Ford Mustang wont start causes and how to fix it
Ford Mustangis a reliable road companion, but its a machine with hundreds of interconnected parts, and like any other machine it sometimes fail to deliver normal operation. In this article we go through most common causes of Mustangs breakdown and how you can fix the problem.
The most common causes that hinders normal starting operation of your Mustang are dead key fob battery, dead 12v battery, corrosion on battery terminals, bad alternator, clogged fuel filter, broken starter, blown fuse, empty gas tank, immobilizer error or any fault in the electrical system.
1. Weak Battery
If your Mustangs engine wont crank or cranks very slowly, then the most likely culprit is a weak or dead 12v battery. Investigating more closely and doing a battery voltage test will clarify whether the starting problem is due to the battery. A test can be done to measure the voltage between the battery poles, check the acid level and assess the condition of the starter battery.
If a new car battery has been installed, the battery may not have yet reached its full capacity. There is nothing to worry about. A new battery only develops its full capacity over time.
Test 12v battery
The voltage of the battery on your Ford Mustang can be measured precisely with a multimeter. Before the test, the multimeter is set to the voltage range of the battery and connected to its plus and minus poles. Successful testing of the car battery, i.e. checking the voltage, usually results in values of approx. 12 to 13 volts. Values above 14 or below volts require an expert assessment of the condition of the car battery. Because the battery may have a defect with these measured values and must be replaced.
Jump start Ford Mustang
If dead battery is the reason for the breakdown of your Mustang, you can easily jump start it using jumper cables and a healthy battery from another vehicle, or using a battery booster if available.
First connect red cable to the positive terminal of your Mustangs dead battery, then to the positive terminal of donor battery. Next connect black cable to the negative terminal of donor battery, then to the bare metal in the engine bay of your Mustang. Start the donor vehicle and then your Mustang. Remove the cables in reverse order.
2. Corrosion on battery
Corrosion on the contacts of your car battery leads to loss of contact and reduced current flow, which means that your engine can no longer start properly.
To know if your Mustangs starting problems are from dirty battery contacts, you need to investigate them. If you lift the rubber covers over the two battery terminals, you can check the terminals for corrosion. If you discover white deposits or silvery-green deposits, but no further cracks or damage, you do not have to replace the battery, just clean it.
Clean battery corrosion
To clean the battery on your Ford Mustang, you have to remove the pole cables first, which requires no special knowledge, just a little concentration, as the order is very important. First remove the black cable from the negative pole. If the pole clamp is very tight, you can open it with pliers. We advise against using metal pliers, but if you use them, you must make sure that you do not touch any other parts of the body. Next you can unplug the red positive pole cable. Once the battery has been removed from the circuit, you can start cleaning the corroded battery. After cleaning, reconnect the terminals.
3. Weak key fob battery
If your Mustang has push start/stop button, then its possible that your vehicle may not start due to weak key fob battery. Dont worry, you can still start your vehicle the battery is only used to send the signal for locking/unlocking. If the key fob battery is empty, the door no longer locks or unlocks at the push of a button. The doors must then be opened manually. The immobilizer is controlled by a passive transponder. Passive means, among other things, that the transponder in the key does not need its own power source.
How to start Ford Mustang with dead key fob battery
If you have a model of Mustang which only has a key fob with start/stop button and no place to insert a key, then try placing your key fob as close to the start/stop button as you can and then start the vehicle. If it doesnt work, then look in your vehicles operational manual for exact location of key fob placement, as it may vary depending on model.
Tip: You can try starting your Mustang with its second key. It will also rule out any other problem with the first key, for example, water damage.
4. Broken starter motor
A starter is a motor for starting the engine of your Mustang. The average life of a starter motor is about , to , miles, and the life will be shortened if the engine is started more frequently. In any case, since the starter motor also has a limited life, it will break down after using the car for a long time, and if the starter motor breaks down, the engine will not start.
Symptom: When you turn the key to start the engine of your Mustang, you will hear a clicking sound, which is the sound of a bad starter motor. And if the starter motor does not work with a healthy battery, suspect a malfunction of the starter.
If the starter fails, it usually needs to be replaced with a new one.
Temporary fix for starter
If the engine does not start due to the starter, the engine may start if you turn the key while hitting the starter motor with something like a stick or metal tool. This workaround is effective when the parts inside the starter are stuck together or the gears are slightly out of alignment.
