Car won’t start but cranks

After adding $5 of gas, the car won't start. All it does was crank. Could it be the fuel pump or a sensor? It crank before, because we changed the battery and took it out to auto parts to charge it to be safe and brought it back and I guess that's when the problem started happening. Car been set for two years I believe.

My car has 124769 miles.
My car has an automatic transmission.

Experienced mechanics share their insights in answering this question :
It’s easy to check if the fuel pump is running. The pump is located under the right rear of the car ahead of the axle. You can lie on the ground and put your hand on it while a helper cranks the engine for a moment. Please be sure the car is in Park and the brake is on. You will feel the fuel pump kick and whir if it is coming on. If the pump is not coming on, it is probably a fuel pump relay failure; a common problem on your car. The relay is located near the battery. It’s about the size of a pack of cigaretts. It is side by side with the AC relay which looks just like it except the AC relay says KLIMA on top. The relay is expensive, so you want to be sure before you go shopping for one. If you would rather not gamble, or if your fuel pump turns out to be running you can have the car properly diagnosed by contacting Your Mechanic. They can send a technician to your home or office to check out your starting problem and tell you what it will take to solve it.

How to Identify and Fix Common car Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced mechanics :

Check Crankshaft position sensor – Crank No Start

When the motor crank position sensors fail, you will see the following symptom: The Mercedes-Benz engine is turning but won`t start because of the failure of its crank position sensor. Replacing the crank position sensor is simple and fairly inexpensive.

If the car cranks when you turn the key, but the engine won`t start, it could be because fuel isn`t getting to the engine. One potential reason for this could be dirty fuel injectors. Over time, the fuel injector nozzles can become clogged with rust, corrosion or debris.
The most common reasons a Mercedes-Benz 300SL won`t start are a dead battery, an alternator problem, or failed starter.
There are many causes of hard starting but illustrative ones are a faulty engine coolant temperature switch (sensor), malfunctioning idle air control (IAC) valve, vacuum and EGR leaks, inadequate fuel delivery or pressure (clogged fuel filter, injectors), and contaminated or old gasoline.
These are: Your key fob battery is low or empty. This prevents the Electronic Ignition System (EIS) from functioning. The Driver Authorization System (DAS) is not functioning, and thus failing to verify the key properly when inserted into the ignition.
“Whereas a standard 300SL is actually quite common among seven-figure classic cars, the aluminum Gullwing is one of the rarest production cars of all.
Odds are, if you smell gas while cranking the engine, it`s getting fuel. It`s probably not getting spark. Common causes for no spark: Bad crankshaft sensor. Bad camshaft sensor.
The engine won`t turn over. The most common signal that your starter has a problem is if nothing happens when you turn the key or push to start. Unusual noises, such as clinking, grinding and whirring. If you ignore these sounds, it can eventually lead to damage to the engine flywheel.
If your Mercedes is experiencing starting problems, then there could be an issue with the combustion process, originating likely from the fuel system, particularly the fuel pump. Occasionally over time fuel pumps can become clogged with residue and buildup.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

The car crank but won’t start
ANSWER : Hi there. This does sound like an issue with the wiring. If the check engine light is coming on every now and then this means that when it does not come on there is no power to the computer. This can be the wiring harness issue or an ignition switch problem. I would have to test for voltage to the computer when the problem is occurring to be able to find where the issue lies. If you need assistance, a certified YourMechanic technician can be dispatched to your location to inspect your vehicle’s non-start issue and suggest any necessary repairs.

Read Full Q/A … : Car won’t start but cranks

Car won’t crank when it’s cold and now won’t start at all
ANSWER : Hi there:

Usually this issue is cased by low cranking amps inside the battery. If you’ve recently had the battery replaced, it’s possible that an electrical component that makes up the charging system might be damaged or faulty. It’s also quite possible that the main electrical relay or the starter relay is giving you fits. To know for certain what the exact issue might be on your 1989 Toyota Camry, you should have a professional mobile mechanic complete a car is hard to start inspection, so they can pinpoint the source of your issues and recommend the right repairs.

Read Full Q/A … : Car won’t start but cranks

Map sensor car won’t start up good ?
ANSWER : Your MAP sensor is an important input for your computer. It helps determine the load on the engine to calculate the correct amount of fuel to inject. It sometimes takes a few seconds for the vehicle to realize that the sensor is not producing a good signal.

At that point, it will use other methods to determine the fuel rate, such as pre-programmed fuel maps, throttle position, etc. I would suggest replacing the MAP sensor and retesting. If you would like to have it checked first, a certified technician from YourMechanic will be able to scan your vehicle and test components to determine the root cause of your starting issue before making a repair.

Read Full Q/A … : Car won’t start but cranks

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.

Read Full Q/A … : Car won’t start but cranks

So I have a hyundai sonata se push to start. My car won’t turn on, power is working, I push tof start but it won’t crank. I don’t
ANSWER : Hi there. It sounds like you have a failed starter. However, without proper testing there is no way to be 100% sure. I suggest having the battery tested first with a digital battery tester that provides current voltage, cold cranking amps, and state of health. Also inspect for corrosion on the terminals and cables as this will cause excessive resistance and not allow proper voltage/amps to the starter. Other possible failures could be in the wiring harness, relay, fuses, or communication network. I suggest having a qualified technician perform an inspection to avoid replacing unnecessary parts. Your Mechanic has several available technicians that can assist you with a car does not start inspection.

Read Full Q/A … : Car won’t start but cranks

The car is having trouble starting up ,70 percent of the time it starts right up. the other 30 percent, it randomly won’t start its
ANSWER : Hey there thanks for writing in about your 1998 Honda Accord. This could be a few things. A faulty ignition switch, a failing crank sensor, or possibly other faulty sensors could be the cause. To have this taken care of, consider having a certified technician, such as one from YourMechanic, come to your car’s location to diagnose and repair the hard start issue.

Read Full Q/A … : Car won’t start but cranks

Car won’t start. The check engine light, battery light, and oil change light are coming on. I tried jumping the car and nothing happened. Why won’t my car start?
ANSWER : Hi and thanks for contacting Your Mechanic. If sometimes your vehicle will start with the new alternator and sometimes it won’t, then there is a loose connection in your charging system. Check all of the wires to the alternator and to the battery. Make sure that the battery cables are clean and tight. Make sure that the wires to the starter are clean and tight. A loose ground to the ignition system will cause the vehicle to not crank over. Check all of the ground wires from the battery to the starter. Make sure that they are clean and tight. If you need further assistance troubleshooting your no start situation, then seek out a technician, such as one from Your Mechanic, that can assist you.

Read Full Q/A … : Car won’t start but cranks

my 2003 saturn ion won’t start. it cranks but won’t start.
ANSWER : Hi there:

If you checked the oil and determined that there was no oil in the car, it’s quite possible that some internal engine components have seized up; which means there might be serious engine damage internally. Before you attempt to crank it again, please contact a professional mobile mechanic to complete a car is hard to start inspection; so they can pinpoint what is the source of your issues before it causes more damage.

Read Full Q/A … : Car won’t start but cranks