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1979 C900 No start

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Old Feb 25, 2021 | 06:46 AM
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Unhappy 1979 C900 No start

After a new starter; new coil , and starter solenoid I still get no crank. I have posted pictures on how it looks now. I do have lights, and air brake "beep" but nothing happens when turning the key to start. The truck is a fire truck on which I removed the battery switch inside. If there is any one could help , thanks.
Andy




 
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Old Feb 25, 2021 | 08:41 AM
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I would take an ohm meter and check resistance from the solenoid mounting bracket to the negative battery cable or a good, clean spot on the frame...it looks suspect to me...and the bracket has to be grounded for the solenoid to work....and make sure that is the correct ford style solenoid with the S and I terminals...
 
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Old Feb 25, 2021 | 09:49 AM
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Jump the solenoid and see if it cranks. this will tell you where to look.

Be sure it's out of gear of course.
 
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Old Feb 25, 2021 | 10:49 AM
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Awesome thank you I'll let you guys know once the weekend shows up
 
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Old Feb 26, 2021 | 08:43 PM
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Bump to the top for moved thread.
 
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Old Mar 2, 2021 | 12:31 AM
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Is the cable from the solenoid to the starter grounded? Looks like it might be.
 
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Old Mar 26, 2021 | 11:36 AM
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Originally Posted by Louisville Joe
Is the cable from the solenoid to the starter grounded? Looks like it might be.
Will have to double check. I just get a click from the starter and no movement . Seems the engine is locked. So far all the pulleys are good, I'm waiting for a new Starter Solenoid . KNOCK on wood.
 
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Old Mar 26, 2021 | 11:40 AM
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Originally Posted by 440 sixpack
Jump the solenoid and see if it cranks. this will tell you where to look.

Be sure it's out of gear of course.
Going to to check my grounds and buy a new solenoid, I just get a click , I got power to ignition coil, also have a trigger tool, but no luck. I tried to put power directly to the starter but it just clicks. BTW its brand new coil;starter and starter/ground wires. MMMM
 
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Old Mar 26, 2021 | 12:13 PM
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Pull the spark plugs, put a socket and breaker bar on the crank bolt, and see if the engine will turn over. If it turns over, make a complete revolution and check for any fluids coming out of any cylinders. If so, that would indicate hydraulic lock is your current problem.

If the engine will bar over, then try the starter.
 
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Old Jun 28, 2021 | 06:52 AM
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So the engine turns now, ATF/Acetone trick. New starter ,plugs & wires as well as a coil but no spark. Next step is ignition module. Any thoughts. Thanks again , Andy
 
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Old Jun 28, 2021 | 04:14 PM
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I pull ignition control module and got the part numbers off to the locate NAPA, also going for a new pickup coil too.


 
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Old Jun 28, 2021 | 04:18 PM
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More pictures.
 
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Old Jul 7, 2021 | 09:58 AM
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Any ideas? After new module and cap/wires, no spark, maybe a bad resistor wire?
 
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Old Jul 7, 2021 | 05:05 PM
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Are you testing components and connections with a meter?
 
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Old Dec 8, 2021 | 09:50 AM
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Question

Hey everybody, So I have no spark, I was told there was ballast resistor that possibly overheated. I posted some photos. Any ideas what is happened with all this old wiring. By the wire it was a old fire truck. Thank again

ballast

link
 
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