Welding On Car Ecu

This computer is essential to your car functioning and you would not be able to drive if the ECU becomes damaged or destroyed. There are usually just small wires connecting them together.

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Ive welded on many different cars MIG and TIG and never had a dead ecu.

Welding on car ecu. I need to MIG weld a bracket on my car dont want to fry the ECU. Typically ahead of welding MIG or ARC I would disconnect the battery to prevent damaging any electrical systems on the vehicle. Never done it but on a related note.

Disconnecting the battery does not assure EM damage and actually can help prevent it by presenting a load to the input of the battery powered and attached devices mostly the ECU when the car is off. Ordered new ecu and no issues since. Welding the body is the same it is often isolated from the frame and engine.

Any factory vehicle Ive welded no problem without disconnecting the battery or ECU but the few excerpts I can find on the net say with Holley HPs to remove the ECU from the vehicle. The key to this is the elimination of the weld circuit searching for a path of least resistance for a ground. MikeMilburn Mechanical 22 Mar 03 1013.

By having the earth lead as close as possible to the welding will minimize the potential difference and disconnecting the ECU as well as the earth will isolate the sensitive equipment and not allow a path for the static to travel. Most garages doing arc welding on your car disconnect the negative terminal of the battery. I need to MIG weld a bracket on my car dont want to fry the ECU.

Or 100 of the time Im in my garage or not in a rush and much less when im at the track on a lemons car getting the exhaust to stay put. The problem when it comes to using welding to repair or upgrade your vehicle is due to the high amperage generated by the arcThis high frequency current can damage essential electronic equipment such as the Engine Control Unit ECUsensors and even activate the airbags. Login or Sign Up Logging in.

I have welded on many other models without precautions or problems but never on a super duty. Usually this is the only precaution needed. Checked everything we could think of and then realized the battery was not unhooked before the feller started welding on the cage.

Welding the return finds its way through the oxy sensor through the ECU to ground. Sent from my iPhone using Tapatalk. Swapped ecu with another buggy and all was good and the other buggy had same issues he was having.

The SPi ECU is a delicate electronic instrument as are many of the sensors. Welding on car and ECU. The problem lies with the ECU and the welder sharing a single conductor the vehicles body.

Why Does This Happen. However to be on the safe side I prefer to disconnect the alternator lead and after a short wait also the ECM cable. Attaching the ground close to the welding operation is best practice.

TIG welding can be performed safely once these electronics are protected. Start date Sep 29 2014. Which normally wouldnt be an issue however mine is hidden under the dash and would be a bear to remove.

Joined Nov 9 2006 Messages 407 Reaction score 2 Location leicester Your Mercedes SLK 55 A 140 Sep 29 2014 1 Having some parts fabricated on the exhaust system on my SLK which will require positioning and tacking into position on car. If you are doing any sort of welding on the car even if its not anywhere near the ECU or sensors REMOVE THE ECU AND DISCONNECT THE ECU GROUND WIRE. This particular vehicle has quite a large number of electrical systems including an alarm system which seems able to activate even when the battery is disconnected.

Ford recommends disconnecting not only the battery but all of the electronic modules to avoid damage when welding on Super duty F-series trucks. Protecting the ECU is necessary if. We routinely weld on new vehicles trucks from 12 ton to tandem and 6WD plows all with electronics to control the engine as well as electronics to control the saltplow gear without disconnecting the battery.

Welding on cars with ecu. If you can you should unplug the ecu. The most important aspect of TIG welding on a modern car is protecting the cars ECM and digital electronics which can otherwise be damaged by the high frequency generated during the TIG welders initial voltage spike while starting an arc.

About 50 of the time I unplug the Ecu. Welding and creating an electrical current through the ECU can damage the computer irreparably. From this evaluation it is confirmed that welding a vehicle does risk damage to the ECU and disconnecting the batterys negative terminal will mitigate that risk.

Will I be okay to disconnect the main plug at the ecu - anything else. Fried green electronics are not good. My ecu has a pretty simple plug to disconnect for the full protection factor I always look for disaster.

If you ever do any welding on anything equipped with a magneto sprint car supermodified etc be sure to at least put some cardboard between the points or better yet remove the mag. Set you ground clamp as close as possible to the area to be welded with a clean connection. The ground wire is located on the triangular support bracket for the bulkhead crossmember above and behind the ECU.

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