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2012 Low power when using a/c

DoubleD

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OH
Country
United States
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Ford Fiesta SE
#1
Hi, thanks for reading. If I turn on my air conditioning while driving my manual 2012 I seem to lose some power. It's also dimming the lights, as well if I use the power windows. I've had issues going up hills using the a/c too. I've had some issues before with a low beam relay and fuse box terminal that seems to get wet and corroded. Right now the rotted out section has a piece of copper wedged in with lithium grease. Doing this mitigates replacing the fuse box terminal which seems difficult as I don't have much harness slack. I'm wondering if my electrical "bandaid" is effecting my a/c, or power in general. Is it possible to buy a stronger alternator for my car?
 

scotman

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Grass Lake
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MI
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2011 Fiesta SE hbk Blue
#2
There are probably more bad circuits in that distribution box. The power is having a tough time squeezing past all the resistance.
 
OP
D
Messages
23
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11
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Place
State
OH
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United States
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Ford Fiesta SE
Thread Starter #3
I just ordered a cheap multimeter to test, thanks scotman! I'll report back after I do some homework about testing for bad circuits and doing the work
 

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