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Got a 98 Expedition that wont start. I've changed

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  • Cars & Trucks Master
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Is power getting to the starter by way of the neutral safety switch ?

Posted on Jul 30, 2013

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Posted on Jan 02, 2017

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SOURCE: Car will not start, but the battery and starter are

hi, on most newer than 2000 vehicles, there is a computer cut out to the starter solenoid performed by the security system or theft deterrent system. also the pcm(powertrain control module) or engine computer does have an ignition sense circuit designed to control various functions. perhaps the ignition switch could be causing the problem, bad connection could be the case there. if the theft deterrent system is causing it, the security lamp may or may not illuminate. it maybe stored in the pcm memeory diagnostic codes only. you may want to take to repair shop. .... one more thing to check, if your key has a diode in it(looks like a black chip with a wire through it) check it closely to make sure it is not dirty or wet, or any other contamination of it. the diode is of specific ohms value and if any of the above mentioned things occur to the key, it will lock out the security system. good luck.

Posted on Jun 07, 2010

  • 1374 Answers

SOURCE: 2002 GMC Envoy, i put the key in ignition and

Ignition switch and neutral safety switch. Next time it happens wiggle thekeys in the ignition switch and try to restart.If it starts its probably the ignition switch. Then locate neutral safety switch on brake pedal and put meter on B+ wire from switch to starter relay and see if you get B+ on the would -be- crank. Next locate B+ wire from starter relay to starter hook a meter to it and see if you get B+ on the would -be crank.
Where ever B+ is missing is your problem.

Posted on Apr 14, 2010

  • 5252 Answers

SOURCE: 1990 HONDA ACCORD WON'T TURN OVER TO START BUT IT WILL ROLL START. I HAVE CHANGED THE ALTERNATOR AND TESTED THE IGNITION SWITCH STARTER RELAY SEEMS FINE CLUTCH SWITCH SEEMS FINE MAIN RELAY IS FINE

About the only thing you didn't mention was the starter itself. You could have it tested. But before that, try to see if you have power on the small wire to starter solenoid on the starter, when key is held in cranking position. Pull the small wire off and check for power with a multimeter or a testlight while someone holds the key in crank. This is the signal wire from ignition switch that closes the elec. contacts inside solenoid so the starter gets full power from the battery to spin. (This wire also is in the circuit with the clutch switch and the starter relay.) If you have power on this wire in crank, it is very likely the starter is bad. If there is no power, check that circuit out. It is losing power somewhere from switch to starter solenoid. Good luck.

Posted on Jul 06, 2012

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1 Answer

98 ford expedition won't start, installed a brand new battery, lights come on but when I turn ignition to start lights shut off, and come back on after a second


Check battery voltage, should read 12.5 volts or more. Just because it its new, doesn't mean it is charged to full voltage. If battery is fully charged, and connections are good, then I would look at the starter relay or starter motor.

Dec 06, 2013 | Cars & Trucks

1 Answer

My 2002 Toyota Tundra 4.7(V8) has an intermittent start and the battery drains overnight from 12.5V to around 10.0V. I've tested for parasitic draw and every time I test my reading is ~ .025A...


I think I would attack the drain problem first. Something has to be draining the battery, it does not have to be a steady drain. It could be something serious for 30 min in the middle of the night. You may need to pull fuses one at a time to try to narrow down the circuit. it could even be a weak component in the alternator or computer. I know you said you replaced the alternator.
If it goes down overnight, it should also go down during the day. Can you leave the meter connected and check it every hour or so ? ?
Another component that could be suspect is the key switch. I know you said you checked it, but it could be a part-time problem.
When the starter or relay clicks, I would want to know how much voltage I have at the starter post, and coming out of the key switch. Then how much at each point in between. You also have a neutral safety switch in that circuit.

Jun 02, 2013 | Cars & Trucks

1 Answer

I got a 110cc foreign 4 wheeler in 2007, road it 5 times and been in storage till recently. It's only starting source is wireless remote start. It won't even click, I've charged it, new...


Modern batteries don't like to sit unused for 6 years and may not take and/or hold a charge sufficient for starting.
If you don't already have one, you can get a digital meter for <$20 at auto parts or electronic stores.
While checking across the battery terminals, try to start. If the voltage changes very little, then the starter isn't seeing it well enough to draw current; starter, solenoid or a crusty connector can be blamed.
If the voltage falls down to 70-75 percent when trying to start, then the battery is probably dead forever.
Some, but not all, can be restored by applying 2-4 times their normal charge voltage and monitoring it to see if the drawn current starts to climb.
If it does, DO NOT LEAVE THE HIGH CHARGE VOLTAGE ATTACHED UNLESS YOU STAY CLOSE TO IT.
I generally reduce the applied voltage until the current drawn drops to a few hundred milliamps and then check it every few hours to check progress.
If you can get the charge voltage down to 1.2-1.5 times the rated voltage and still have current flow, the battery may recover.

Apr 21, 2013 | Cars & Trucks

1 Answer

Battery on 98 Ford Expedition doesn't hold charge


First thing I would do is have someone qualified disconnect the alarm and stereo and start over.
Chances are you have circuits cross-connected and something is draining the battery.

Jan 14, 2013 | 1998 Ford Expedition

1 Answer

I've changed the alternater,starter, voltages


Troubleshoot first and then change parts! What was the original problem? It just won't crank over? The alternator just charges the battery the voltage regulator keeps from putting too much of a charge into the battery. Was the battery going dead? Did the vehicle start when jumping it with jumper cables? Too many unanswered questions to offer help, sorry.

Feb 26, 2012 | 2007 Ford Van E-350

1 Answer

On my 2003 ford expedition, on the first turn of the ignition the car would not start. I would have to turn the ignition at least 3 times for the car to start. I changed the starter but still the same...


I'd check your fuel pressure...how long has it been since the fuel filter was changed.
A restricted fuel filter or weak pump comes to mind since you've got the electrical checked...

Hope this helps...

Jul 30, 2011 | 2003 Ford Expedition

2 Answers

04 expedition wont start fuse box just clicks all power goes out. just replaced the battery


check the voltage on the battery ,, it should read a minimum of 12.4 volts, Ive bought batteries before that had lost some charge , if it has the right voltage,, tap on the relay you hear clicking (you'll need help , someone to try turning it over) make sure all connections are clean,, if that doesn't work, your going to have to have the starter checked

Jul 19, 2011 | 2004 Ford Expedition

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