If an engine requires a full battery charge or a battery charger connected to start, does this have any thing to do with the spide

my truck engine will not start unless it has a full battery charge or a battery charger connected or the alternator is operating. does this have anything to do with the spider injector?

My car has 90000 miles.
My car has an automatic transmission.

Experienced mechanics share their insights in answering this question :
Hi there. The spider injector is typically not impacted by the battery charge, as it delivers fuel as supplied by the fuel pump. In most cases, if you have issues as you’ve described, it’s due to the battery having low cranking amps and needing to be replaced. You might want to have a professional mechanic come to your location and complete a car is hard to start inspection to determine for sure what is causing your problems.

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While it is technically possible to charge your car battery by just idling, it`s not very efficient. You`d likely have to leave your car running for hours to even come close to a full charge. This is due to the amount of charge that is initially lost when cranking the engine.
A fully charged car battery will have 12.88 volts. Cars run on a 12-volt electrical system.
Once the battery is full, the charging circuit stops drawing power from the charger until such a point where it decids to resume charging. Assuming a properly functioning charging circuit you cant add excess energy to the battery.
If your car, particularly the battery, is new and in good condition, the charge will last about two weeks without needing to start the vehicle. But the general recommendation is to turn the ignition on for 15 minutes once a week to ensure a proper recharge.
While idling older vehicles for 15-20 minutes may give them enough of a charge to restart, this approach is generally not recommended. Many modern cars are equipped with sophisticated battery management systems that are designed to help extend battery life.
Without any unnecessary details, a car will need anywhere from 400 to 600 amps for its battery to start. However, there are cases where smaller cars only take 150 amps to get their batteries going. Larger vehicles like trucks will require much more to start –up to 2,000, to be exact.
A fully charged 12 volt battery should read at 12.6 volts on the multimeter. If the reading is lower than this, you`ll want to charge your battery with either a battery charger or by taking your car for a drive.
Ans: Typically, 12.2 volts may not be enough to start a car. A fully charged car battery should have a voltage of around 12.6 volts. When the battery voltage drops below 12 volts, there is a possibility that it won`t have enough power to start the car.
Check the voltage

Check the voltage of your battery using the voltmeter to help determine your next course of action. 12.6V volts or above – Your battery is healthy and fully charged.

In simple terms, charging an EV battery to 100% will lead to a reduction in the total usable capacity of the battery. It might not be noticeable at first, but your battery will gradually lose its range as it degrades over time.
When you buy a car battery, it typically comes sufficiently charged to start your vehicle, to around 90% of capacity or so. It isn`t required to charge a car battery before its first use. However, under normal driving conditions, the alternator is unlikely to charge your battery to full capacity.
Some cars will get up to five or six years out of their battery, while others will need a new one after only two years. In general, your car will usually need a new battery after three to four years. Replacing your car battery is another part of routine maintenance.
Your car`s engine will eventually shut off if the battery fails; this means nothing but trouble when you are in the middle of the road.
Most car batteries will last between 500 and 1,000 charging cycles, which works out to a lifespan of between three and five years, depending on driving and weather conditions.
How long does it take to charge a car battery with a 12 volt charger? Car batteries usually hold 48 amps, so it will take about 12 hours to reach a full charge using a 12 volt charger.
The primary factor in determining the number of CCAs necessary to start a vehicle is the size of the engine. The standard recommendation is that a vehicle battery should possess at least one CCA for every cubic inch of engine displacement (two CCAs in the case of diesel engines).
On the low end, about 70 amps. On the high end, for a V8 with good compression, and temperature of -40, about 400 amps.
Fully-charged, most car batteries will measure at least 12.6 volts (~13.0-13.2V for OPTIMA YELLOWTOPs), but low voltage doesn`t necessarily equal a bad battery. Modern cars are very demanding from an electrical perspective, even when they`re not being used.
For a car with a 12V engine, the normal value before starting is between 11.9V and 12.8V, and it should not exceed 14.8V after starting.
With the engine off, the fully charged car battery voltage will measure 12.6 volts.
When fully charged, how many volts should a car battery have? charged automotive batteries should measure at 12.6 volts or above. When the engine is running, this measurement should be 13.7 to 14.7 volts.
The standard automotive battery in today`s vehicles is a 12-volt battery. Each battery has six cells, each with 2.1 volts at full charge. A car battery is considered fully charged at 12.6 volts or higher.
Voltage on a fully charged battery will read 2.12 to 2.15 volts per cell, or 12.7 volts for a 12 volt battery.
A good alternator should maintain battery voltage between 13.9 and 14.8 volts (14.2 is optimum). Even worst-case, with all accessories turned on, there should be at least 13 volts at the battery.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

If an engine requires a full battery charge or a battery charger connected to start, does this have any thing to do with the spide
ANSWER : Hi there. The spider injector is typically not impacted by the battery charge, as it delivers fuel as supplied by the fuel pump. In most cases, if you have issues as you’ve described, it’s due to the battery having low cranking amps and needing to be replaced. You might want to have a professional mechanic come to your location and complete a car is hard to start inspection to determine for sure what is causing your problems.

