Close
Why does my truck run poorly with lights on?
1994 Chevrolet 1500 Pickup

Why does my truck run poorly with lights on?

(1994 Chevrolet C1500)
Trucks runs ok when the headlights are off, but when I turn accessory and headlights on the truck runs very poorly and struggles to accelerate. Truck has new battery, battery to ground wire, cap+rotor, ignition wires and spark plugs.
What seems to make the problem better or worse? Worse with lights on
How long have you had this problem? Since I’ve had the truck
Tags: chevrolet, c1500
1 answer & 0 comments
Popular Answer
on July 23, 2019

Have alternator voltage output tested will ALL accessories on - should see 13.5 volts minimum.
Sign in to reply
General Diagnosis
$88 - $111 Learn More
on July 23, 2019

Have alternator voltage output tested will ALL accessories on - should see 13.5 volts minimum.
Sign in to reply

Similar Questions

View answers to similar questions from RepairPal's community of auto experts and enthusiasts.
All lights work on my 88 chevy silverado but low beam doesn't work. change one bulb and headlight switch inside cab,...