Question about 2004 Ford F150

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No start, no crank

Replaced battery, starter, neutral safety switch on the side of the tranny, new ignition module turn key and starter wont engage, if i jump from the hot side of the battery to the wire leading to the starter it will crank but not start (key is in correct position). checked all fuses relays and wiring for correct voltage and continuity.

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Do you hear a click if you do its probably your starter cylinoyed if it works when you jump the wire you are bypassing it hope this helps pat

Posted on Nov 22, 2013

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If the starter won't engage, you can't crank the engine. You would only hear the starter operating freely. The replacement starter may have to be shimmed to fully engage the ring gear. Also, did you verify that the ring gear is OK?

Posted on Nov 22, 2013

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2002 chevy trailblazer and it will not crank or start and the key has gotten stuck in the ignition. I also got a jumpstart and it still didn't start. What is wrong, Please?


Could be a number of thing's , can you do automotive electrical testing ? Do you know if starting is PCM / ECM controlled or BCM controlled ? Do you know what these are ? BCM - body control module , PCM/ECM - engine computer !
Moving the ignition switch to the START position sends a 12-volt signal to the engine control module (ECM)/powertrain control module (PCM) Crank Request circuit. The ECM/PCM verifies that the transmission is in the PARK or NEUTRAL position. With the transmission in Park, voltage flows through the Park/Neutral position switch and feeds the starter relay coil. The PCM then grounds the control circuit of the starter relay. When the starter relay is energized it allows battery positive voltage to the starter solenoid S terminal. On some vehicles the starter will continue to crank the engine with the key released until it starts or the crank command has timed out to prevent excessive heat build up in the starter circuitry or the ECM/PCM receives an engine run flag.
Circuit Description (BCM Controlled)
Moving the ignition to the START position signals the body control module (BCM) that engine crank has been requested. The BCM verifies that theft is not active and sends a serial data message to the powertrain control module (PCM) requesting engine start. The BCM also energizes the RUN/CRANK RELAY. When the RUN/CRANK RELAY switch side closes, and the vehicle is in Park or Neutral or with the clutch is fully depressed, if equipped, supplies voltage to the starter relay coil. The PCM verifies the transmission is in Park or Neutral and the clutch is fully depressed, if equipped. The PCM will then ground the control circuit of the starter relay, closing the switch supplying voltage to the starter solenoid. On some vehicles the starter will continue to crank the engine with the key released until it starts of the crank command has timed out to prevent excessive heat build up in the starter circuitry or the PCM receives an engine run flag.
Do you know what a park neutral safety switch is ? What do you mean key stuck in ignition ? Can't turn the key to off position , or you can an the key will not come out ?
Your best bet , take it to a qualified repair shop .

Apr 04, 2017 | 2002 Chevrolet TrailBlazer

1 Answer

Where is the safety switch for a 2006 chevy malibu


Safety switch ? For what ? Park neutral safety switch ,is this what you mean ? Your vehicle not starting ? There is a lot more involved then just that switch.
Circuit Description
For ignition switch power modes refer to Body Control System Description and Operation. Once the ignition is placed in the Run/Crank position, the control circuit of the Run/Crank relay is grounded by the body control module (BCM). With the Run/Crank relay switch closed, battery positive voltage flows through it and on to the park/neutral position (PNP) switch. With the PNP switch in either the Park or Neutral position, battery positive voltage will flow to the starter relay coil supply voltage input terminal of the powertrain control module and the coil side of the starter relay. Placing the ignition in the START position sends a message to the engine control module (ECM)/powertrain control module (PCM) requesting engine start. If the ECM/PCM has determined that the transmission is in Park or Neutral and theft is not active, it will ground the control circuit of the starter relay. Battery positive voltage will then flow through the switch side of the starter relay to the S terminal of the starter solenoid, cranking the engine. For remote vehicle start (RVS) information, refer to Keyless Entry System Description and Operation.

May 25, 2016 | Cars & Trucks

1 Answer

Why wont my car start gauges and lights come on but wont crank no power going to soelinoid wire


If the security system has been reset ( no light on/flashing ) you may have a neutral safety switch problem, Will the vehicle crank over in neutral? In most cases, the neutral switch grounds the starter relay and allows it to operate. Does the starter relay connector have 2 powers? One constant and one with key on/cranking? If these power supplies are there, suspect the ground side of the relay to be the problem and possible neutral safety switch

Jan 20, 2016 | 2000 Ford Taurus

1 Answer

I have grand am gt 2002 most time it starts.replace starter and new battrie. when turn the keyno power to moter I have to turn the keys on and off couple time and then it starts up any ideas on whats


Could be issue with ignition switch or security system? If the starter motor won't crank, check voltage circuits at the starter. Usually two voltage circuits, one is battery voltage, hot all the time. The other voltage comes from crank position of ignition switch. That circuit could be routed through the neutral switch or clutch switch, depending on your tranny.