However, it is possible that the starter is nearing the end of its life, so it is recommended that you have it inspected at a dealer or maintenance shop.
5. Defective alternator
An alternator is a generator that produces electricity. If your Mustangs alternator fails, it will not be able to produce electricity and the battery will not be able to charge. Therefore, even if you think that the cause of the engine not starting is a battery failure and replace the battery, the battery will soon run out and the engine will not start.
Alternators rarely break down. In particular, modern cars have improved performance, so it is said that they will last , to , miles. Still, it can break down depending on how you use it, and in the case of a used car, the alternator may be quite old. Don’t let your guard down.
If the alternator breaks down, it must be replaced with a new alternator.
6. Clogged fuel filter
The fuel filter of your Mustang does not wear out like a mechanical part, but it gets clogged by dirt and airborne particles and clogs over time. The permeability of the filter drops, and so does the fuel pressure. To a certain extent this doesn’t matter, but if the fuel filter is too dirty, the engine will no longer perform at full capacity and in some instance may not start at all. Cleaning is not possible, you can only change the filter.
7. Fuel pump failure
If your Mustang’s fuel pump fails, then the engine won’t start. The pump normally ensures that the necessary amount of fuel is passed from the tank to the injection system of the engine with sufficient pressure.
Before your fuel pump stops working, it usually becomes noticeable: if your car’s engine breaks down from time to time, the car is difficult to start, the engine jerks a little or the engine performance drops, you should have your pump checked.
Wear or contamination of the pump can be the reason for this. If the pump is leaking, a power contact is broken, a line or a pump lever is broken, the fuel pump is usually also noticeable before failure. You can have a defective fuel pump replaced in your workshop.
8. Blown fuse
In rare cases, a blown fuse could also be the culprit in the breakdown of your Mustang. Check all fuses in the fuse box essential for starting the engine. But, be careful when lending a hand yourself to the fuse box! The box is under power and repairs or tests should always be done in a workshop.
9. Defective spark plugs
Without functioning spark plugs, the engine will not start. The spark plugs themselves are often not affected by a defect. Instead, plug connections on the ignition system come loose. If only one plug is actually loose, you can fix the problem yourself on site. If a spark plug has failed, it must be replaced in the workshop.
Rodent damage can be another reason why your Ford Mustang won’t start. The animals crawl under the vehicle and bite through cables and wires. In principle, this can affect all vehicle systems such as the fuel supply, the oil supply or the power supply.
The rodent damage can usually be seen quickly by looking into the engine compartment. The damage caused by the rodent bite can be repaired in the workshop. Be prepared for relatively high costs here.
Although very rare, but it can also be the cause of the breakdown of your Mustang. If a vehicle has an engine failure, then nothing works anymore. It is not uncommon for the driver of a vehicle to be responsible for such damage. Typical causes include tearing of the timing belt, incorrect fueling, insufficient oil, hydrolock, overheating of the engine, or continuous driving in an excessive speed range.
Only an experienced mechanic can diagnose engine failure in a workshop.
Use OBD2 scanner for diagnosis
Since Ford Mustang is equipped with on-board diagnostics (OBD), a fault diagnosis can provide initial indications of where the malfunction is located.
To begin troubleshooting, you must first connect the diagnostic tool to your Mustang. The OBDII connector is usually located under the dashboard. With the wire connected, you should turn the ignition on. But be careful not to start the engine. Most diagnostic devices then ask for some information about the vehicle. It is important that you enter this % correctly, otherwise the result of the search may be falsified. In addition to the vehicle manufacturer and model, you usually also have to type in the engine and vehicle ID number. For exact troubleshooting, always check whether the information is correct.
There are many reasons why your Mustang may not start. When looking for the trigger, it is advisable to use the exclusion principle and only start with the most obvious cause, the empty battery.
In any case, it is advisable for laypersons to call a breakdown service or a workshop. In the event of a defect, the latter can directly initiate the repair.
