850 dash warning lights

crlande · Post by **crlande** » Tue Jan 28, 2020 1:04 pm

Ok board members, I got one for you... Hopped in my 850 this morning and started off to work. Less than mile and all the warning lights and headlights start to flicker. Turn around and hop in another car. This afternoon the car fires up, the air pump sounded muffled compared to the usual wind up, all warning lights are on, occasional flicker but all on. I jiggled some cables under hood, fiddled with the key while in ignition, turned on accessories, windows, headlights with nothing different. Car idles fine and starts each time. Did not check the diagnostics boxes under hood yet. Where the heck do I start diagnosing?
Thanks,
Carl

misha · Post by **misha** » Tue Jan 28, 2020 1:53 pm

Ignition switch or alternator.

Cookeh · Post by **Cookeh** » Tue Jan 28, 2020 2:57 pm

I'm with misha on this one, you can test the ignition barrel/switch by jiggling the keys slightly with engine running and seeing if that temporarily fixes the problem.

crlande · Post by **crlande** » Tue Jan 28, 2020 3:11 pm

Yes I thought the same. Tried jiggling the key in ignition several times, no difference.

misha · Post by **misha** » Tue Jan 28, 2020 4:27 pm

Did you checked the alternator output voltage?

crlande · Post by **crlande** » Tue Jan 28, 2020 6:46 pm

I have not checked the voltage output yet.
Thanks for your idea/ information.

crlande · Post by **crlande** » Wed Jan 29, 2020 3:03 pm

Two days of doing nothing to car, the battery was 12.2 with engine off. Started car and battery was 11.5 while engine running. I am leaning towards alternator issue.

misha · Post by **misha** » Wed Jan 29, 2020 3:24 pm

Check voltage output directly on alternator....on b+ and alternator housing.
We need this to determine if alternator is bad or battery cables are bad.

crlande · Post by **crlande** » Thu Jan 30, 2020 12:40 pm

Today the battery was 12.2 before starting. The B+ and alternator housing was 11.45 as was the battery 11.45 while running.

misha · Post by **misha** » Thu Jan 30, 2020 1:33 pm

Yep....alternator is shot.
Could be voltage regulator or the alternator itself.

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