Fuel pump engages. Batery good, alternator good volts, jump start helps when wont start. Temp does not matter. Intermittent?
ANSWER : Hello. Thank you for writing in. There are several reasons your vehicle may only start when jump starting. The first and most common is a build up of resistance that is causing you to need a boost of voltage to get the engine started. This may be due to poor battery cables, a bad ground connection, a poor starter solenoid, and a couple of other issues. The first thing you want to do is perform a visual inspection of the starting system. Make sure there is no corrosion build up in the battery cables. You can also check the resistance across these wires and make sure you have a solid connection between components. You then want to make sure the starter solenoid is doing its job. It is responsible for taking the small amount of electricity sent by the ignition and turning it into a huge electrical charge that is strong enough to push over the engine with the help of some gear ratios in its favor. Do some more testing, and stick to the basics before assuming its something seriously complicated.

2005 Chrysler 300C changed battery and alternator. Car started, ran, and then battery light came on. Shut car off and wouldn’t start.
ANSWER : Hi. There is a couple of things that could be wrong here. The battery or alternator that was just installed could be defective. Theses parts need to be tested for proper operation. There also could be a fuse, fusible link, or wiring for the battery or charging system that is blown or broken causing the battery light to come on.

The codes that you have will cause the car to shut down, run rough, or not start at all. The crankshaft sensor and camshaft sensor should be replaced. I suggest having a certified technician from YourMechanic come diagnose the charging system and check engine codes to help you proceed with correct repairs.

Car left two days didn’t start third day, lights go on, no start up. AAA battery charger started car.
ANSWER : Hello. It sounds like you have a battery issue. If the jump starting got the vehicle going then that means that the battery alone could not produce enough power to start the vehicle. If the battery is low enough it can power some of the lights and other electrical circuits in the vehicle and just not crank it. If you want to have your battery checked, consider YourMechanic, as a certified mechanic can come to you to [diagnose why the car does not start] https://www.yourmechanic.com/services/car-is-not-starting-inspection

New battery & fuel pump. Hours later car starts and shuts down 3X in a row. Finally it starts, 48 hours later, won’t start at all
ANSWER : Checking all the fuses was a good move. I would also want to put a scan tool on it and check for diagnostic trouble codes (DTCs) as well as seeing the data that the computer is seeing.

A fuel pressure test would be a good idea to verify correct pressure and so that you’d be able to eliminate that possibility. It should be 58psi on your Magnum.

I also recommend getting your battery tested (I know, it’s new, have it tested anyway) and be sure it’s charged to at least 75%. And yes, loose battery cable connections can result in electrical problems.

If you need some assistance with this, consider enlisting a certified mechanic who can perform the checks I’ve mentioned and diagnose your starting issue firsthand. The mechanic can then perform the necessary repairs once the problem has been isolated. Good luck.

Just replaced battery now car won’t start on it’s own has to be jumped I charged the battery all the way now all it does is click
ANSWER : It sounds like you may have a faulty battery or possibly a bad connection somewhere. If the lights dim when starting the car, this suggests the system is straining to gather enough power to turn the motor over. I would recommend having a professional from YourMechanic come to your location to diagnose and test your battery to be sure it is properly charged and capable of holding a charge.

Vehicle won’t start, once it’s jump started it only stays running until you turn it off, then it work start again without jumping.
ANSWER : Hi there. There could be two problems here. It is possible that your battery is bad and will not take a charge from your alternator while driving. In that case every time you shut your car off you will not have enough juice to start it again. Inspect your battery – it should have at least 12.5 to 13 volts to start your car, if it doesn’t you will need to replace the battery. The second problem could be that your alternator is bad and not charging your battery, in this case you will need to replace your alternator. Both the battery and the alternator can be tested in your car. If you would like to have the car checked for you, a certified professional from YourMechanic can come to your car’s location to diagnose the starting problem and proceed with repairs.

My car will not start Intermittently. I purchased a new battery 2 weeks ago and yesterday the car wouldn’t start. Got a jump and
ANSWER : The issue you are having is probably due to an intermittent fault in the starter motor itself or a deficiency in the starter electrical circuit, for example a large voltage drop due to a poor ground or a high resistance connection. These issues can be readily diagnosed and resolved on a mobile basis if you request a hard starting diagnostic. If you request that diagnostic, the responding certified mechanic will get this resolved for you promptly. Based on Toyota’s Factory Service Manual, the battery should not be disconnected if the vehicle engine is running. The battery acts as a large resistive voltage sink and consequently taking the battery out of the circuit, while the alternator is still running, can create a voltage spike on the car’s electrical system which is not good for voltage sensitive components such as the engine computer. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.