I turned onto reduce power then looked under truck

[slavy]

I turned on truck today and it said reduced engine. I look under truck and see this leaking.. anyone know what this is?

 

[Pure Diesel]

Looks like the fuel cooler.

Sent from my Pixel 6 Pro using Tapatalk

 

[slavy]

I turned on truck today and said reduced engine power. I look under the truck to see this leaking? Anybody know what it is?

 

[slavy]

Would this reduce the engine?

 

[2004LB7]

Very dirty fuel cooler

Reduce the engine?????

 

[Ron Nielson]

Fuel cooler on the return from the engine to the fuel tank

 

[JoshH]

That thing has been leaking for a while, but it shouldn't cause a check engine light or reduced power.

 

[slavy]

That thing has been leaking for a while, but it shouldn't cause a check engine light or reduced power.

What would cause it?

 

[1FastBrick]

No, Pull the Codes. What ever is causing the Reduced engine power should set a Check engine light.

 

[2004LB7]

There are a handful of reasons. We need the codes to begin guessing what it could be

 

[1FastBrick]

What would cause it?

An Electrical or Mechanical issue with the vehicle. Pull the codes and find out

 

[Chevy1925]

Make Model Year would be good as well. We cant read minds

 

[1FastBrick]

Make Model Year would be good as well. We cant read minds

You need a Magic 8 ball then...

If you want to be a skilled mechanic you will get a set of Diagnostic Dice.... Unfortunately they don't make them any more so they are hard to find. but if you google them you will see how great they are.

 

[TheBac]

Merged threads. Moved to LMM section.

 

[slavy]

It’s a 2009 duramax 3500. The codes are P0090
P2563 P0047

 

[slavy]

Make Model Year would be good as well. We cant read minds

09 Duramax 3500

 

[slavy]

There are a handful of reasons. We need the codes to begin guessing what it could be

P0090 p2563 p0047

 

[2004LB7]

I would guess one or more broken wires or bad connection. Maybe a short. I'd pull the connectors off the ecm and ohm the wires to the FPRV and turbo solenoid. Then check the voltage and ground to each of those

 

[slavy]

I would guess one or more broken wires or bad connection. Maybe a short. I'd pull the connectors off the ecm and ohm the wires to the FPRV and turbo solenoid. Then check the voltage and ground to each of those

I do wanna say I purchased this truck in November was waiting tiles spring to get it on road. I was turning it over during winter and clean exhaust filter came on. I think that’s the p2563. Everything was fine I had it running no problem two weeks ago and then today all of a sudden I’m in limp mode

 

[1FastBrick]

P2563 Turbo Boost Control Position Sensor Circuit
P0047 Turbo/Supercharger Boost Control A Circuit Low
P0090 Fuel Pressure Regulator 1 Control Circuit Open