Help Please!!!!

[Jonnie_Knuckles]

hey guys - hopefully one of you guys will have an answer for me ----

my Truck: 2002 F250 XLT Superduty 7.3L 2wd

Saturday - went to start my truck to go to work and the truck had absolutely no power despite working perfectly fine the night before.... plugged in a charger and let charge all day saturday and sunday..... sunday night i go to give it a try and still no power despite being charged for a day and a half....

Monday - Replaced the batteries on a whim and got the truck to start - ran for 2 hours and went to get food, turned it off, ate inside, and came out 15 minutes later only to find the same problem i encountered saturday morning.....???!!???, i checked a connections and all are good but it seems like i am experiencing an extreme power draw/drain....cant figure out how.....


heres the weird part - hooked up the batteries to jump start, and 10 minutes of charging and my truck actually turns off my buddy's cavalier and my other buddy's 03 F250 while they are trying to charge my truck?!?!?!

what the hell is going on here??? on top of that my wait to start light is pulsating extremely fast as well as making fast-paced clicking noises inside the cab.... checked the fuses, and nothings blown...??? any little bit of charge i get the batteries to hold dissappears the second i disconnect the jumpers and i go back to stage 1 of no power.....


Any ideas??

[bigwhite7.3stroker]

WELCOME TO ORG ! ! and a bump for info.

[pinkfloyd]

I'd get the alternator tested then go from there. If that's not the problem then there is something draining the batteries when it's not running.

[Jonnie_Knuckles]

Originally Posted by pinkfloyd

I'd get the alternator tested then go from there. If that's not the problem then there is something draining the batteries when it's not running.

alternator is fine - brand new replaced 10,000 miles ago and tested earlier today when i actually got it running....

and the drain is obvious - any ideas as to where its draining from??? relay maybe??

[SteveKran]

Take your alternator to auto zone or advanced auto type place and have them test just the alternator. (Not all places have the machine to test it, so make sure to call ahead)

My truck was doing something very similar to yours and it turned out to be the alternator. It only took about 10 minutes to take it off. Piece of cake.

I used a 1/2" cheater bar to pry back the belt tensioner so I could slip the belt off the top of the alternator. The rest is a piece of cake

[TexasR.N.]

Welcome to the .ORG. Find someone with a good code reader and scan the truck for codes. I haven't heard of the WTS flashing quickly, but I am sure someone smarter than I, will see this post and chime in. If the alternator is good have you done any electrical work like adding a stereo, lights etc......?
Craig

[pinkfloyd]

do you have any power to the truck when you're not trying to jump it, do your lights work etc. ?

[Jonnie_Knuckles]

stereo is a pioneer navi/dvd/cd-mp3 radio professionally installed by a well known audio shop - and all performance parts with the exception of my turbo were professionally installed as well - turbo i did myself.... - ill have the alternator tested again at a different autoparts store to see if i get a different answer....

[Jonnie_Knuckles]

Originally Posted by pinkfloyd

do you have any power to the truck when you're not trying to jump it, do your lights work etc. ?

when the jumper cable is not connected, i have absolutely no power(no keyless entry,horn, lights, dash laight, chimes, etc.... nothing....) going to the truck.....

[pinkfloyd]

Years ago I had a similar problem with my explorer. It turned out to be a relay. you can check your relays to see if one of them is bad.