I got a F350 Diesel I put a alternator on a new starter a new starter relay and new alternator and the starter stays engaged with
I have an F Ford diesel I replace the starter the alternator starter relay and the starter stays engaged and is running down my battery I hear wanting some what could it be
My car has 260000 miles.
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
Check the wiring on the starter to the ignition switch and see if they are crossed on the solenoid of the starter. If the wiring is crossed, the starter solenoid will stay engaged as the starter is engaged. If the wiring is hooked up normal, then the ignition switch maybe damaged causing the starter to stay engaged. If you need further assistance with your starter staying engaged, then seek out a professional, such as one from Your Mechanic, to help you.
How to Identify and Fix Common car Problems ?
Our sources include academic articles, blog posts, and personal essays from experienced mechanics :
Battery. A 7.3L Ford Power Stroke engine might crank over but will not start without sufficient voltage for the ECM. Low battery power also can prevent glow plugs from warming properly (in cold climates) and prevent the engine from turning fast enough to fire.
Problem Description
If the engine cranks but will not start, this may be caused by damaged wiring to the high pressure fuel pump. Wiring to the pump can be chafed, which causes the pump to stop working. The chafed wires will need to be accessed and repaired.
The first step in a 7.3 no start is to simply check the oil level. Yes the oil level. Your engine could be low by just 3-4 quarts causing a hard start. Unlike other diesel engines the Powerstroke has two oil pumps.
Bad Sensors
One common culprit for this problem is the crankshaft position sensor, which measures the position and speed of the crankshaft. The computer uses the information from this sensor to know when to fire the spark plugs. If the sensor isn`t working, the spark plugs won`t fire, keeping the engine from starting.
Problem Description. If the engine cranks but does not start, or starts and stalls, the fuses should be inspected, especially the power door locks fuse. The power door lock fuse provides power to a module that sends the Powertrain Control Module (PCM) the “OK to start” signal.
Fuel injection pressure
If your diesel engine won`t start, the problem could be the amount of pressure in the fuel system. The engine may not start if the fuel pressure is too low. Fuel pressure that is too high can cause damage to the exhaust system while also increasing soot pollution in the exhaust.
If your vehicle won`t start, it`s usually caused by a dying or dead battery, loose or corroded connection cables, a bad alternator or an issue with the starter. It can be hard to determine if you`re dealing with a battery or an alternator problem.
The 7.3 Ford Power Stroke engine is legendary in diesel circles. It is one of the main reasons the 1999 to 2003 Ford Super Duty trucks are still so popular today. Its reliability is unsurpassed and was produced just before emissions regulations added to diesel engines` cost, complexity, and reliability.
Starting a Diesel Engine Using the Glow Plugs
This is the most common method of starting a diesel engine. Like the air intake heaters, glow plugs operate from battery power to bring air in the combustion chamber up to the proper temperature.
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.
your car fails to start: the engine`s computer uses the map sensor to gauge atmospheric pressure before the engine is started. a false reading could cause too much or too little fuel to be delivered to the engine. both conditions could keep it from firing up.
Car Will Not Start: Over time, as the camshaft position sensor fails, the signal it sends to the engine control module weakens. When the engine no longer receives the signal, you will not be able to start your car.
If a diesel cranks but won`t start, it almost certainly a fuel problem, and the most common fuel problem is some air in the lines or a clogged filter. Bleed the fuel lines; if that doesn`t work, change the filter.
Fuel injection pressure
If your diesel engine won`t start, the problem could be the amount of pressure in the fuel system. The engine may not start if the fuel pressure is too low. Fuel pressure that is too high can cause damage to the exhaust system while also increasing soot pollution in the exhaust.
When your engine cranks but won`t start or run, it could mean your engine is having trouble producing a spark, getting fuel, or creating compression. The most common causes are problems in the ignition (for example, a bad ignition coil) or fuel system (for example, a clogged fuel filter).
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
I got a F350 Diesel I put a alternator on a new starter a new starter relay and new alternator and the starter stays engaged with
ANSWER : Check the wiring on the starter to the ignition switch and see if they are crossed on the solenoid of the starter. If the wiring is crossed, the starter solenoid will stay engaged as the starter is engaged. If the wiring is hooked up normal, then the ignition switch maybe damaged causing the starter to stay engaged. If you need further assistance with your starter staying engaged, then seek out a professional, such as one from Your Mechanic, to help you.