Any testing at starter make sure tranny is in park or neutral and the parking brake is set.

Nov 22, 2014 | 2002 Pontiac Grand Am

1 Answer

2000 chev wont start at key


I think the purple wire (or maybe the yellow) from the neutral safety switch goes to the coil side of the starter relay, turning it on so power is sent from there to the starter solenoid. You could check for this signal to the relay with a test light. The key must be held in start while you probe the other two terminals for the relay. If the signal is there, either a bad relay or the coil side of relay is not grounded properly. It is possible that the coil side ground is the neutral safety switch-grounding the relay's coil side only in park or neutral-in which case the nagging light on shifter (between off and run, it only works?) may be telling you the safety switch is the problem.

You may need to look at a wiring diagram, Greg. But the starter relay is the last component in the start circuit before the starter solenoid. From battery to ignition switch to "crank" fuse to neutral safety switch to starter relay to starter solenoid to starter-and back to battery through ground. That is the start circuit. Just that the wiring tying them all together makes it complicated.

Apr 10, 2014 | 2000 Chevrolet Silverado 2500

1 Answer

How to fixed wont start engine..


test the following and fix it. GOD BLESS you.fe35589e-c7d2-4fa3-a813-99841956a6cb.gif
If nothing happens when you turn the ignition key to the "Start" position, it means that the starter motor doesn't turn over the engine. Most commonly this could be caused by a dead battery;
If the battery checks out OK, but the starter still won't crank, there could be a number of possible reasons. Here are some of them:

The ignition switch could be bad - it's a common problem. An ignition switch is an electrical switch installed at the back of the ignition lock mechanism. If jiggling the key in the ignition helps start the car, the ignition switch should be checked first.
The starter solenoid control wire could have a bad connection.
The starter motor itself or a starter solenoid could be bad.
A neutral safety switch is bad. If a car doesn't start with the transmission in Park, but starts in Neutral, it could be caused by a problem with a neutral safety switch.
.
A problem with vehicle's security system or some other electronic control module (e.g., ECM, BCM) may also prevent the starter from operating.

Jul 27, 2013 | 2004 Chevrolet Aveo

1 Answer

Will not start / computer key?


test the following and fix it. God bless you

If nothing happens when you turn the ignition key to the "Start" position, it means that the starter motor doesn't turn over the engine. Most commonly this could be caused by a dead battery;
If the battery checks out OK, but the starter still won't crank, there could be a number of possible reasons. Here are some of them:

The ignition switch could be bad - it's a common problem. An ignition switch is an electrical switch installed at the back of the ignition lock mechanism. If jiggling the key in the ignition helps start the car, the ignition switch should be checked first.
The starter solenoid control wire could have a bad connection.
The starter motor itself or a starter solenoid could be bad.
A neutral safety switch is bad. If a car doesn't start with the transmission in Park, but starts in Neutral, it could be caused by a problem with a neutral safety switch.

A problem with vehicle's security system or some other electronic control module (e.g., ECM, BCM) may also prevent the starter from operating.
see the diagram attached and proceed.1e981703-9c1f-4bcc-b4b9-95d04805c4c5.gif

Jul 27, 2013 | 2002 Buick Park Avenue

3 Answers

My 92 lincoln town car will not start i have replaced the starter, the neutral safety switch and the battery but when i turn key nothing happens but can jump starter and will crank


Yes there is a starter relay in the wiring diagram.
The yellow and lite blue wire goes from the starter solenoid to the relay. There is a yellow wire from the relay to a 30amp fuse. The key switch powers thru the neutral safety switch and then powers the relay on.

Jan 29, 2013 | Lincoln Town Car Cars & Trucks

2 Answers

Can the pcm cause the starter not to turn in my 2000 dodge neon?


Is it getting fuel? Check the pressure regulator or the fuel pump. Even if you have the plug wires on wrong it should do something.

Aug 30, 2012 | 2000 Dodge Neon

2 Answers

Truck randomly won't start. No clicking, no nothing. Has a new battery, starter relay, ignition switch, etc. Someone told me to replace the clutch switch/neutral safety switch. I bought a neutral safety...


when it wont start, turn your headlights on, see if they work if they dont, find out why. When it wont start, take a wire from the positive battery terminal and touch it to the small post on the starter solenoid, it should crank. If it now cranks, theres a problem between the ign switch and the starter solenoid.

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