Loss of rpm above 3000

[mas]

Something new, it has happened twice in the past week, while going through the gears, the acceleration seems to slow down once it hits 3000 rpm.  At slow speeds, I can hear the turbo in the background.  So far twice, both times the next time I drove, the engine when through the gears normally.  What gives?

[Nigel]

Sounds like the car went into limp mode but it doesn’t always set a check engine light. When it happens if you can easily pull over, stop and shut engine off for about twenty seconds you will hear a click from the Sam by your knees then you are good to go until it happens again.  When mine goes into limp it’s all I can do to maintain highway speed on the flats.  You need to scan for codes to see what is happening.

 

Nigel

[smart142]

After the click wait for at least 5 seconds to reset the computer.

More often than not a malfunctioning EGR is the cause of the problem.

[mas]

would poor fuel mileage be associated with this situation?

[mas]

Since it looks like I am going down the EGR road, research has led me to installing an egr blocking plate and/or removing the solenoid and turning the cartridge 180 degrees.  

My question is, which one do I do?  No CEL on the dash but at times the car goes into limp mode (is it just a matter of time?) If I go blanking plate, would I still remove the EGR valve and give it a clean? And since I am there, do the 180 thing and not bother with the blanking plate. Is one easier than the other or is it the case of 'since I am already up to my elbows may as well..."