my vehicle has black inside the pipe tips. It passed california ENHANCED smog tests. If it were running rich, it would not have passed.

All tips are like that on heavy V8s with a lot of cubes (I mean a lot as compared to other vehicles on the road).

Every engine pushes unburned fuel out of the cylinders. The more cylinders, the more unburned fuel.

 

I take back what I said earlier, electric cars will not have black in there pipes....if they even have a tailpipe

 

LOL, 100% electric cars wouldn't, but it stands to reason that the hybrids of today would have the black residue..... they use a 4-cycle 3 cylinder engine for power at... uh, 35+ I believe, and to recharge the batteries when they get low.

 

When I put my headers on the pipes were white all the way to cat. I thought something was wrong with my truck. My Gpa said back in the day you knew it was running good when the pipes were white. You can't even wipe black soot out my tips they stay so clean.

 

Changed the coolant temp sensor an it still reads high circuit

 

Did you disconnect the battery to reset the PCM?

Might wanna start looking at the wiring, see if there is a short.

 

Yea I disconnected the battery an started lookin at the wiring afterwards the connector is suppose to clip in right? An mine kinda jus slides in an doesn't clip and It comes right off

 

You're gonna need a new pigtail then. It's supposed to clip onto the sensor.

 

Is it gonna be a dealer item cause I was at orielly auto parts an we couldn't seem to find one that matched

 

Go to a junkyard... the dealer will charge 5x what it's worth.