Question about Ford F-250

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I want to test my Starter unit for a full size Ford pickup: I must learn where the B circuit and the other circuits are located on the out side of the Starting unit, so I can test the Starter unit with an Ohm meter/

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Are you checking to see if the starter is bad? If so, testing this way is a power and continuity test, and testing a starter in this way will not neccessarily tell you whether it is godd or bad. If the brushes or the armature is worn out, the power and continuity will test good, but the starter still will not work or work part time. The best way to test a starter is to remove it and have it tested at any auto parts store.

Posted on Aug 01, 2008

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Check this link it will help you to check and replace the starter http://www.autozone.com/az/cds/en_us/0900823d/80/04/a0/7f/0900823d8004a07f/repairInfoPages.htm

Hope that helps..........

Posted on Aug 01, 2008

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What is the model year of your F-250?

Posted on Aug 01, 2008

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Posted on Jan 02, 2017

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2 Answers

Starter will not engage on 2003 Ford escortzx2 starter tested and fine what do u think it is


Make sure battery has a full charge and connections all good. How did you test it?
Did you check voltage and ground for the starter motor? Two voltage circuits at the starter motor, one comes from the battery, hot all the time. The other goes hot with key in the crank position and is wired through the clutch or neutral switch, depending on your tranny. Ground is also important. Any testing at starter motor, make sure tranny is in park or neutral and parking brake is set.
starter 1-sd44d5iihse5k0tgntjs1xio-1-0.jpg

starter 2-sd44d5iihse5k0tgntjs1xio-1-2.jpg

May 09, 2017 | Ford Cars & Trucks

1 Answer

I got a 2001 chevy/silverodo c1500 new battery month old it was all fine i got in to start it an it all but it won't turn over it won't make a noise nothing from starter the fuses r all good


Do you have a volt meter ? How to voltage drop test starter motor circuit Here is a site for wiring diagram http://www.bbbind.com/free_tsb.html Enter your vehicle info.Year, make , model , an engine size. Then under system click on engine , then under sub system click on charging system (starter system is also under that ) Then click the search button , then click on the blue link . You can issolate the starter circuit at the starter relay in the under hood fuse box , to see which side of the circuit is bad , control or the load (starter) side . If you pull the relay out of the fuse/relay box an look on the bottom you will see four numbers 86, 85 & 30 ,87 .If you were to take a piece of 12 gage wire an jump where 30 & 87 plug into the fuse / relay box . And if the starter spins the engine over you just eliminated the starter , battery cables , ground circuit as not being the problem . This would indicate that something on the control side was bad , Park neutral safety switch , ignition switch . But before replacing parts some electrical testing should be done . Hope this helps an if you have an questions let us know .

Apr 15, 2017 | Cars & Trucks

1 Answer

My 1999 mercury grand marquis does not turn over. I replaced the starter and the pulleys still do not turn at all. What can it be ? Any suggestions ?


Do you know how to test automotive electrical circuit's ? Starter circuit voltage testing ? Do you know what all is involved in the starter circuit ? Do you know what a wiring diagram is ? How to read a wiring diagram ? Replacing parts without testing is not the way to fix automotive electrical problems , And if you don't know how to test the electrical you learn how , or take it to a qualified repair shop . How to voltage drop test starter motor circuit
you can view a wiring diagram at http://www.bbbind.com/free_tsb.html

Mar 21, 2017 | Mercury Cars & Trucks

1 Answer

Car wont start have replaced starter motor and relay and igniyion switch still wont start


What is year--make--model?
Make sure battery has a full charge and battery connections are all good. If your saying starter motor won't crank, check voltage and ground at the starter motor. Usually two voltage circuits at the starter, one comes from the battery, hot all the time. The other circuit goes hot with key in the crank position and in your case, I suppose wired through the starter relay. The relay has two circuits, the load side and control side of relay. The control side of relay needs voltage and ground to energize the relay. The load side of relay, in a diagram shows a line with arrowhead, when relay is energized, that arrowhead line moves to other terminal and that circuit carries voltage to starter. The voltage for load side of relay is usually hot all the time. I can't rule out neutral or clutch switch. The starter motor usually grounds through the engine block. If all voltage and ground circuit for the starter are good, I'd have to make sure the engine isn't seized.
Any testing at the starter, make sure tranny is in park or neutral and functional parking brake is set.

