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What are some signs other then dimming lights that a alternator is going bad? Tonight everything seemed fine with my truck untill i went to start it after leaving barnes and noble. I put the key in and tured, heard a pop then eveyrthing went dead. Nothing worked at all. Called triple A they came and gave me a jump start. It worked but i couldn't believe i needed it. Its a brand new battery purchased in september.
What else could've caused what seemed like a short?
how did it act after it was jumped? if it acted kinda' funny, like it had lost power or maybe the radio or something was dim or faint, it probably is your alt. i've been going through some charging problems my self the last few days. there are ways to check it, but most auto part stores will do it for 'ya free.
Suffering from a life long F100 affair
Usually is what i do, is take off the battery terminals and see if it is still running, if it dies, it is not charging. Just just it is not charging, does not mean the alternator is bad, could be the regulator, or the wiring. If it keeps running, for the moment it is fine. Something might be grounding out, and you hearn a loose wire connectoin weld its self to something.
2003 F-250 4WD Auto, 6.0, ex Cab, scan gauge, blue spring, Ed's Atlas 40 premium FICM, Red ELC coolant and coolant filter.
2003 E-450 2wd auto, 7.3, chassis cab with utility box.
2002 E-250 2wd auto, 5.4, man van.
1970 f-100 2wd, c-6, 425hp 390, 3.90 w/ minispool
2006 five hundred 3.0 DOHC w/ CVT
Originally posted by 78fordman Usually is what i do, is take off the battery terminals and see if it is still running, if it dies, it is not charging. Just just it is not charging, does not mean the alternator is bad, could be the regulator, or the wiring. If it keeps running, for the moment it is fine. Something might be grounding out, and you hearn a loose wire connectoin weld its self to something.
I do not recommend taking the battery cable off with the engine running. You can blow up stuff in a hurry. I learned this the hard way. Pulled the cable off a pickup I had onetime, it ran for about 10 more seconds and then quit. Would crank but not start after that. Know what I did? I blew the ignition module. Lesson learned.
As far as the original problem, I would try the easy stuff first. I would take the battery terminals loose and clean them.
when it got jumped the idle was off, not normal at all. If i turned the wheel to much the engine would die, if i came to an abrupt stop it would die or just stop at a light it would dip down to almost 100rpms then go up to 700rpms then even out at 400rpms.
It did this today today but not nearly as bad. The lights would dim as the rpms dropped.
Whatever did happen it feels like I have another engine in my truck. It feels like there is more power.
What could've caused this problem? I mean it ran fine before i went into barnes and noble. When I put the key in it lit the dash up like normal but as soon as you go to START everything went dead. I don't get it.
not to sound stupid but what would cleaing the connections on the starter have to do with anything? It's not like it wanted to crank there were no lights on the dash nothing lit up, no noises at all. Where is the V/R located? Battery terminals are clean as can be.
while the truck is off, try the lights. if lights are dim or dead, then it isn't starter connections. i have a feeling it probably is you're altenator. the only weird thing is that popping sound. try and see if batt. takes charge with external charger. or if you have a voltmeter in truck or a handheld multimeter, then jump off truck and check if voltage raises, if so then your alt. is good.
Suffering from a life long F100 affair
It was that small piece of lead that was still in contact with the battery burning away at the battery/cable connection as the rest of the battery clamp was insulated by corrosion and or crud!
The man said it more than once, and he was right, "so pretty please, with sugar on top, clean the friggen connections!"
In part (the last two lines) shamelessly stolen from Pulp fiction!
Had to sell the Gray 1991 F250 standard cab, 7.3, E4OD, 3.55:1, stock wheels and tires.
It had a verified 19 mpg city taking off slow as hell then shutting it down at red lights, and with the radiator grill blocked flush, no bed cover, "drag shoot" mirrors still on I got 24 mpg at 50 to 55 mph on the freeway empty!
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