Detroit 60 series 12.7L Egr problems

**BAYOU HOTSHOT** · 05.22.2012

I have ask been asking about this for sometimes and now my ddec 5 is down I can no longer pull loads with it and not one shop can give me a answer on the dyno today the the truck starts making 32lbs of boost than turbo will cheerp and boost drops down to 20lbs than while doing that it rolls black smoke than Egr temp was over 600 degrees the fan comes on and stays on until you take your foot out of it we have changed the inter cooler with new boots new clamps Egr cooler Egr valve v pod turbo run a over head and reflased the ECM I have spent over $6,000 on it now with no fix
Can someone help me out I can not be the only person that has had this problem

**blanco** · 05.23.2012

Best bet would be to put on dyno and pull codes as the faults occur

**BAYOU HOTSHOT** · 05.23.2012

Originally Posted by BAYOU HOTSHOT

I have ask been asking about this for sometimes and now my ddec 5 is down I can no longer pull loads with it and not one shop can give me a answer on the dyno today the the truck starts making 32lbs of boost than turbo will cheerp and boost drops down to 20lbs than while doing that it rolls black smoke than Egr temp was over 600 degrees the fan comes on and stays on until you take your foot out of it we have changed the inter cooler with new boots new clamps Egr cooler Egr valve v pod turbo run a over head and reflased the ECM I have spent over $6,000 on it now with no fix
Can someone help me out I can not be the only person that has had this problem

read it again!!!

**freightlinerman** · 05.23.2012

I guess its a process of elimination. What causes the vanes to open/close to regulate the boost on the turbo? What are the requirements for the EGR valve to open and close? Research and find out what and why. What causes the fan to turn on besides the A/C and hot coolant?

It's a cause and effect, it sound's like they are just throwing parts at it. You should try to find a manual and read up on the stuff mentioned above. If you can, compare a snap shot of your truck's ECM while running to ANOTHER indentical truck or truck with the same engine. For exmaple, if your truck shows the ambient temp is 20 degrees, and the other truck next to you is showing 96 degrees, that could be your issue. That's just an analogy, you have to find the symptoms to make the diagnosis.

**BAYOU HOTSHOT** · 05.23.2012

We are doing the ECM swop tomorrow

**freightlinerman** · 05.23.2012

I hope that fixes it, but it will suck after replacing all those parts and spending that $. What shop(S) did you take it to anyway?

**3rd Gen Driver** · 05.23.2012

What's the 20 on your truck?

**BAYOU HOTSHOT** · 05.24.2012

It's at Stewart and stevens in Houston,tx now my local guy has worked on it a few times and it's over his head than off to Freightliner that was the biggest wast now I'm at shop number 3. I'm at ECM king in santa fa,tx they are looking at the ecm now