Skip the auto shop - Our mechanics make house calls

Q: Electrical problems with car

asked by on

I had an electrical problem and ran a new ground wire. My car still has the same problem and now none of the electrical systems in the car work.

Hi there. On the right front wheel well, there are a series of fusible links which distribute battery power to all of the vehicle’s electrical systems. One is gray and is labeled "fusible link K," which supplies power to all of the interior electronic fuses in the fusebox. The power needs to be checked at the fuses of the interior accessories that are not operating to see if they correlate with the power loss. If power is present to all of the fuses that connect to the accessories not operating, then the link is ok. If not, the link will need to be replaced. If all non operating accessories have power, then the problem still lies in the grounding circuit.

By safely removing the negative battery terminal from the battery, the ground circuit can be checked for continuity with a ohmmeter. If the resistance is near 0 ohms, reconnect the battery. A voltage drop test needs to be conducted to the chassis ground and also from the chassis ground to the battery to ensure no excessive resistance is present. The voltage drop readings should not exceed 0.1 volts. All ground connections should be checked and cleaned if the ground side voltage drop is above 0.1 volts. You may want to enlist the help of a mechanic, like one from YourMechanic, who has the training and equipment to diagnose the electrical system issue.

Was this answer helpful?

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: Charging system failure.

Based upon what you are describing, it sounds like you may have a voltage supply issue due to the amount of power being delivered to the accessories, speakers, etc. that the system is required to produce. If the voltage being...

Q: every week or so my car will crank and when I put it into drive or reverse it will shut off and crank right back t

There is a technical bulletin out for your 1999 Tahoe put out by Chevrolet. It's number 00-07-30-006, 87-71-63, calling for the reprogramming of the transmission/engine program. You will need to have the dealer reprogram the vehicle for you. Before you...

Q: No heat

Hi there: In some instances, this problem is caused by a simple electrical issue, such as a faulty electrical relay or blown fuse to the heater core. It's also possible however, that you have a blockage inside the coolant system...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...