With recent problems we are having with our truck we have been brainstorming and are wondering if anyone out there has a mod for that electronic actuator? It only has two wires so it has to be on or off. We want it to be on all the time. Anyone?

 

No, no. It isn't an "on/off" style actuator, it is duty cycle controlled proportional to current provided by the PCM. Shorting it to ground with a switch will simply throw it to 100% DC (fully closed turbo vanes), at which the boost would spike sharply and quickly destroy the turbo from overspeed, and choke the motor from excessive backpressure.

The only effective way to control it is to install a linear (not logarithmic) rheostat with the correct resistance levels to control the current to the actuator, but as quickly as it is normally modulated under low RPM conditions, you would never physically be able to keep up. It would only be used at constant WOT, and even at that you would be constantly playing with the setting to obtain correct boost. If you are so minded, the PCM can be calibrated to control it exactly as you wish- without having to mess with external controls.

 

Please share this information. We cannot find a dealer tech that will actually listen to our problems, incurring frustration and loss of hair. Are there actually techs out there that can reprogram the computer? This is happening in conjunction with the backpressure butterfly and the truck will almost never get out of its own way.

 

There is no "backpressure" butterfly valve on the 6.0 as there was on the 7.3. Excessive backpressure is caused by the control vanes of the turbocharger becoming stuck.

The dealer will only be able to provide a stock calibration. However, the newest calibration should not cause these problems if the hardware of the turbocharger is functioning properly.

 

Just curious, but what was your actual intent with performing this modification?

I'm not quite sure I understood your motive for wanting manual control of the vanes.

 

This sounds like some of the same problems I experience from time to time, seems like the turbo winds up or over speeds and have a lot of turbo fart. Then there are times it performs to the max. One dealer I spoke with said there was nothing wrong with my turbo, the next dealer I spoke with said I should stomp my feet until the turbo gets replaced....Hmmmm

 

While driving down the road the truck goes into severe power loss and dumps black smoke. You can hear the turbo but it creates a noise similiar as if the backpressure valve during cold start was on. The truck had been running for an hour down the highway. We just pulled over and unplugged it and then replugged it in thinkin it may have come loose. Happens every now and then. Just pull over and reset it.
Also, this truck will not pull out of a driveway or intersection if cold. We actually have to go down the street and turn around.

 

I think this thread needs more attention if others are rebuilding turbos and is it because of the computer or the sensor?

 

Sounds like your egr valve is sticking open!

 

egr disconnected along time ago

 

kennedyford,

The symptoms you have noted can be caused by a few different things. I had this problem two different times with my 04 PSD. It was caused by a faulty EBP sensor and a bad connector/wiring. There were a couple of TSB's that addressed this problem. In July Ford did the wiring bundle customer service upgrade and then in September did the EBP sensor and connector customer service upgrade. Also Ford had a new program out for the PCM when the EBP sensor and connector was changed in September to address some of the driving problems you are having. A bad EBP sensor that is failing intermittantly will cause the problems you are having.

I would also suggest that when your truck has this problem to take it to the repair facility without pulling over and disconnecting/re-conncting anything under the hood. Leave it in the condition that it failed so that the service tech can better diagnose the problem. Also make sure you are taking it to a "Qualified" 6.0 PSD service tech with lots of experience with this motor. I see you live in the Phoenix area, Sanderson Ford probably has the most experienced Ford diesel techs in this area, as they have been the leading Ford light, medium and heavy duty diesel dealer for over 40 years in the valley. There main facility is in Glendale but they also have a Lincoln/Mercury dealership in the North valley on Bell road that has a "Qualified" 6.0PSD diesel tech if you don't want to drive as far.

Also read the thread in the "Tech folder" at the top of this forum under driveability problems. It addresses this very issue.

Hope this helps

 

Mine is doing the same thing when the engine is physically cold like anything below 55-60 F, gets worse the colder it gets. It has been in twice and no codes.

I talked to a International dealer, and they said they have seen those symptoms many times when a Cam Position Sensor is bad. They told me that is the only sensor that will not throw a code.

I am going to replace that sensor myself in the next couple of weeks sometime and I will post the results.

 

We can disconnect EVERY single connector on the engine and the check light will not come on. hmmmmm..Oh and recall fixed a little bit of the problems but I think turbo is done.....

 

Just because the check engine light doesn't come on doesn't mean it doesn't have a code stored in the computer.

 

No codes have ever come up. Light has never come on