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so I have a 1989 Jeep Cherokee 4.0 and my altanater is good and so is my battery (had them tested) but when I have my lights on, heater full and radio my voltage drops really low, even when my heater is off but lights on I'll drive come to a stop And sameness thing volts drop radio goes out i don't know what to do also I'm ideling Arnold about 550/600 rpms in park is that's goo

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Answer #1: Posted by kcmjr on February 27th, 2019 2:37 PM

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kcmjr

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With the caveat that I an not an auto mechanic, I have done lots of car work. This sounds to me at least like a classic bad ground connection. What I would do if first thoroughly clean the battery cable ends with a battery brush. The I would make sure that the negative battery terminal has a good solid connection to the car chassis/engine block. Make sure there is not rust or paint under it. If that still doesn't help I would try new battery cables. Short of that I recommend having a qualified mechanic have a look.

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Answer #2: Posted by asif99 on February 27th, 2019 4:10 AM

asif99

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February 27th, 2019

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Cause a premature furnace breakdown: Constantly turning on and off puts extra strain on the furnace. This leads to a premature breakdown with expensive repair costs.
Increase your energy bills: Imagine turning your car on and off for every mile you drive. That's a wasteful way to drive. Similarly, your furnace needs time to run to work efficiently.