Phandango
New Member
- Joined
- August 17, 2013
- Messages
- 4
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- Year, Model & Trim Level
- 1994 Explorer XLT 4.0L
I've searched and read the other posts about this but am still stumped. My newly replaced alternator is not charging my battery. I'm having to charge my battery every night until I resolve this. Here's a list of things I've done so far:
1994 Explorer XLT, 4.0 litre.
Symptoms:
Alternator not charging battery.
Voltage on instrument panel when running is on the "N" with freshly charged battery.
Gets lower on the "N" as I drive.
Not running fan, radio, or any accessories.
Cannot drive it at night for fear of it stranding me again due to lights draining battery.
Replaced alternator 90 amp
Had O'Reilly test battery, where I bought it from in 8/2011, thay said it's good.
Non load battery tests at 12.8 volts
Load tests at 12.1 volts, engine running, no accessories.
12.1 volts engine running, lights on, fan on.
EVM test with negative battery terminal and lug on back of Alt is 12.1 volts, running or not.
There is no fuse between battery and Alt, removed before I bought it.
Fuses on Power Dist box under hood all good. Pulled each one and visually inspected them.
Interestingly, when testing ports that Alt fuse plugs into in Pwr Dist box, it tests at 10.8 V. The terminal next to it that runs the light under the hood shows 12.1 V.
Ohms on negative battery wire is .1, as is positive wire.
Removed negative wire on engine block, cleaned, sanded and replaced.
Fuses underneath dash all good, pulled each one and visually inspected them.
A few years ago, the actuator arm on the steering column wouldn't release the switch, so I re-wired it to start using 2 rocker switches, one for Access., one for Ignition, and a push-button to start it. I've experienced no problems with this at all but am wondering if this could cause a charging system malfunction, but all-of-a-sudden? Also, I read that if the lamp behind the volt meter guage on the instrument panel is bad, the alternator will not "excite" and not charge the system. Mine is dim but not out.
I'm seriously frustrated and perplexed here. Is there anything rlse I need to test? Is there a common issue with this and a common solution? It starts fine when the battery is charged but have had to get a jump on more than one occasion.
Any insight or help is seriously appreciated. Thank you in advance.
1994 Explorer XLT, 4.0 litre.
Symptoms:
Alternator not charging battery.
Voltage on instrument panel when running is on the "N" with freshly charged battery.
Gets lower on the "N" as I drive.
Not running fan, radio, or any accessories.
Cannot drive it at night for fear of it stranding me again due to lights draining battery.
Replaced alternator 90 amp
Had O'Reilly test battery, where I bought it from in 8/2011, thay said it's good.
Non load battery tests at 12.8 volts
Load tests at 12.1 volts, engine running, no accessories.
12.1 volts engine running, lights on, fan on.
EVM test with negative battery terminal and lug on back of Alt is 12.1 volts, running or not.
There is no fuse between battery and Alt, removed before I bought it.
Fuses on Power Dist box under hood all good. Pulled each one and visually inspected them.
Interestingly, when testing ports that Alt fuse plugs into in Pwr Dist box, it tests at 10.8 V. The terminal next to it that runs the light under the hood shows 12.1 V.
Ohms on negative battery wire is .1, as is positive wire.
Removed negative wire on engine block, cleaned, sanded and replaced.
Fuses underneath dash all good, pulled each one and visually inspected them.
A few years ago, the actuator arm on the steering column wouldn't release the switch, so I re-wired it to start using 2 rocker switches, one for Access., one for Ignition, and a push-button to start it. I've experienced no problems with this at all but am wondering if this could cause a charging system malfunction, but all-of-a-sudden? Also, I read that if the lamp behind the volt meter guage on the instrument panel is bad, the alternator will not "excite" and not charge the system. Mine is dim but not out.
I'm seriously frustrated and perplexed here. Is there anything rlse I need to test? Is there a common issue with this and a common solution? It starts fine when the battery is charged but have had to get a jump on more than one occasion.
Any insight or help is seriously appreciated. Thank you in advance.