[Diy_efi] Welding on cars w/ ECU's??

[Eck, Joel (Houston)]

muffler shops (around here, anyway) rarely use anything but oxyacetylene =
torches. no electrical/emi/rfi concerns. I suppose that's not really =
welding, though. (brazing)

-----Original Message-----
From: Toyota Supra [mailto:turbosupramk3 at hotmail.com]
Sent: Friday, January 31, 2003 2:44 PM
To: diy_efi at diy-efi.org
Subject: Re: [Diy_efi] Welding on cars w/ ECU's??


i am interested to hear explanations to this as well, although from what =
i=20
have been told, you really should not TIG weld (or square wave weld) at =
all=20
on the car, whether the cables are connected to the battery and chassis =
or=20
not.
it can also damage sensors as well

-j





From: "Chris Spies, ATI ProCharger" <proddev at procharger.com>
>Reply-To: List for general do-it-yourself EFI talk =
<diy_efi at diy-efi.org>
>To: <diy_efi at diy-efi.org>
>Subject: [Diy_efi] Welding on cars w/ ECU's??
>Date: Fri, 31 Jan 2003 14:26:33 -0600
>
>Can anybody explain to me why it is you can not (at least the =
aftermarket=20
>manufacturers prefer that you not) weld on a vehicle while the ECU is=20
>connected (electrically) to the vehicle?  It seems that muffler shops =
weld=20
>on vehicles with factory ecu's all day long without trouble, however I =
have=20
>heard many horror stories of damaged aftermarket ECU's and ignition =
boxes=20
>when somebody neglected to disconnect the harnesses?  I have never =
really=20
>been given a good answer, I just follow the rules and hope to avoid=20
>disaster...
>
>-thanks
>-Chris
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>Diy_efi at diy-efi.org
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