Grounding across frame welds
 

Has anyone experimented with the resistance across welds or various parts of the chassis?

Because if a welded joint in the frame were to slowly corrode or get dirty it could build resistance and screw up the grounding plane of the car.

Dave

you are thinking way too much.

Too early for ya?

BTW you should read the old threads on 3k hesitation.
I've got it, and I will improve the engine->frame grounding connections. I'm just wondering if anyone has ever tried checking/improving the frame->frame connections.

This topic is relatively simple compared to the old discussions.

Dave

i suppose you could bridge across welds, but id hope the car isnt to the point where this is a problem

The car is fine. This is an open question about the grounding problems this car has in general. I see those welded joints and I have to wonder if they are transmitting current like they did when the car was new.

Dave

Bump. I really want to know if someone has tested this part of the grounding system.

There is no way to test the electrical resistance of the welds because there is no way to isolate them.

And I agree with FormerPorscheGuy; you're thinking way too much ;)

As long as the weld is solid, it will transmit current properly.

The resistance from any part of the engine bay to another part of the engine bay, when properly grounded with stock grounds, is so low it's not even worth making an issue about it.

I seem to remember seeing around .1 ohm or around there when testing from the fender to the top of the engine.

I'm with adamc. If the welds are so bad that the electrical connection is poor, then you've got much bigger problems :p:

You know what's a great fix for the 3krpm hesitation?

A Power FC. ;)

Well that's good enough for me.

I will look for any bolted connections though and see if there is significant resistance across them.

Dave

Tell me about it. You know what's cheaper than a Power FC? $2 grounding wires. :)

Yeah. Termites. :p: