loss of power and black smoke with cruise control

[loopygroup]

I am posting for a friend whose truck is sitting in my drive.
It is a 2006 with 127K. when he is using the cruise control after about 20 miles or so it will start to lose power and blow black smoke out of the exhaust.
If he disables the cruise and floors it it bucks then clears out and will run fine.
has anyone else had this problem? could it possibly be the ICP sensor? He is afraid to drive it for fear of getting stranded as he lives 70 miles away.

[loopygroup]

found the problem. was a bad selonoid

[kbhueydoc]

Originally Posted by loopygroup

found the problem. was a bad selonoid

Can you tell me what solenoid it was? My truck is doing exactly the same thing. It also occasionally stumbles when taking off from a stop. That's followed by a good cloud of black smoke. I keep hearing that I need to replace or clean the EGR valve.

[loopygroup]

sorry maybe solenoid wasn't the right word. it was actually the actuator on the turbo.
before you spend the money on one I suggest you make sure the vanes aren't carbon fouled. there is a tech file i've seen on this site for cleaning the turbo.
if the EGR valve is plugged it can cause the same type of problems so you may want to investigate that as well.

[kbhueydoc]

Hey, thanks for the advice. I'll check out that thread and get a good look at my turbo. After reading through hours of posts on here I'm pretty much sold on replacing the EGR. Now I just have to decide between a delete or EGR/cooler replacement. Thanks again.

[STUPAGE]

Delete the EGR, or spend the money and buy the Bulletproof. Otherwise you are looking at replacing the oil cooler soon, and the cycle starts again - EGR cooler, oil cooler....and that's if it doesn't cause a major engine failure when either part fails again, and it will. If you delete the EGR, the turbo will stop building carbon on the variable vane side, this is partly due to the EGR valve getting "carboned" up and staying partly open all the time, and leaking unburnt fuel/exhaust.

[kbhueydoc]

Awesome, thanks. I think I'm headed down the right road now. We'll see. I've got a MKM EGR/cooler delete on the way which I should have by the end of the week. That does bring up another question though. Do I need to or should I replace the oil cooler as well or will this delete cover it? I'm no pro but it doesn't seem like I have an issue with the oil cooler at this time. I know I need to get gauges......gotta save up the $$$