Mustang won't start all of a sudden, battery good
I have a Mustang GT with 58, miles that I've dealt with this issue twice now due to a dying battery in a key fob. Below is the solution that has worked twice for me. My aftermarket remote fob - not attached to key - with 4 buttons (lock, unlock, trunk, and panic) had a low battery that caused the dash lights/radio to flicker when attempting to unlock the car with the dying remote. Afterwards, the starter wasn't engaging at all. I blew fuse 46 20A in the smart junction box. After replacing fuse, starter would engage but the engine would not crank. Attempted jumping, removing battery and charging to full, using jumper from disconnected neg battery cable terminal to connected POS post in an attempt to clear pcm config, connected scan tool which was showing U (unreadable message from ABS module) and U (ABS Motor). The brake pedal was hard as a rock with maybe a half inch of play. Any attempt to touch the brake with the key in the ON position would throw voltage from to 6v and it would jump around between 6v, 9, 7, 10, 8 and after 10 seconds return to v. I thought I may have blown the Brake Boost Pump Vacuum. After many physical tests with a Digital Multi-Meter that showed nothing unusual, I cleared the Codes with my scan tool, pushed the brake AND HELD IT during the spastic volt shifts and waited until voltage returned to the original v. STILL HOLDING BRAKE down, after stabilization, I turned the key and the car turned over without an ounce of hesitation. I needed to clear the Codes once more after I reached my destination to rid the pcm of the logged volt fluctuation error when pressing the brake during the first good start since unlocking the doors messed up the computer. After the second clear, the car starts normally and there are no more voltage issues with brake pedal or dash/radio/any other components. I did try all of the above first and none of the above worked for me except what I have written here. Hope that helps someone and yes it does require you have a scan tool with the ability to clear codes to work. I have the OBDLink MX Bluetooth adapter and paid the 10$ for the extra package that allows module specific connection and clearing codes among a few other data point capabilities.
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Why won’t my Ford Mustang start?By Admin | Posted in Ford Mustang, Service on Friday, July 24th, at pm
It’s happened to all of us: It’s Monday, you’re running late for work, you spilled your coffee and now your car won’t start. “Why won’t my Ford Mustang start?” you scream to the world.
Unfortunately, as you will quickly discover, screaming, kicking and stomping won’t make your vehicle start, but that still leaves you wondering why?!
There are a number of reasons your vehicle won’t start, and whether this is fortunate or unfortunate is up to you, for the service experts at Akins Ford, it just gives us a challenge. We’re not saying that you will always have to bring it into a service center if your car doesn’t start, but we’re here to help, which is why we wanted to give you some inside information as to why your car won’t start.
This is the most common reason your vehicle won’t start, and unfortunately it is not out of the ordinary for this to also be the answer to that pesky question we asked before of “Why won’t my Ford Mustang start?”
First, check all of the battery terminals to make sure all plugs are intact and attached clear of debris. If you do see loose fuses or a corroded battery terminal, re-plug and clean off the terminals and try again.
Bad ignition switch
If your battery is fine but your starter is still silent and the vehicle won’t even click, it could be a bad ignition switch. If the warning lights on your dashboard won’t light up and your battery is clean and the connections are fine, it is likely the ignition switch. A quick test to do this is when you start the car, check if the dashboard lights dim a significant amount or turn off completely. If they do, your ignition switch is OK.
Bad starter connection
A bad starter connection can be caused by corrosion, similar to the battery. In fact, if the battery is corroded if can affect the electrical equipment, such as the starter.
If you have any questions or concerns, feel free to always give us a call or shoot us an email. You can also stop by any time!
This entry was posted on Friday, July 24th, at pm and is filed under Ford Mustang, Service. You can follow any responses to this entry through the RSS feed. Both comments and pings are currently closed.Sours: http://www.akinsford.com/blog/why-wont-my-ford-mustang-start/
It can be very frustrating when a vehicle wont start. There are many different issues that can cause the problem. This article is written with the assumption that you are looking for a way to get your Ford Mustang started now, and is meant to provide you with practical advice to help aid in the diagnosis.
There are really two main ways that a vehicle will not start. The first and most common is when it wont turn over. This just means that the engine doesnt move when you turn the key. The second way that your Mustang wont start is when the engine turns when you engage the starter, but it wont fire and run on its own. When the engine isnt turning over at all, thats a bit easier to diagnose than when it is cranking but not firing. Just use the jump list below to move to your particular situation.
