The new floats in my gas tank were bad, but i got them done. Just takes a long time to get the tank open. I can tell you one story that's even worse.

The most common DTC (Diagnostic Trouble Code) to wreck your smog test will come from your upstream O2 sensors on your exhaust between the manifold and the CAT.

Usually very easy, I've replaced quite of few of my own and for other people. Mine aren't out, but they've tossed the codes occasionally (There are actually many theyi mght send) and I've tried to replace them on my Mustang --- But there's no room.

Hard enough climbing around over the car or jacking it up high ENOUGH to position yourself under there. But once you've wiggled the wrench around and onto the O2, the wrench is up against something and you can't twist it.

I've tried creative angles, nothing works. And a really short wrench has no leverage, especially at the odd reach you use to push on it.

Soon I'll need them replaced for real. Then what? I've found people saying they pulled the exhaust lines off to get to the O2. Dang, i can't even see where that is attached, it's tight. One guy with a YouTube video swears he got them off from inside but of course couldn't shoot video at the same time. Embarrassing to take what is SUPPOSED to be a simple job to the shop.

What's your worst?

 

Too many to list, of course I'm on engine #3 in my mustang......putting nitrous and a supercharger on a stock bottom end 302 is a bit hard on the engine apparently lol

 

I don't own one anymore. That last set-up was good until I sold it. It was a long ride before then.

 

Sounds like there are great horror stories waiting to be told.

 

Horror stories come with horsepower. The more we mod these cars, the more they tear up. Left alone, they are pretty tough cars. I just never could do that.

 

Yeah mine ran fine before I started ****ing with it lol. Amazing thing is I've pushed well over 500 pound-feet of torque through my stock t5 and it hasn't grenaded yet (closer to 600 when I had my nitrous)

 

I guess things you add can make it harder to reach other things. But mine came from the factory that way.

 

Mine ran pretty well from the factory, mind you I only owned it for a few months before I started messing with it. And the engines blowing up were just from over powering what it could handle, I knew I was playing with fire when I did the modifications. That's why I finally broke down and bought a built engine with an aftermarket block......then proceeded to attach it to my stock trans lol.