GreenDieselEngineering wrote:
They will most likely charge you $100 to read the codes unless you bring them a box of cookies or something. Try a few different scan tools if you can get access to others for free.
The Dealer will charge me $150 to diagnosis/scan the system for deeper codes, This is going to be my last resort. As of right now I have ordered a new Boost modulator & solenoid, Map sensor, just to cover my bases on the sensors possibly being responsible. Again this may be a shotgun approach but I want to be sure about them working correctly. The Map Sensor I'm only ordering just in the possibility I damaged it when I cleaned it. If this is me throwing money away due to the type of problem I'm having please let me know, I'm figuring it can't hurt replacing map for the $25 IDpart Charges.
Now I'm going to go over the fuel connections and get rid of all of the quick connectors and replace with the proper hose clamps and Fuel Lines. I will hold off on the lift pump for now, it can easily be added in the future if I need, unless you guys would suggest otherwise.
greiswig wrote:
Okay, from what you said in that one statement, it seemed like you were NOT getting air in the fuel filter all the time. That's why I was suggesting you look elsewhere. As for why all those other fixes didn't fix it, I guess I would have counted myself lucky if they had: that's the shotgun approach. Personally, I prefer to find what the problem really is, then specifically target it.
But I can definitely understand the frustration of not finding what the problem is easily.
I have had air in fuel issues, and I don't remember for sure but I don't think it threw a code about boost pressure. Only about fuel delivery. I didn't want to believe it was a turbocharger issue in my case, but for me the code was pointing me to exactly where the problem was.
As for the P0299 code, mine was
not throwing codes all the time, even though several of the vanes were stuck completely tight. I could see a little under 1/4" (5mm) movement in the actuator when vacuum was applied and removed, but that was just play in the actuator system. It was enough to make me think it was working okay until I actually saw how it was supposed to move (12+mm). But the vanes were not moving.
Why didn't it throw a code all the time? Probably because I'm a very consistent driver. I drive for mileage, and don't have a lead foot. So most of the time, the vanes were in a decent position to provide boost within the apparently wide range that the ECU found acceptable. But if I romped on it hard, it would overboost, and if I were in certain parts of the acceleration curve, it would underboost.
HTH,
greiswig,
I'm not convinced that this is a Fuel issue but I know to rule that out I definitely need to fix it. Also The actuator on the Turbo moves, I couldn't really measure it but it moved a good amount probably a half inch or more that would be over the 12mm like you said. I'll be pulling the intercooler to pressure test and going over all the vacuum lines in the next couple days to see if I can spot anything responsible as well. If the fixed air leak, no leaks in the vacuum lines, and new sensors do nothing, I will pull the turbo and verify if that is the culprit, I guess.
Please let me know if I'm missing something I should be checking that I'm not aware of.