What causes intermittent electrical faults?
The two basic problems that can occur in wires / wire harnesses are open and shorts circuits. Intermittent are usually caused by some mechanical change like temperature, vibration, moisture and physical stress that temporarily changes the electrical characteristics of device under test.
What are common electrical problems in automotive circuits?
Top 7 Auto Electric Problems
- Dead Battery. A dead battery is the most common and obvious electrical problem.
- Battery Will Not Charge. However, a battery that will no longer hold a charge will need to be replaced.
- Bad Alternator.
- Fatigued Starter or Solenoid.
- Bad Battery Cables.
- Blown Electrical Fuses.
- Failed Spark Plugs.
Can a stalling engine be intermittent driveability?
Intermittent driveability problems of any kind are always a challenge to diagnose. When a customer brings you a vehicle and complains of a stalling problem, you may not have much to go on other than their description of what’s happening and when it happens.
Is there check engine light for intermittent stalling?
Many times, there will be no check engine light and no fault codes to give you a clue as to what might be causing the engine to stall. So the trick to diagnosing an intermittent stalling problem is to catch the vehicle when it’s acting up — and that rarely happens when you have the vehicle in your shop.
How much does it cost to troubleshoot an electrical problem?
Troubleshooting electrical problems is a tough chore and one most automotive repair shops will not perform without telling you they charge an $80-an-hour diagnostic fee. This project will give you some tips for troubleshooting your electrical system, but it’s not meant to be a step-by-step guide for fixing all of your problems.
Why does my Grand Cherokee have intermittent failure?
May just have to go the legal route, sad to say. To spend that much money, in earnest, on a repair and to be back at the same place I started is unacceptable. Lately, one of the symptoms is that the intermittent failure is triggered by bumps in the road, bumps from road lane reflectors, etc.
What causes intermittent errors in a wire harness?
There are three basic problems that occur in wire harnesses: opens, shorts, and miswires. When these errors occur sporadically, they are described as intermittent errors. Intermittent errors are usually caused by some mechanical change such as temperature, mechanical vibration, or physical flexing.
Can a corroded wiring harness cause a problem?
Loose or corroded wires in your wiring harness can be a real cause for concern. Since the wires don’t have constant contact with the ignition circuit, it does not receive the volts it needs. With the lower voltage, the ignition will not be able to keep your engine on when it is slow. 2. Problems Starting the Vehicle
How to test for intermittent errors in harness assemblies?
Testing for Intermittent Errors in Cable and Harness Assemblies 1 Make sure that your harness tester and interface fixturing support the detection of intermittent problems. 2 Use testing for feedback and take appropriate action to remove root causes, rather than just attempting to test the… More
What does it mean when electrical connection is intermittent?
An intermittent open, or high-resistance connection, occurs when there is temporarily no electrical connection or weak electrical connection (high resistance) from one end of a wire to the other. This can occur in the contact-to-contact mating at either end, the contact-to-wire bond at either end, or the wire itself.