To give you an idea, I got the history of the vehicle recently and... ALL the wiring were oxidated (oxyded) sp? RUST. So they changed them all with some from a crashed G35 but the wiring was not done perfectly. They guess the car was sold to the previous owner and he had many problems which were caused by the seller (first seller, I'm the 3rd owner) not saying the car was flooded or something...

Oh well, I'm trying to keep it working for now! It's my winter car, so cheap fixes are best for me right now.

One of my cat was clogged probably due to high mileage of the car, and when the seafoam was done, it didn't help and caused the o2 sensors to fail (my guess).

I even asked the shop to change my o2 sensors (that are causing check engine) and they told me that the wiring that had been done was not right, too many wires not supposed to be there. That's kind of weird if you ask me.

 

Sell it.

You'll have nothing but recurring catastrophic issues iwth this car. Get rid of it ASAP.

FYI: Cats do not clog with age, ever. If a Cat fails, it's because of improper engine management or worn engine components, ie. Overfuelling, excessive blowby, etc, etc.

A properly functioning Engine will NEVER mess up a Cat. Cat's are not a maintenance item.

 

^^This. Get out from under that disaster and look for another G. This car will continue to break your heart.