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Can welding damage alternator?
With that unpleasantness out of the way, it is highly likely that the voltage / current applied by the welding gear has damaged the low voltage control electronics responsible for operating the alternator.
Can welding damage ECM?
Do not ground the welder to electrical components such as the ECM or sensors. Illustration 1 – The welding current will not cause damage to any of the associated components. Connect the welding ground cable as close as possible to the area that will be welded.
How do I know if my ECM is fried?
These are the symptoms of a bad or failing engine control unit (…
- Check Engine Light comes on. An illuminated Check Engine Light is one possible symptom of a problem with the ECU.
- Engine stalling or misfiring. Another symptom of a bad or failing ECU is erratic engine behavior.
- Engine performance issues.
- Car not starting.
Can you weld on a car body?
Many welding techniques apply to autobody work. Most of this welding is now electric, though gas welding is still sometimes used. MIG, TIG, and resistance (spot) welding are the main approaches covered here. This method was once used to join autobody panel metal, both in production and for repair.
Can I weld my muffler?
The main downside to welding a muffler in place is the skill required. This isn’t a project everyone can do. You must be able to create an airtight seal for the exhaust system to function properly. This requires proper skill as well as the right equipment.
Can I weld on a car?
Yes. Welding on your car requires you to put electricity through the metal of the vehicle. Since the car’s metal is attached to the electronics of the vehicle, you can end up frying the electronics in the car.
What is the voltage of the ECU while welding?
The box labelled “ECU” is the engine control unit or engine management. This is the device we are trying to protect. V1 is the voltage across the ECU with the negative battery terminal connected whilst welding. V2 is the voltage across the ECU with the negative battery terminal disconnected whilst welding.
What happens if MIG welding on chassis damage cars ECU?
Most vehicles all have numerous grounding straps so an electrical surge could travel anywhere. I have never disconnected a battery & haven’t had a problem. Do pipe/rig welders disconnect their trucks battery every time they weld something on the back of their deck? I don’t think so.
What happens if you put welding gear on your alternator?
With that unpleasantness out of the way, it is highly likely that the voltage / current applied by the welding gear has damaged the low voltage control electronics responsible for operating the alternator. Modern vehicles use a control circuit which regulates the voltage in and out of the alternator to prevent over charging.
Can You disconnect the battery from a welding terminal?
Other people believe disconnecting the battery terminal has no impact on the ECU since the ECU is still connected on both terminals and the affect of disconnecting the battery only isolates the battery and nothing else. They believe the idea to disconnect is simply an old wives’ tale with no valid reasons to substantiate it. So who is right?