bulbs. Both filaments in both bulbs light up in high beam mode, but no filament on either bulb lights up in low beam mode. What could be ...
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 ...
4
votes
2answers
80 views

Vauxhall/Opel Astra H How to remove front door electrical connector

The front door electrical connector on the Astra Mk5 H, is a rectangular multiplug. Is there a special technique for pulling it off. Are there clips which must be released first? Any tips ...
9
votes
1answer
147 views

What is this extra light on my headlights?

I own a 2006 Mazda 6 Luxury Sport in Australia, and the front headlights have 4 lights on them: It also has a fog light, which is not featured in this photo (but will be visible in later photos). ...
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2answers
104 views

2008 Genuine Buddy 125cc - Starting Problem

I bought Genuine Buddy yesterday on craigslist rode it home and of course it won't start this morning. The battery works(the turning signals and hazard lights work), and the gas tank is full. It ...
4
votes
1answer
3k 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 ...