mikecsti Posted November 1, 2019 Share Posted November 1, 2019 Back story 142k I changed the alternator 8 months ago because it dead. The battery is 2 years old. I checked the voltage and it seems to all be good once I changed the alternator. but in that past two days it just started doing this. At idle with the park lights on warming up the car everything seems fine, I put on the blower fan and when the cooling fans cycle there is a crazy drop in voltage in the system, like the the whole dash interior lights turn off and come back on. Its only like two seconds but it's not good. I have not checked it with my voltage meter yet. I was thinking one or both of the cooling fan motors are going because there drawing crazy voltage on the system. I'm I right? has anybody had this problem before? thanks Link to comment Share on other sites More sharing options...
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