I was working on my car and noticed my ground from my cat was gone, I had to get some wire so couldn't fix it then, What negative effects would this have on the engine, exhaust? Plan on fixing tomorrow.

 

I havent had this ground connected on any of my 3 maximas for years.

 

You mean the little strap? There was a thread on this a while ago... mine's been gone since I've had the car.

 

Ok guess I should not be too worried, what purpose does it serve? Thanks

 

Someone correct me if I am wrong, but in the previous thread, there were posts about it minutely affecting gas mileage. I believe that's it.

 

I found mine missing, and replaced it because my multimeter showed the y-pipe wasn't grounded well.

It made no difference I could see in fuel economy (although my fuel mileage is crap since my transmission bearings are bad)

Dave

 

where is the thread on an exhaust ground effecting gas mileage?

 

Why don't you search and find it?

 

Well thanks for the info I will look around