98 Ford Exploder V-6, after replacing a very dead battery (bad cells+8 yrs old) checking the alternator showed at 2000rpm only 65 peak amps on the meter. Can the alternator fade or do they just go out completely? or is this still a good charging amperage? the Exploder sits for 2 weeks at a time and then driven for 3-4 days then sits for 2 weeks again, should I get a new alternator or try one of those solar trickle chargers?
2007-08-18 09:31:18 · 8 answers · asked by Gordon B 1 in Cars & Transportation ➔ Maintenance & Repairs
yes....but you have replaced your battery......probably doesn't need much of a charge at this point....the regulator sense,s this & regulate,s the charge strength accordingly.......if your battery was in need of a serious charge....the amperage would increase.....try checking voltage....should charge at minimum...12.5 v. to maximum 14.0 volt,s.....if your within this range your alternator is performing normally....now add load [ head lamp,s , radio , blower fan , etc.]....if it stay,s within limit,s your good to go.......65 amp,s is weak but may not be calling for any more...a slow charge is best [ unless battery is nearly dead ]....when checking under load....check amp,s....if amp,s increase or at least stay the same....your ok....good luck!
2007-08-18 09:57:11 · answer #1 · answered by slipstream 7 · 0⤊ 0⤋
It doesn't sound like your alternator is bad...it is may be weak because of its age, but since your car starts fine the two days you use it and you have problems only when you let it sit for two weeks, and knowing that you just put a new battery, I would suspect a slow drainage somewhere. Make sure that all the lights are off, the radio is not on and whatever could drain the battery out is turned off...you may have a short somewhere too.
Keeping your battery charging while the car is sitting for a long period is good for the health of the battery.
Good luck!
2007-08-18 09:48:57 · answer #2 · answered by Mazda man 6 · 0⤊ 0⤋
Anything is possible. Since the car sits for weeks at a time, it would not be a bad idea to hook up a trickle charger to it. Either a solar one or a plug in one. Letting lead acid batteries sit discharged over time will cause them to go bad and the cells to short out from the sulphate. Look at specs for your alternator and see what it is rated at. If it is a 65A alternator then it is working fine. If you need a larger one, then think about replacing it with a HD alternator. good luck.
2007-08-18 09:44:54 · answer #3 · answered by Fordman 7 · 0⤊ 0⤋
What meter you using ?? Alt. don't put out 65 amps. Should show approx. 15 volts at idle. The amps probably about 30 max. usually around 15. The amps vary according to load on battery. The voltage is the important thing. If you have less thn 14.5 volts at idle you got a alt. problem
2007-08-18 10:08:33 · answer #4 · answered by tronary 7 · 0⤊ 0⤋
yes It can be the voltage regulator or the windings. The windings break down due to heat and age. Some alternators do not put out peak voltage until 15oo rpm
2007-08-18 09:37:00 · answer #5 · answered by miiiikeee 5 · 0⤊ 0⤋
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2016-10-10 12:11:34 · answer #6 · answered by ? 3 · 0⤊ 0⤋
YES THE ALT. CAN SLOWLY LOSE CHARGING CAPACITY
2007-08-18 09:34:42 · answer #7 · answered by jon_wayne89 5 · 0⤊ 0⤋
i would just disconnect the negative cable while i was gone
2007-08-18 09:37:49 · answer #8 · answered by John St.Louis 5 · 0⤊ 0⤋