Bad Battery in 2005 Expedition

[TexEx]

Clicking is a bad battery or dirty terminal

Went & bought a new battery, top of the line gold series...also the fuel pump driver module, terminal now red hot, humming noise even louder...im completely baffled & frazzled

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[Don Hall]

Went & bought a new battery,

Did you ask them to test the old battery before you bought new?

 

[TexEx]

Ye, that actually did a load test & determined it was bad from the start...

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[Adieu]

Did you clean the terminals with sandpaper?

 

[1970Maverick]

Ok now with a fully charged battery this AM no lights, flashing security latern on top of dash, positive batt terminal getting extremely hot, clicking from around throttle body..Houston I've got a problem...this os new to me, 3rd exp in 20 yrs..

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If your terminal is getting hot there is some resistance between the battery post and the terminal on the post(loose bolt, oxidation, etc) OR between the terminal and the wire (bad crimp, oxidation, etc. Either of these could also prevent the alternator from fully charging the battery and eventually cause battery to fail.
Have you taken your Expy to a PEP Boys, Autozone or Discount Auto to have them test it?

 

[TexEx]

Yes sir, there was corrosion on the extension plate/tab from the positive post to the fuse cluster harness, not alot but enough to seperate the connection. In addition, there was a cluster of oxidation on the starter connection which was evidently from a bad battery that I replaced...THANKS for you info..lucky to have figured this out Sunday evening.

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[Wegner44]

to eliminate corrosion, spray a coating of lithium grease onto the battery terminals and connections. You will never have corrosion issues ever again.