Has anyone had the same issue?

Went to start the 02 F150 with 5.4 triton this morning and had no power.
The power (dashlights/interior etc.) started flashing on and off weakly.

Had a clicking noise coming from the fuse compartment in cab.

Battery is fine (charged and no loose posts).

Could it have something to do with the relays in the fuse box?

Thanks

 

Has it rained or snowed recently?

This sounds like a problem I had a year ago and wound up being a major headache.

The seal around the windshield was crap straight out of the factory and let water run down the pillar into the fuse box which fried my GEM module. $600 repair which then, get this, happened again 4 months later.

 

No
No rain or snow.

Appreciate the info though.

 

Dead battery

 

That's what it sounds like to me. Mine does the exact same thing when the batteries dead lol.

The cables and small wire on the starter is what usually corrodes and causes problems, but yea, -sounds like the battery died.

Here's where they corrode up -



Also, check that loop above ^^^^^ - Make sure it's not holding water.

 

Battery is fine (charged and no loose posts).

The battery is about 6 months old. It is not the battery I checked it.


Other Ideas?

 

Check the fuse, I forget which one it is ?? A few years ago my starter soleniod mounted on the firewall next to the battery started to short out and pop the fuse. R/R soleniod and fuse and good to go.

Turn the key on and take a screwdriver to the soleniod posts and see if it turns over?? if not have the battery load tested.

 

I already gave you some, you now need to apply yourself.

 

had the same thing happen to my 97 4.6...ended up being the battery. take a multimeter and see exactly how many volts you have. batterys can do some strange things sometimes. those starter wires are notorious for rusting thru and falling off..happened to me too.

 

Thank you all. It turned out to be the battery. It tested fine at home but didnt do well when subjected to "load".

Thanks again.

 

Glad you got it figured out, good job

 

Just because the battery is charged and reads 12 volts or better does not mean it will pass a load test.

 

That is exactly what mine did, it was the battery.