Skip the auto shop - Our mechanics make house calls

Q: Battery grounded power wire - 1980 Chevrolet C30

asked by on

I bought a used truck that sat in a driveway for a year, and I am trying to get all of the problems solved. My spark plugs became fouled after driving it today, and I bought a new cap, rotor and wires. I am going to tune it up so it runs much better with new spark plugs of course. I flooded the engine when trying to start the truck. I also melted the power wire going from the battery to the starter.

After putting in a brand new battery and ground wire the other day the truck cranked real slow like the battery was weak. I didn’t touch the power cable. The starter looked very new because it’s still shiny. The negative battery wire was grounded on the alternator bracket by the previous owner. Should the battery be grounded on the chassis? What caused the power wire to melt? What is causing the motor to crank over weak?

A: Your first starting effort probably created...

Your first starting effort probably created enough heat within the starter motor to melt the windings, shorting them. This just causes more power to be directed to an already hot starter motor. Kills the starter. Take it out and have it checked. It’s OK to ground to the engine (via the alternator bracket), but you also have to have an adequate ground connection between the engine and chassis for electrical gauge sensors, ignition, etc. If you would like, a certified technician from YourMechanic can explore these issues at your home or office, including the possible replacement of your starter.

Was this answer helpful?
Recommended services
Get a Quote

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Gauges lose power sometime, battery being drained.

Hello - quite likely, the inconsistency with your gauge operation and the occasional dead battery are related, with a short in the wiring perhaps. This problem can be diagnosed by connecting an ammeter to the positive (red) battery cable, observe...

Q: Bad response from gas pedal

This condition is commonly caused by defective spark plugs, wires or ignition coils and occasionally all 3! Service Bulletin number #SB-10250 addresses this issue, and in most cases if you’re under warranty the dealership will replace these items free of...

Q: when I turn the ignition switch to on, the ac compressor clutch will engaged. Disconnected the ac control switch and still

On some earlier years of Chevy they used to have the A/C compressor to come on when you are turning off the engine to help the prevent the engine from suffering from excessive after-run conditions that the engine will continue...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...