Engine Not Cranking Wont Start
Engine Cranking Wont Start
Ford Mustang Wont Start: Not Cranking
There can be many reasons why your Mustang wont start. But, there are less things to troubleshoot than if it were cranking but will not start. Here are some of the most common issues that cause a vehicle to not crank:
1. Battery Cables
While the battery cables are not necessarily the most likely issue to cause your Mustang to not start, they are some of the easiest to diagnose. You can take a look at the battery poles where the cables connect. If there appears to be green or white corrosion all around it, cleaning them may help get you back on the road.
Heres a good article from Napa on how to clean a battery terminal properly.
2. Battery Charge
If your battery no longer has enough charge to turn the starter, your Mustang will not start. As a battery ages, its cranking amps decrease, leaving it with a diminished capacity for starting the vehicle.
When this happens, youll often hear the vehicle crank slowly, but not start.
You can take your battery up to the local parts store, or even Wal-Mart, and have it tested to see if it is still holding a charge.
- Battery is Dead If its dead, but charges back up and tests good, it would be time to check the battery terminals or have the alternator tested and see if it is properly charging the battery.
- Battery is Charged If the battery is charged, then it would still be advisable to take a look at the battery cables and see if there is an issue with corrosion. Otherwise, it may be the starter that you need to look at.
A bad alternator can cause your battery to lose enough charge to start your Mustang. It may have had enough energy to get you home, but when you go to start the vehicle, theres not enough stored energy for the engine to turn over.
The next thing to look at when your Mustang isnt starting would be the starter itself. When the starter isnt functioning, it is impossible to start the vehicle (unless its a manual, then you can pop start it).
If youve determined that a fully charged battery without corroded cable is the culprit, then its time to question whether or not you need a new starter. When a starter goes bad, they will usually not give you much warning first. Also, if you are stuck somewhere and are trying to start your Mustang, the old beat the starter with a hammer trick is not a wives tale. It really can get that one last start out of it.
Ford Mustang: Engine Cranks → Wont Start
There are a lot of issues that can cause your Mustang to crank, but not start. The engine needs air, fuel, and a spark in order to run.
It is highly likely that if the engine is cranking, but not starting that it has thrown an OBDII code. It is definitely worth it to use an OBDII scanner to check and see if the engine has thrown any trouble codes. It is highly likely that if your Mustang wont start that there will be codes. These codes will tell you what the computer is saying is wrong with your engine.
By looking them up on this site, or just Googling them in general will lead you to a detailed diagnosis of that code. Hopefully, once the code has been addressed your Mustangs engine will start again.
1. Fuel Issues
If your Mustang isnt getting enough fuel, or any fuel at all, it may have a bad fuel filter, bad fuel pump, or bad fuel injectors. Without the proper amount of fuel getting into the combustion chamber, the Mustang will crank, but not start.
2. Ignition Issues
One of the biggest issues that causes a vehicle to crank but not start is ignition issues. When there is no spark, the engine will not start. Youll probably have a misfire related code such as P, P, etc..
Ignition issues can be caused by many things, including bad spark plugs, bad coil packs, bad plug wires, computer issues, and more.
3. Engine Timing
If the engines ability to fire the spark plug at the right time is called timing. If the plugs are firing at the wrong time, or something has happened to cause the camshaft to no longer be in sync with the crankshaft, your Mustang wont start.
There will usually be OBDII codes associated with timing related problems, but not always. P is a common camshaft position related code. The crankshaft sensor can go bad as well. When these sensors go bad, it can be impossible for your Mustang to start.
Most modern vehicles come with smart keys that have electronic protection built in. This makes it more challenging for thieves to steal them. There are occasions where this security system will cause the Mustang to not start. Youll see a security warning when trying to crank the engine though.
5. Other Issues
There are a lot of issues that can cause your Mustang to not start. Thats why it is so important to check everything. Heres a great diagnostic chart that covers many different variables.
Conclusion: Ford Mustang Not Starting
There are many reasons that your Mustang may not start. Tracking them down can be downright challenging. With enough time and patience, you can diagnose exactly what is wrong. Good luck with the diagnosis. If there is anything that you would like to add, please leave a comment below. Thank you.
Mustang problems ford starting
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Especially attractive.NO Start problem on a 2007 FORD MUSTANG, No matiskloedizioni.com..
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Planned. Sergei, as the owner, said: So, that's it.