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Alright, I am trying to troubleshoot a drivability issue on a stock 2013.
Low power, big time lag and fuel knock. I have followed the all-data directions and tested stuff but the pressure sensors have me hung up.
The exhaust pressure sensor does not match the other three but only by about 0.5 psi.
The other two differ by .1.
What is the acceptable range for these? Need help!!!!!
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Is this a tuned truck?
Nope, stock as can be.
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Any codes?
No codes.
Data logged and graphed the sensor and it showed some spikes but attributed that to the cylinders firing.
Exhaust brake was wonky the last time I drove it to.
Have not driven in over a week.
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Can you provide any log files or outline the data points for these PIDs
Rail Pressure
RPM
Boost Pressure
MAP
Injector Duty Cycle
Accelerator Pedal Position
Last time I drove it, the rail pressure was in spec at idle but lagged by at least 1000 while accelerating and over ran by more than that when I let off.
I am leaning toward a failing FCA or turbo but trying to do my due diligence.
The truck has 36000 on it while the short only has about 10000~12000 on it.
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I will get what I can later today.
Thanks guys for all the help.
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https://drive.google.com/file/d/1bMs...w?usp=drivesdk
Found my last data log. I also graphed some of the data and had converted the bar pressure readings to psi for the graphs while also graphing vs throttle position. I hope you guys can help. If not then i go to the dealer mode and start throwing parts.
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Line 60. You only made 18psi of boost at 75% throttle while your actual & commanded rail pressures were well within spec. So I'll ask the same question I asked in your other threads on this issue. Have you logged the VGT function of the turbo to determine if the vanes are moving?Originally Posted by cwendel
Did you ever address the U0059 CANBUS code?
5 Days Ago
Join DateMar 2018LocationjerseyPosts39Truck2013 Ram 2500 Bighorn - white
Local Date06-21-2019Local Time04:24 PM
Re: Turbo cleaning?Well, i am now leaning toward turbo issues. VGT works according to the sensors but there is not much boost. Well it makes boost but the lag is terrible. I found the exhaust boost sensor to read a psi higher than barometric pressure with the engine off. I pulled the sensor and found either fuel or oil on the sensor. Egr crossover has no oil on it, so i think the turbo is gone. No codes, still. Gotta pull the downpipe to check but i dont think fuel is in the exhaust.
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You stated here that you make boost but with terrible lag. This is indicative of poor/no VGT function. If you unplug the VGT actuator on the turbo, it will spool incredibly slow and not make full boost.
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