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Post by jamezruiz on Oct 17, 2018 22:37:46 GMT -6
As I was driving tonight my headlights were dimming dangerously low and my voltage would drop from 14.5 to 11 volts while I was doing 55mph in a dark highway. What is going on? I get home and it iddles between 12-14.5volts. battery is 2 years old
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RCA1186
Administrator 
Rob
Go Pack Go!
Posts: 4,836 
Staff Member
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Post by RCA1186 on Oct 18, 2018 6:02:08 GMT -6
Sounds like alternator issues, or maybe a loose serpentine belt (old belt, bad tensioner/idler)
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Post by jamezruiz on Oct 18, 2018 9:06:36 GMT -6
I've replaced the battery about two times since I've owned the car ... I know there is also another component in the charging system called thermister? Its in the battery area under the seat, can that be causing this issue ?I drove to the car this morning and charging was erratic maybe 2 times on the road . Here is the picture of my battery setup  |
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Post by jamezruiz on Oct 18, 2018 9:20:27 GMT -6
I did run an alternator test and when it was good idling in park it was at  and then when I caught it idling with low charge and pressing the gas and holding at 1500rpm it read this voltage from alternator  so issue with alternator then? |
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RCA1186
Administrator
Rob
Go Pack Go!
Posts: 4,836
Staff Member
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Post by RCA1186 on Oct 18, 2018 9:40:17 GMT -6
Both those are low for a good alternator although the first one is at least close to normal. Thermistor could be the culprit too check out this thread |
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Post by kyngofpop on Oct 18, 2018 11:03:58 GMT -6
Bad alternator. Replace. Been there, done that.
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Post by jamezruiz on Oct 18, 2018 23:59:58 GMT -6
Both those are low for a good alternator although the first one is at least close to normal. Thermistor could be the culprit too check out this thread I have looked into that and I was thinking of getting a replacement thermister...hope the cheap fix is the solution... If not off to the autoparts store to get an alternator |
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