How to Troubleshoot a Ford Explorer Won’t Start With Full Accessory Power Active

The most likely cause of the Ford Explorer not starting when full accessory power is active is a faulty starter motor.

Full Accessory Power Active Car Won’T Start Ford Explorer

This article provides an overview of the issue of an inactive car won’t start – specifically a Ford Explorer with full accessory power – and possible causes for this condition. There are numerous things that could be causing the problem, such as a dead battery, blocked fuel line, faulty spark plugs, or a faulty starter motor. Depending on what’s causing the issue, a car owner may need to take their vehicle to a repair shop or try some on-the-spot repairs to get their car’s ignition system up and running again. This article offers tips and advice about diagnosing and fixing this full accessory power active car won’t start issue.

Battery Issue

If your Ford Explorer won’t start and you’re sure the battery and alternator are in working order, then the problem may lie with the starter. The starter is responsible for cranking the engine over, which allows it to ignite and begin running. If the starter is malfunctioning or has become worn out, then it will need to be replaced so that the car can start up again.

To diagnose a battery issue, it’s important to check for a dead cell in the battery itself. If there is a dead cell present, then it needs to be replaced as soon as possible. Additionally, you should check all of your vehicle’s connections for corrosion or dirt buildup that can prevent them from forming a solid connection with the battery.

Alternator Troubleshooting

The alternator is responsible for providing electrical power to keep your Ford Explorer running after it’s started up. If you suspect that your alternator isn’t working properly, then there are a few steps you can take to troubleshoot this issue.

First, you should measure the input voltage of your alternator by connecting a multimeter to its terminals or by using an OBD-II scanner to grab this data from your vehicle’s computer system. This should give you an indication as to whether or not your alternator is receiving power correctly.

Next, you’ll want to test its output amperage by connecting a load tester between its terminals and observing how much current is being generated by the alternator itself. If everything looks good here, then you can move on to other components in your vehicle that may be causing issues with starting up your Ford Explorer such as ignition system malfunctions or fuel delivery problems.

Ignition System Malfunctions

When diagnosing ignition system malfunctions on your Ford Explorer, it’s important to first check spark plug wear and tear. Worn spark plugs can result in poor ignition timing which can prevent your engine from starting up correctly. Additionally, broken connectors between wires going into and out of components like distributor caps and spark plug coils should also be inspected for damage as this could also lead to poor starting performance in your vehicle.

Fuel Delivery Problems

If there are no issues with either the battery or ignition systems in your Ford Explorer but it still won’t start up correctly then fuel delivery problems may be at play here too. A clogged fuel filter could prevent fuel from entering into the combustion chamber of your engine while a blocked fuel pump could prevent any fuel from reaching those chambers at all. To diagnose these issues further you’ll need access to specialized equipment such as pressure gauges and vacuum testers but if these tests point towards further issues with fuel delivery components then they’ll need replacing in order for you car to start again properly.

Computer Error Diagnosis

Finally, if all other checks have been completed without any definitive answers as to why your Ford Explorer won’t start then computer error diagnosis may help narrow down potential causes even further. Using an OBD-II scanner will allow you access into error codes stored within the computer system of your vehicle which can indicate potential issues with certain components like sensors or actuators that may be causing problems with starting up correctly too. Once these codes have been identified then appropriate replacement parts can be installed accordingly before attempting another startup test on your car again.

Check Crankshaft Position Sensor

When a car won’t start, one of the first steps is to check the crankshaft position sensor. This is typically done by measuring the advanced plugs timing angle and monitoring voltage signals from the sensor. It is important to have a professional mechanic evaluate the readings from this sensor to ensure proper diagnostics and repair of the issue.

Spark Timing Misfire Resolution

After checking the crankshaft position sensor, a visual inspection should be conducted to determine whether spark timing misfires are present. If it is found that there are misfires, then an electrically testing system should be used to further investigate the cause of this issue.

Vacuum Leak Troubleshooting

Vacuum leaks can be difficult to diagnose and can cause issues if not taken care of in a timely manner. Therefore, it is important to identify common locations of leaking and accurately test for vacuum levels. This can be accomplished by using a vacuum gauge or smoke machine tester.

Exhaust System Defects

A visual inspection should be conducted for any signs of obvious damage on the exhaust system. Additionally, listening for leaky tune pipes can help pinpoint any exhaust system defects that may need repair or replacement in order to get your Ford Explorer back on track.

FAQ & Answers

Q: What are the potential electric system issues that could cause a Ford Explorer not to start?
A: Potential electric system issues that could cause a Ford Explorer not to start include battery issues, starter issues, alternator troubleshooting, ignition system malfunctions, fuel delivery problems, computer error diagnosis and crankshaft position sensor problems.

Q: How can I detect input voltage for alternator troubleshooting?
A: To detect input voltage for alternator troubleshooting, you should use a multimeter to measure the input voltage of the alternator while the engine is running.

Q: How can I test for spark plug wear in an ignition system malfunction?
A: To test for spark plug wear in an ignition system malfunction, you should remove each spark plug from the engine and inspect it for signs of wear such as corrosion or cracks. You can also use a spark tester to check if each individual plug is sparking correctly.

Q: What steps should be taken to diagnose a computer error?
A: To diagnose a computer error, you should narrow down code diagnostics and install replacement components as necessary. You should also use diagnostic tools such as OBD-II readers and scanners to identify any errors and locate the source of the problem.

Q: How do I troubleshoot a vacuum leak?
A: To troubleshoot a vacuum leak you should first identify common locations of leaking such as intake gaskets or hoses. Next use an automotive vacuum gauge or smoke tester to test the vacuum level and look for leaks or loose connections that may be causing the problem.

Based on the limited information given, it appears that there is an issue with the Ford Explorer’s electrical system which is preventing it from starting. It could be a faulty fuse, a bad starter, or some other component in the powertrain. In order to diagnose and repair the issue, it would be necessary to have the vehicle inspected by a qualified technician who can use specialized diagnostic tools to determine the cause of the problem.