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Jump-starting a car: connecting black to the engine block

The question says mechanical connections and grounding wires are rarely designed for the high amperage The ground cable goes directly (and only) to the frame in this picture Image from Quora So ...
Weather Vane's user avatar
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10 votes

Is it harmful to keep 12V accessory on ignition start?

The reason for this warning is, when you start the engine of the vehicle, there is a large power draw. This drops the voltage which the Ecoflow battery will see from the charging port. When you shut ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
9 votes

I have a distribution block buried under my center console. Would getting 12v from that line vs directly from the battery present any fire hazard?

The fuses are there to protect the wiring, the fuse needs to blow before the wiring gets hot. You say that you have a fuse at the battery end of the 4 gauge wire, so that wire is protected against ...
HandyHowie's user avatar
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9 votes
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2005 Chevrolet Express 3500: Help Identifying this part

That should be the coolant temperature sensor and wires. I can't tell exactly where it is in relationship to the head/exhaust, but if it is the temp sensor, it will be located to the upper left ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
9 votes

Jump-starting a car: connecting black to the engine block

Compare the circuits formed by the two alternatives: positive jumper cable - positive recipient battery terminal - starter relay - starter windings - engine block - chassis - battery ground cable - ...
TooTea's user avatar
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6 votes

Jump-starting a car: connecting black to the engine block

If you examine your car or any other vehicle, try tracing battery ground cables. Most, if not all, battery ground connects to the chassis nearby, Chassis has a ground cable to engine block. From your ...
F Dryer's user avatar
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6 votes

Car loses all electrical on start up and then returns

This sounds like a bad ignition switch. Has your ignition key ever felt hot after you turn off the car? This was an early sign of failure. Start your car and remain parked. Now with the engine running,...
MTA's user avatar
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6 votes
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Can I reconnect a battery to pull up windows while alternator is out?

Yes, it should not cause any issues. Just ensure the larger red wire which would usually be connected to the alternator is isolated so it won't come in contact with a ground. As long as you do this, ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
4 votes

Can short-circuit during jump-start damage the vehicle?

Whenever you short jumpers like that, there's always a chance something can be damaged. In this case, however, since the car was still running and drove away, I'd suggest there's no worries. If there ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
4 votes
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How do I fix a broken connector inside the transaxle?

Here's what I did. Since both the connector and the port on the solenoid are plastic, I sort of plastic welded the two pieces together. Here's how I did it: I took an allen wrench I didn't care ...
Charlie Armstrong's user avatar
4 votes

Does the kilowatt rating of a starter indicate anything about the torque or quality of the starter?

Torque? Probably. Quality? Anybody's guess. Power demand? Definitely. I think you'll want to stay close to 0.9KW when you choose a new starter, and 1KW is close. Manufacturers don't spend money on ...
MTA's user avatar
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4 votes

Jump-starting a car: connecting black to the engine block

The question was "Do automotive manufacturers plan for this sort of jump start as part of their requirements?" And the answer is: yes. Every car I've ever owned has a section about jump ...
spuck's user avatar
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3 votes

1980 Oldsmobile 98 electrical system went totally off after attempting to start it

Paulster's probably correct, but another possibility is you may have blown a fusible link. That could happen if the starter couldn't turn the motor over for some reason and overloaded the circuit. ...
barbecue's user avatar
  • 1,597
3 votes

1980 Oldsmobile 98 electrical system went totally off after attempting to start it

First thing to do is to check the connections at the battery. Most likely one side has lost connection. If the connection point was a thin point (very small point of contact), when you tried to start ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
3 votes
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2015 Kia Forte Intermittent Low Voltage Occurrences - P0562

This very much sounds like your battery has an internal short which is intermittent. It could be the plates are coming in contact with each other some how and causing the short. Then when you jump the ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
3 votes

Prevent inline "waterproof" fuses from corroding

First of all, you need to clean them out. Use some vinegar to do this by soaking them in it. If you can't soak them in it, put as much as you can in the cavity of the fuse holder. Once the reactions ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
3 votes
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Wiring broke off under hood — What did it do?

I'm pretty sure this is a ground strap going to the hood. Why it's there, I don't know. Both my 2006 Silverado had one as well as my 2004 Suburban. Is it important? I really couldn't say. It won't ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
2 votes

2002 VW New Beetle battery discharges only while driving?

Agree with what MTA stated in comments. This is most likely a bad alternator. You state the voltage at the battery while running is ~12.9vdc. This isn't much more from what I'd expect to see a good ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
2 votes

Removing the cigar lighter socket in the Outback load area

The K tab may be a mechanical release when the solenoid release fails to unlock the fuel access cover. Your owner's manual should have info or try Subaru's website. As to power socket removal, try ...
F Dryer's user avatar
  • 985
2 votes

Engine swap & ecu

There are a few different ways to go with what you are trying to do. Piggyback the original ECU and use a VW ECU to run the engine. If you want the rest of the vehicle to work, you'll need the ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
2 votes

How does a scanner control electrical components?

If by a "scanner" you mean something on the lines of OBD2 or what have you, the answer is, they don't control the electrical components directly. They tell the ECU (or other controller) to &...
Pᴀᴜʟsᴛᴇʀ2's user avatar
2 votes

Door unlocking with signal sent over a phone call

You said: After hearing this I have tried with my coworkers and manage to unlock some of the cars via phone, but not every car on the parking. Let me guess how you did this: Your co-worker gives you ...
MTA's user avatar
  • 6,405
2 votes

Door unlocking with signal sent over a phone call

I'm not sure how that'd work, because a phone only transmits/transfers sound, not electromagnetic radio waves which you'd find being sent out by a remote. Mythbusters even did a piece on this calling ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
2 votes

Prevent inline "waterproof" fuses from corroding

You could also try silicone plumber's grease.
Carguy's user avatar
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2 votes
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2021 Toyota Venza Lighter Fuse Location

The fuse you want will be in the passenger compartment. The user manual for the vehicle shows the fuse box location -
HandyHowie's user avatar
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2 votes

I have a distribution block buried under my center console. Would getting 12v from that line vs directly from the battery present any fire hazard?

I've done somethign like this with my 50 year old landrover. Add a distribution sub-panel in a convenient place. Make sure the link to the supply is secured against chafing and so on, then branch out ...
Criggie's user avatar
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2 votes

Jump-starting a car: connecting black to the engine block

On many vehicles, where the battery is not in the engine compartment, specific jump start terminals are provided; so you don't have to dig around under the rear seat or in the boot [trunk]. This is ...
Tetsujin's user avatar
  • 217
2 votes
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Wipers no longer working - where should I start trouble shooting first?

Everything you're stating would lead me to believe the problem lies in the stalk. Losing them incrementally may seem weird, however, you've also got to remember, if one part of the stalk is going bad, ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
2 votes
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Toyota Vitz (Yaris) 1999–2005 broken side marker mystery

Yes, it's possible that the side marker cracked and fell off on its own. You see how your headlight lens is so badly weathered that it is no longer transparent? This is caused by 20+ years of sunlight....
MTA's user avatar
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1 vote

Right turn signals go faster overtime

This wiring diagram shows - Indicators - 13,16,45 and 46 Flasher relay (I believe) - 52 Indicator switch (I believe) - 43 Dashboard flasher repeater - 1 and 11 The flasher is common to both ...
HandyHowie's user avatar
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