Headlights and dashboard lights went haywire and then just SHUT OFF while driving at night. Van still drove though. What could be the problem?
I am pulling the battery to take it in to have it tested. Bad alternator possibly?? how can I
test the alternator without pulling it? I am no mechanical genius by far, but have fixed
small stuff myself on my vehicles such as alternator, brakes/rotors, etc. The van is at
about 140,000 mi and have already had †he wheel sensor fixed and head gasket done.
Should i just take it to my mechanic and have them do a diagnostic on it? PLEASE save
me money. Thanks.
battery has to be fully charged to perform a load test. also, to test the alternator output, start the car, set your multimeter to volts d/c. put the red test lead on the pos post on the battery and the black on the negative. turn on the headlights,and wipers, just a few accessories. the alternator should give a fairly steady 13- 14.5 volts all the time. if not, it is bad.
Mike took battery in to have it charged because thought my charger was not working properly. They could not get a full charge either meaning it was bad. Put new battery in and did what you said. Yep, obviously need alternator as well. Figures. Also did a double check and unhooked negative terminal while van was running...engine immediately shut down. Thanks for saving me cash on a diagnostic test.
glad to be of help. have a good turkey day. Mike.
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