ST165 weird flickering

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ST165 weird flickering

Postby Mateo » Fri Dec 24, 2021 10:14 pm

My 165 has had this weird issue since I bought it where the indicators would flash and dim the interior lights and corner lights and also the fog lights. The lights as a whole aren't as bright until I rev it at idle and also dim when touching the brake pedal. I'm not really sure where to look because this issue was with the previous owner and not me.
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1988 Toyota Celica

Re: ST165 weird flickering

Postby simple » Sat Dec 25, 2021 12:15 am

Sounds like a bad ground to me
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Re: ST165 weird flickering

Postby Mateo » Sat Dec 25, 2021 2:00 am

simple wrote:Sounds like a bad ground to me


The battery itself has a good ground, I recently redid the charging system due to a different issue and the lights still flickered before. Is there a ground for the interior lights somewhere?
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Re: ST165 weird flickering

Postby grip-addict » Sun Dec 26, 2021 12:56 pm

It could be a bad ground or it could also be a bad voltage regulator in the alternator. Do the windshield wipers move faster if you rev it?
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Re: ST165 weird flickering

Postby Mateo » Sun Dec 26, 2021 5:14 pm

grip-addict wrote:It could be a bad ground or it could also be a bad voltage regulator in the alternator. Do the windshield wipers move faster if you rev it?


New alternator and wiring to the alternator. They do, just at idle. I think the previous owner messed with the charging system fuse and the fuse isn't making a good connection because the port is stretched out
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Re: ST165 weird flickering

Postby whitealltrac » Tue Dec 28, 2021 9:26 pm

I have this same issue. What ground should I look for? just battery negative post or connection to body or something else?
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