Coil and plug replacment

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10-21-2014, 06:12 PM

Trex1980

Junior Member

Thread Starter

Join Date: Oct 2014

Posts: 1

5.4 superduty won't start after plug and coil change

Hello,
Recently had a coil go bad # 7
Cylinder ran a couple days like that then replaced all coils and plugs.... When done the truck would not start it had a total of 16 codes unhooked battery to let the computer reset, that brought the number of codes down to 8 all throttle codes. Came up with replacing the tps did that still no start. Please help any ideas?
Thanks

Last edited by Trex1980; 10-21-2014 at 09:22 PM.

10-27-2014, 06:03 PM

petehack

Junior Member

Join Date: May 2013

Location: rutland il, in the country.

Posts: 16

check fuses for 12 volts on both ends of fuses. A bad fuse may of caused codes and no start. Do you have spark? Plug all wires back in on coil? I forgot one recently and it did not want to start.