Just put a new carburetor, battery, starter relay, alternator, car stalls out while driving and battery dies when restarted
ANSWER : The battery should be load tested. Simply charging the battery or measuring voltage is not adequate. Measure charging output, too. You want to confirm that the ignition system, including for instance the ignition coil and ignition switch, are not intermittently cutting out. Coils can fail as temperature rises (resistance increases with temperature) so if you run the car for a while and all of a sudden it quits, measure the resistance of the coil windings to see if that provides a clue. Apart from that, the ENTIRE primary side ignition circuit has to be checked, using voltage drop testing (and testing of the hall effect sensor in the distributor), to rule the primary side in or out. If you want the required diagnostic steps performed by a certified Mechanic, dispatched by YourMechanic right to your location, please request a stalling diagnostic and the responding certified mechanic will get this taken care of for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.
I got a new battery new alternator put in but my battery just gets drained I keep having to buy new batterys
ANSWER : This may be a sign of a failing voltage regulator or potentially a bad grounding problem causing a draw on the system. The voltage regulator is a unit that regulates the charging of the battery by the alternator. Often times this will result in the alternator allowing too much power to be delivered to the battery resulting in damaging wires and prematurely sometimes destroying the battery. In other cases it may result in the alternator not supplying enough power to the battery, resulting in undercharging the battery or not charging it at all. In either case, I would recommend having an expert from YourMechanic come to your location to diagnose your vehicle’s charging system.
We have a new battery, new alternator, new coil pk, new master fuse and the car still won’t hold power.
ANSWER : Hi there. The only thing that I could think possible is causing your problem is that something may not have been correctly installed while your son was completing this maintenance. However, if your engine was difficult to start before this service, it’s possible there are different components that are damaged that simply didn’t resolve the issue. The only way of knowing what is going on with your Trailblazer would be to have one of our mobile mechanics in your area come to your location and complete a car is hard to start inspection.
My car cranks but will not start. I try to do fix the car myself. I put new battery, new alternator, and new ignition coils.
ANSWER : Hi there. Check the spark plugs and see if they are worn or burned. If the plugs are good and they have a good spark, then the engine compression could be low causing a no start situation. If the spark plugs are not emitting a spark, then the crankshaft position sensor could have failed or disconnected. Check the crankshaft position sensor wiring harness and make sure that its plugged in. Check the sensor and make sure that its not broken or damaged. If you need further assistance with your engine not starting, then seek out a professional, such as one from Your Mechanic, to help you.
Ok so i just got a use but like new alternator on my 2011 chevy cruze and a brand new battery
ANSWER : The voltage output of the alternator should be tested at the battery terminals while the engine is running. You should read output of 13.8 volts on up to maybe 14.4 volts but the value (and range, which is dependent on engine RPM) will depend on your Factory Service Manual Specification which the Mechanic will have on hand. You also have to look at the output while running various circuits. It could be that there is a short in one of those circuits which causes battery voltage to drop below the threshold at which the warning light will set. My initial suspicion would be the alternator is simply out of spec. What I would recommend is having a certified professional from YourMechanic perform an inspection of your battery and charging system which will identify the root cause of this issue you are having. Once the cause is understood, he or she will explain the repair strategy and cost. Please let us know how we can assist you further or if you have additional questions.
Intermittent stuck starter
ANSWER : Hi there. Anytime you see a prong that is not right or is pushed down, then there could be a short or cross within the relay. I recommend replacing the relay that has the prong pushed down and check to see if the starter stops engaging with the key on and starting the starter up with using a bypass starter switch to the relay directly. This bypasses the ignition switch. So if the starter does not stay on with the bypass, but the starter stays on with the original ignition switch, then I recommend replacing the ignition switch. If you need further assistance troubleshooting your starter situation, then seek out a technician, such as one from YourMechanic, to assist with the starting issue and follow through with repairs.
Won’t start after putting in new alternator, battery, starter and fuses.
ANSWER : Hi there. Check the battery cables and make sure that they are hooked up properly. Look to see if there is an issue with a loose ground on the fuse box. When smoke comes from the battery cables, that usually means that the battery cables are loose or something is overloading in the starting circuit when trying to start the vehicle. If you need further assistance with your no start condition, then seek out a professional, such as one from Your Mechanic, to help you.
