Cranks by it self....Help

[RIVERA RACING]

I have a 04 Expedition when I start the truck I hear the starter spinning and when I turn off the truck it stays cranking..........Help please....

 

[stamp11127]

The usual culprit is the starter solenoid mounted on the firewall. The other possibility would be an ignition switch that is failing internally - long shot though.

Should it do it again have something handy to hit the solenoid body. The shock usually will release the contacts inside.

Don't let this go or you will be replacing the starter soon.

 

[RIVERA RACING]

Where on the firewall.....................

 

[stamp11127]

Firewall passenger side. There is a pic on the site, I'll link to it when I find it.

Found one on Google:

https://www.google.com/search?q=for...SblDAsQ_AUIBygC&dpr=1.5#imgrc=ZxdSGrGi3ZFYPM:

 

[RIVERA RACING]

On the passenger side the ECU is there.

 

[stamp11127]

The component location views didn't show the location. The wiring diagram indicates it may be in the central junction box

 

[RIVERA RACING]

So is in the main fuse box then...........

 

[stamp11127]

Best thing to do is look at your user manual for the fuse box layout so that you will know which relay it is. If you don't have the manual it is available online.

I wish I could tell you but mine is 1st gen.

 

[RIVERA RACING]

Is maybe a relay that soldered into the fuse box.

 

[stamp11127]

Can't tell you if it is or not but it is relay 01 per the owner's manual.

If you have basic electrical/electronic tools you can replace or upgrade the relay/fuse box to take externally mounted replaceable relays.