Low turbo boost psi after overhaul - cat c15 2006

Are you actually hooking up a laptop or computer to see any codes or not just seeing them on the dash?

 

Get it to the dealer or someone who has the right software and have an ecm dump done plus maybe take the truck out for a live check and record the readings to see where the problem is

 

Check piping elbow oring , coming off your intercooler. And make sure flange is clean from corrosion. And oring is lubricated with non patrolium based lubricant.

 

Did you perform this overhaul yourself or did you have a shop do it? If a shop did are they going to help you replace the turbos? It is very possible that something got sucked in and dusted both turbos. Glad you got it figured out and thanks for coming back on here with a update.

 

I had the same problem and its plain and simple everyone always looks at the most complicated way to fix anything look at the easy fix first on the side of the engine of the driver side towards the back on the head straight up from your ecm you'll see an airline or a steel hose that runs into your firewall that's your gauge line take the line off at the head you will see an insert that will have a small pin hole in it clean with soap water and take your blowgun rubber tip off an fill the gun with soap water and put the tip back on and hold it tightly against the insert and give her hell and if you see the soap water blow through good then it's clean and not plugged put everything back together and see what she does oh and have someone watch your gauge as you take the blowgun and blow into the line to see if your gauge will max out if it does your good to go

 

So would a single turbo effect warranty? Being the shop did not find bad turbos during rebuild? Was it a CAT certified shop?