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Headlights dim when on the gas pedal.
#769972 January 21st 2021 9:48 am
Joined: Sep 2015
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When I let up off the gas pedal, the headlights brighten up, but when holding the gas pedal, even on level ground, the headlights dim.

Re: Headlights dim when on the gas pedal.
chevydude1987 #769982 January 21st 2021 4:11 pm
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Rust N Dents
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Sounds like an issue with the alternator or a bad ground.


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Re: Headlights dim when on the gas pedal.
chevydude1987 #769986 January 21st 2021 5:49 pm
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Belts do not always squeal when they slip.

I've witnessed this with an optical tachometer on a boat. a 2 to 1 pulley ratio was reading as if it were a 1.5 to 1 at 1200 rpm but was 2:1 at idle

A slipping belt would most easily explain this symptom, but do always find and clean the grounds wherever you find them

Re: Headlights dim when on the gas pedal.
chevydude1987 #770070 January 23rd 2021 1:25 am
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I agree with Rusty. I bet it's a ground. All good advice though.


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