No crank no start

Tiny
STANGLOVER27
  • MEMBER
  • 2008 FORD MUSTANG
  • 4.6L
  • V8
  • 2WD
  • MANUAL
  • 141,485 MILES
I've got the car listed above GT, 5 speed. It won't crank or turn over starters good everything works windows, radio, etcetera. Just will not start or crank. Swap the relays already nothing, swapped the diodes nothing. Tried turning the steering wheel and up and down and everything nothing even unhook the radio because I heard the radio could be my problem nothing. Bypass the neutral safety switch nothing. Alternators good, fuses are good, and relays are good. Just will not start or crank. When I turn it on the little orange wrench tire pressure check engine light and battery light are all on. When I try to turn the key to the start position the traction control light comes on and the tire pressure light flashes no theft light flashes nothing like that. But it still won't crank. The car has a chip and a tune but unfortunately, I no longer had that sct4 scanner the OBD2 is not working. Previously before this I was driving home, and the throttle stuck made it home turned it off got out unplugged throttle position sensor. I'm glad you back up and the car is not starting back up. It has been 2 months now I've lost my job and everything because of this. Please, please, please, somebody help me and inform me of something I have not tried yet. But the OBD2 is throwing codes that it can't find nothing tells me make sure the keys on. So I'm guessing it's not connecting to the ECM somebody please help. I've even tried tapping on the starter. Thanks in advance a million.
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Thursday, October 7th, 2021 AT 3:20 AM

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Tiny
STANGLOVER27
  • MEMBER
Also does the same thing when I try to jump it off or with a different battery. I've also tried using a jump wire with a paperclip and nothing. It won't do anything. Is there anything I haven't tried before I go buy an expensive computer or PCM or wiring harness? Because keep in mind I lost my job because this car wouldn't crank. Please help so I can get it running and get a job. Oh, and the tire had a blowout driver front and I have a donut on it. Could that be the cause of anything? And my fuel pump isn't kicking on at all after my cousin hit the emergency shut fuel shut off. How do I fix that as well?
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Thursday, October 7th, 2021 AT 4:30 AM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi,

When you say it isn't cranking, I assume the starter isn't working, correct? Also, the inertia switch has a reset button on it. Have you tried resetting it? See pic 1 below for the location.

Next, I attached the wiring schematic below for the starting system. I need you to first check the fuses I highlighted in the schematic. Pics 4-6 show the fuse locations. Note, in addition to checking the fuses, confirm there is power to and from them. Here is a link you may find helpful:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

If the fuses check good and have power, check the starter relay, highlighted in pic 6. If there is another relay with the same part number, switch them. If there isn't, here is a link that shows how to test a relay.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

If the relay is good, go to the starter itself. We need to check the smaller wire which should be yellow with a blue tracer in color. That is the smaller wire on the starter. It should only get 12v when the key is in the start position. Have a helper turn the key to start while you check for power.

If there is power and the heavy gauge wire straight from the battery is good and has power, chances are the starter is bad.

Afterthought: Make sure there is power to and from the clutch pedal switch.

https://www.2carpros.com/articles/how-to-check-wiring

Let me know what you find or if you have other questions.

Take care,

Joe

See pics below.

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Thursday, October 7th, 2021 AT 8:21 PM

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