Mar 06, 2016 | Cars & Trucks

1 Answer

Why will my gas gage stay at full on my 2001 excursion


The gauge is faulty or the sending unit in the fuel tank is bad ! There is away to test it, find a wiring diagram an locate the two wires at the fuel pump sending unit connector . Go to radio shack or some other electronics store an buy some resistors of differing resistance , I'm not sure of resistor sizes , I will look it up on my ford service info system. If you jump the right resisters into the fuel sending unit circuit you can make the gauge show 1/4 - 1/2 - 3/4 an full. If it move to those positions with the right size resistors it's not the gauge but the sending unit in the gas tank ! Diagnosis of Stuck Fuel Gauge Is it Gauge or Sending Unit

May 06, 2015 | 2001 Ford Excursion

1 Answer

2000 Ford Ranger wont start or turn over.


What is litre size of engine, automatic tranny or manual? Check the wiring circuits at the starter for voltage,use a test light, One circuit is hot all the time, the other circuit goes hot when starter relay is energized. Any testing at the starter make sure tranny is in park or neutral and the parking brake is set. The clicking noise may be the starter relay.

Nov 20, 2014 | Ford Cars & Trucks

2 Answers

No power pass starter .no lights in or out every thing dead


No vehicle either-- apparently

What was tested & how & the results ?

You want us to guess at what-- I ask?

You always start at the battery & test your way to,
hopefully-- finding something amiss

I would suggest you get a wiring diagram, as you will need
to learn your vehicles circuits,at least those you intend to test,
so you can pick a convenient test points

The push & poke,wish & hope strategy, won't get you far

That being-- checking all fusible links & fuses & the visual
checks

You need to talk in the terms Voltage,Amperage,Voltage
Drops,Power or Ground Side of a circuit,so everyone
understands what your doing,testing & how.

Oct 29, 2014 | Cars & Trucks

1 Answer

ITurn key, clicking sound, no turn over


If it won't crank over, it's a problem in the starting circuit, not the ignition circuit. Check your battery and starter for clean, tight connections. Listen for that click to see if it comes from the starter solenoid on the starter-maybe have someone try to start it while you watch and listen under the hood. If the click is from the solenoid (and not from the starter relay), then the starter is not getting full battery power to crank (bad connection), or the starter needs to come off and be tested.
If the click is from the starter relay, you could pull off the little purple wire to the starter solenoid and see if it has 12 volts when the key is in start position. If you have power there in cranking position on the switch, the solenoid is bad or the starter may be the problem-again, it will have to come off for testing. If you have no power at the solenoid in cranking position, the circuit from the ignition switch to the solenoid is not working. The start relay and the neutral safety switch (or clutch switch if manual transmission) are in the starting circuit from ignition switch to the starter solenoid. Good luck.

Apr 01, 2012 | GMC Cars & Trucks

1 Answer

1994 ford ranger xlt 2.3l. having trouble with the fuel delivery system. pump doesnt prime or cut on at all ( itll jus quit when im driving) but mostly when i slow down to a complete stop my truck will...


Rather then just replacing parts testing the fuel pump electrical circuit is the proper way to diagnose . Do you know how to use a DVOM - digital volt ohm meter , how to use a wiring diagram to pin point testing points in a electrical circuit ? How to use voltage drop testing in a circuit to find which part of the circuit has the problem B+ or ground side . Yes it can be very agrivating if you don't know what your doing . Testing for power at the relay an testing for control . The PCM - engine computer controls the fuel pump relay !
http://www.bbbind.com/free_tsb.html Here is a web site for free wiring diagrams ! Enter your vehicle info. year , make , model an engine size ! Under system click on engine , under subsystem click on fuel controls . Click the search button an three links will pop up . Click the first one .Buy yourself a volt meter an watch this video an learn .
Mastering Voltage Drop Testing with Pete Meier and Jerry Truglia
Learn the two sides of the circuit .
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1 Answer

Want to test Startup unit: Ford pickup 250 1993 /460 cubic measure/7.2 L


Check the starter solenoid on the inner fender, should be on the drivers side fenderwell. Typically this is the problem. its a cheap part.

Aug 01, 2008 | 1993 Ford F250

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