Since I've purchased my VX I have had an EGR code. It randomly clears, and comes back on its own. Until now, I haven't had any REAL issues.

My last tank I got just over 10MPG(before I would get 15 - 17), and in the morning, when my truck is cold, it tends to blow some black smoke when even a mild amount of gas is applied. (more than normal, I think I may have original spark plugs)

Then, just 2 days ago I started to hear a loud beeping sound under the hood. It only happens at MAX vacuum, when the engine is breaking, or in Park, or Neutral.

When in park or neutral I get LOW and shuttering RPM's, but when I'm in drive, It idles perfect.

Intake gaskets?, I am going to use propane with a hose to see if I can get it to do anything, but man, I'm a little worried! I have just over 110k miles.

Anyone here experience this?