Truck not turning over

[Taz7083]

I have been driving my F-350 with no issues for the past week. I drove it to work this morning (~20 degrees F) and it cranked up just fine. I went out to install my new Edge CTS and it wouldn't crank. The FICM is reading 49v, and the battery is at 13v. When I turn the key nothing happens. The lights will turn on and the glow plug light turns off like normal. I am not reading any codes either. Anybody have any ideas?

[dannyboy950]

Did this occur before or after installing the edge. Are you saying it wont fire up and run or it will not turn over the motor.

[Taz7083]

After the Edge.. I don't know if that will cause the truck not to start. Just had a road side service come to try to jump it and it's a no go. Don't really know where to go from here.

[dannyboy950]

Did you make any splices or mess with the wireing under the dash where you may have knocked a plug or wire loose? There are a couple of fuses and a starter relay involved in that circuit besiedes the pancake fender relay and the bendix relay.

[Taz7083]

no the CTS plugs right in. I'm thinking that it's an electrical problem.. maybe new battery?

[dannyboy950]

Possible if you get below 8 volts the FICM;PCM quit working and the starter will not engage. Test for voltage and load test for amperage Check for excessive draw down while trying to crank should not drop below 11 vlts on good batteries.

[Taz7083]

The volts have dropped to 11v. It's weird that the truck isn't trying to turn over at all. I mean nothing.. not even clicking.. The radio and heater turn off, then turn back on.

[dannyboy950]

There is a possibility that the starter bendix drive is stuck in the flywheel.
A starter has to have that little bit of rotation before it engages the flywheel to overcome the static inertia of the engine otherwise it is not strong enough to roll the engine over.

Try rotating the engine by hand for a full revoloution in both directions and see if it will unhang. This may or may not be the problem but something to check.