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2004 - 2008 Ford F150 General discussion on the 2004 - 2008 Ford F150 truck.

Firewall ground strap

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Old Jan 12, 2025 | 12:09 PM
  #11  
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Originally Posted by Emad Abdalla
I cleand the battery ground wire and other ground wires just to make sure. The truck have a lot of rust underneath as I live in Buffalo NY. When I try to start it all it does is the starter motor spinning without engaging, the serpentine belt doesn't move at all.
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Old Jan 12, 2025 | 01:16 PM
  #12  
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Your in Buffalo NY = Rust. Did you check the ground wires by the Central Junction Box (CJB) with is also called the fuse box. They are behind the plastic kick panel by your passenger's feet. Rust generally attacks this area.
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Old Jan 12, 2025 | 04:41 PM
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Starter spins, but starter gear does not engage teeth in flywheel. So either the starter bendix gear is not going forward to engage, meaning pull off the starter and fix, or the gear teeth on the fly wheel in the spot the engine stopped lined up with the starter gear are gone or worn down. If you can get a wrench onto the front of the crank shaft and turn the engine to a different position that would eliminate the missing gear teeth posibility until it stopped in the bad spot again.
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Old Jan 12, 2025 | 09:46 PM
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Originally Posted by Jimboy
Your in Buffalo NY = Rust. Did you check the ground wires by the Central Junction Box (CJB) with is also called the fuse box. They are behind the plastic kick panel by your passenger's feet. Rust generally attacks this area.
the starter is new and the flywheel looks ok and the ground wire by the junction box is good I really don't know what else I can check. I'm not sure if the new starter is maybe faulty I have no clue.
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Old Jan 13, 2025 | 06:43 AM
  #15  
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The original question was in regards to ground strap and a no start condition, assumed to be "crank, no start".
The "starter motor spins" condition is a different bird.
Post #13 is valid.
We need a little background on the situation. What engine? What prompted the starter motor change? Did the old starter motor spin and not engage?
You need to check and make sure the starter motor is installed correctly. Take a look, is the flange of the starter motor properly engaged into the trans. Bolts tight? Give us the full story.
If everything is installed correctly and you still have this "spin but not engage" situation I would say it likely you have a starter motor that is defective in that the bendix gear is not engaging OR broken/damaged flex plate/flywheel.
Pull the starter motor and have it tested paying particular attention to the bendix. Inspect the flex plate for damage (it may be broken)
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Old Jan 13, 2025 | 11:17 AM
  #16  
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Originally Posted by Jimboy
The original question was in regards to ground strap and a no start condition, assumed to be "crank, no start".
The "starter motor spins" condition is a different bird.
Post #13 is valid.
We need a little background on the situation. What engine? What prompted the starter motor change? Did the old starter motor spin and not engage?
You need to check and make sure the starter motor is installed correctly. Take a look, is the flange of the starter motor properly engaged into the trans. Bolts tight? Give us the full story.
If everything is installed correctly and you still have this "spin but not engage" situation I would say it likely you have a starter motor that is defective in that the bendix gear is not engaging OR broken/damaged flex plate/flywheel.
Pull the starter motor and have it tested paying particular attention to the bendix. Inspect the flex plate for damage (it may be broken)
My truck is 2009 ford f150 lariat 5.4 and 4 wheel drive. I changed the starter myself few months ago due to a no crank no start with a one click after I changed it it fired right up and no problem to start the truck. Then few months later when I try to start my truck it does a long crank with a loud choking sound and it starts and sometimes with loud choking sound and no start and it would take few tries to start it and that lasted for about 3 days then I couldn't start the truck at all since December 20th. So I thought it's my throttle body and mass air flow sensor so I replaced it with a new one and still doesn't start with just the sound of the starter spinning so I thought maybe my alternator and my serpentine belt is the reason why so I replaced them both with a new ones still the same. So I thought it might be my crankshaft position sensor is the problem since I don't get any rpm signal when I try to start the truck so I replaced it with a new one and still the same the truck doesn't start and only the starter motor spins and no rpm signal, and last night i did relocate the fuel pump fuse number 27 because its a common issue just for the hell of it with no luck still. At this point I don't know what could be the problem I think it might be electrical issue but I'm clueless where to look I watched a tons of YouTube videos takes you to so many directions but it didn't help.
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Old Jan 13, 2025 | 04:16 PM
  #17  
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I am still having a hard time understanding your situation. It sounds like the starter motor was changed a few months ago and everything was ok with the new starter motor, the truck started and ran fine.
1) Confirm that when you turn the key to the start position the engine cranks, meaning that the engine itself is rotating as evidence by crankshaft/alternator belt turns as the engine cranks over using the starter motor.
2) If #1 above is true the starter motor is ok and the bendix is working. My previous understanding was that the starter motor was spinning "free" with no engine movement, this apparently is not the case. Comments about missing teeth and flex plate issues do not apply.
3) Confirm that present situation is that the engine cranks (engine rotates) but that the truck does not start (crank, no start).
Have you ever heard of a FPDM (Fuel Pump Driver Module)? Get some "Starting Fluid" and while someone is cranking the engine over spray a little into the throttle body intake. Did the engine try to or did actually start? If so you have a fuel issue and it may be the FPDM.
Rent, buy or borrow a cheap code reader (assuming you can't drive it to an auto parts store and have them read your codes) and read the codes. Write them down and provide those codes with your next posting.
Once I, and hopefully others, fully understand your problem then accurate recommendations can be provided.
We need the codes. Codes mean Diagnostic Trouble Codes (DTCs) that your trucks computer will provide to your code reading device.
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Old Mar 18, 2026 | 05:45 AM
  #18  
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Emad Abdalla,

Progress Report?
Many, many of the posts in this forum (and others) are open ended. Problem stated, solutions suggested but no closure. Please post feedback that allows future readers to understand and consider your experience with the issue.

jimboy
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