If battery is weak put it on charger less than hr truck cranks now wondering if it is alternater

Asked by Aug 17, 2014 at 05:09 PM

Question type: Maintenance & Repair

5 Answers

105,695

If it now cranks and runs normally. Test alternator it should be putting out around 14.5 volts or so.

1 out of 1 people think this is helpful.

If I start truck can I pull battery cable to check to see if alternater is bad

148,375

No don't do that. Can cause damage to diodes and ECU. Have it tested at AutoZone, O'Reilleys someplace like that..usually they will test free.

1 out of 1 people think this is helpful.
148,375

What truck are we talking about here?

1 out of 1 people think this is helpful.
105,695

Yes please don't do that. Old school testing does not have good results on newer vehicles. Can cause expensive damage. Go to auto zone and have them test it. Only takes a minute or two.

1 out of 1 people think this is helpful.

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