Hello my name is XXXXX XXXXX I will try to help you. The codes you report are all over the place:
46 – ECM battery low voltage
77 - Anything from turbo boost high to oil pressure high
72 - Vehicle over speed
63 – PMW issue
44 - Coolant, oil or intake temp high
34 -Turbo boost sensor intake voltage pressure low
21- TPS input voltage high
47- Turbo boost or air inlet pressure high
49- Turbo compressor out pressure high
51- Turbo compressor out temp high
31- aux output short to ground
Without PID, SID or FMI codes I cannot be more specific. But I do think it's something electrical like a bad ground, loose connector or possible bad ECM.
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what are the pid, sid, fmi codes?
The are a more detailed codes that can only be retrieved with a reader. They give a more specific reason for the flash . They would give a detailed for the codes I gave you multiple causes.
can you refer me to another expert please, thanks
Hi, Welcome to Just Answer, I am Clayton. I can help you with this.
The fact that the turbo is making noise is leading me to a turbo, I know it is 2yrs old, but the actuator on the turbo controls your boost, you should NEVER see 50psi under a load, also, if you are revving the engine with it unloaded, and you boost more than 14psi, than the VNT veins are sticking.
There are a few checks that need to be done. But I am 99 percent sure your turbo is bad.
You need to pressure check the charge air cooler, block one side, pressure it up to around 25-30 psi, and see how much it leaks down, should not leak no more than 5 psi in 1 minute. If your charge air cooler is silver, it is most likely going to leak. The silver charge air coolers were bad around leaking around the seam. I have changed LOTS. If yours is BLACK, they are less prone.
Next is the VNT actuator. This controls the boost. These leak, but usually if they are bad enough, you can hear it, and it won't build much boost. If the Veins stick closed, the boost will be uncontrollable, and the engine will DERATE and throw THESE faults.
You can check to see if the Veins are sticking by removing the pin on the actuator that connects the linkage. The linkage is on the exhaust side of the turbo, it moves up and down with the actuator. If you see black soot around the shaft, if you can move it in and out.
39- VNT Veins not respond ( unknown FMI )
What is bad about high mileage EGR Detroits is when they rack up the miles, the EGR components start going out. When you replace one EGR component, you are back in the shop replacing something else. When I get one in the shop that has symptoms like yours, I check everything that will fail. This usually leads to a very high bill. Parts prices are about like this.
EGR Valve- $900
Charge air Cooler- $800
I hope this is a better answer, and I have more information if needed.
Well, the restriction guage should go up if there is a restriction in the intake due to a dirty air filter, but you said you changed it.
make sure your boost guage is not mechanical, if it is, a boost sensor may not help you.
I would put a manual guage on it to see what your ACTUAL boost is.
Poor fuel mileage could be leaking charge air cooler, hoses, intake manifold gaskets, egr hoses, fuel leak, problem in the EGR system, bad injector or injectors(typically causes a miss)
I would have them pressure check the entire system, and not block off the charge air cooler. Just pressure it up to around 30 psi and start spraying connections with soap solution. Then block off the other side of the charge air cooler, and pressure it up and see if it holds.
My prediction is if it throws a fault code, it will be fault code 39