The Battery is brand new (replaced yesterday after problem started) and the alternator tests good. The voltage meter on the dash reads low and the battery (charging system) light is on. The truck is running strong without dogging down with all accessories on for 30 minutes. Ideas?
2007-04-29 05:18:58 · 9 answers · asked by Jimmy 2 in Cars & Transportation ➔ Maintenance & Repairs
Alternator was check on the truck.
2007-04-29 08:52:02 · update #1
hi, id start by checking all of the ground straps.also make sure all of the connections are tight.
2007-04-29 05:38:45 · answer #1 · answered by jason t 2 · 0⤊ 0⤋
I agree with b4zz about checking voltage... should be at 14.1 or so at battery with no load 13.5 v at least with all accessories on.
You said the alternator checks good, but as the other said, double check all connections especially at the battery and the cable from the alternator to the starter solenoid on the sidewall.. Both are very good points for corrosion and ultimate problems
But you may need a shop to check the whole system instead of just the alternator if you did it off the car. Also if you used a regulator from autozone , I sometimes run across those that while it will charge the system, it will show bad on the dash for some weird reason (I think the regulator has the wrong internal voltage compared to what the vehicle wants to see.
2007-04-29 05:41:45 · answer #2 · answered by gearbox 7 · 0⤊ 0⤋
If the voltage is low and alt lite on the alt is not working. If it tested good off the truck then it is either hooked up wrong or a rat ate the wires and it isn't getting the right signal to start charging. Talk to the store(Kragen probably) that tested it and find out if the alt has the voltage regulator in it or not. Some systems are triggered by the computer and will not charge even tho the alt is good. ALSO CK THE BELT...YOU CAN'T BELIEVE HOW MANY TIMES I HAVE SEEN A GOOD LOOKING OLD BELT SLIP AND NOT MAKE NOISE OR ANYTHING.And it will not fully charge. Put a voltmeter on the big output terminal of the alt to see what it is doing. Belt problems will have a higher output at idle and slip at higher rpm. Also a burnt fusable link will cause the alt to charge at the back terminal but not charge the battery and still run the assessorys. Lots of things can go bad in these systems. A trip to the pro might be in order.
2007-04-29 05:36:42 · answer #3 · answered by MIKE H 1 · 0⤊ 0⤋
Was the alternator tested in the truck or on a bench? If it was tested in the truck then there is a problem between the alternator and the battery(Like a blown fuse link). If it was tested on a bench then there's more than likely a problem with the voltage regulator( bad connection(s), no ground, no input voltage). Hope this helps, good luck.
2007-04-29 05:46:50 · answer #4 · answered by tvcarvcr2 2 · 0⤊ 0⤋
If you say the alternator is good because you measured 14 volts at the battery, but the instrument panel is seeing less voltage, you have a bad ground wire between the engine and the chassis. The battery and alternator are grounded to the engine, but the lights and instruments are grounded to the chassis, so you have to have a good connection between the two.
2007-04-29 11:25:13 · answer #5 · answered by Nomadd 7 · 0⤊ 0⤋
When the charging light goes on recheck the alternator. This is an easy check with a voltmeter. While under there check the battery connections and clean them real good. Also check connections on the alternator as well as grounds.
2007-04-29 05:25:51 · answer #6 · answered by b44z 3 · 1⤊ 0⤋
sounds like the gas shutoff change is undesirable or a wiring concern for it...you should attempt bypassing it or cord a attempt gentle into the circuit and notice it the means shuts off at fifty 5...verify the pump relay to boot. some fashions or automobiles have a low oil stress shutoff to boot...in line with probability verify that throughout that case geared up.
2016-10-14 02:16:58 · answer #7 · answered by ? 4 · 0⤊ 0⤋
when the field in the alt. dies, that tripps the light.
the stater, and diode black may need to be looked at. Just because there is readable out put from the alt, does not mean it is good.the out put can drop from 60 amps to 25, and read good, when in fact, it is weak and not up to factory specks
2007-04-29 05:36:32 · answer #8 · answered by duster 6 · 0⤊ 0⤋
I also asked this same question many times, and haven't gotten a good answer
2016-08-24 00:55:52 · answer #9 · answered by Anonymous · 0⤊ 0⤋