TheProspector
Member
Sorry in advance for the long-winded post, but I need help on my BHW Passat with 245k miles.
I live in the foothills outside of Denver for about 4 months and climb about 1300ft in elevation in about 11 miles on my commute home. About 6 weeks ago my car went into limp mode and gave the p2099 code. I pulled over and found a vacuum line disconnected from the N75 valve. I reconnected the hose, cleared the code and the car ran fine for the rest of that night and the next day until the late afternoon when I was in a little of traffic and limp mode happened again. This time i was pouring white smoke out the back of the car. I pulled over and found that my turbo was broken. Over the next two weeks i changed the turbo(I cheaped out and ordered the cartridge to save money) which went well but I was still constantly getting the P0299 underboost code. So i changed the N75 valve which helped it go from a constant code to an intermittent one. Finally, I checked the adjustment of the actuator stop and rod and found out it was out of adjustment. After adjusting the stop, the car ran fine for about 3 weeks. I took in on a 12 hour round trip drive and had a overboost code once but that was it. Three days ago i started getting the p0299 underboost code anytime i even barely asked anything of the engine. To avoid the code, I was leaving the car in 4th gear to climb hills. Yesterday, trying to merge into traffic, the car lost power again and was pouring white smoke and ate a bunch of oil meaning the turbo probably died again. I found a chaffed wire that I think maybe my underboost issue but my question is if you guys think the underboost code is causing my turbos to break or is it just an unfortunate coincidence of an old part finally breaking along with maybe a ordering a bad part and that breaking? Thank you guys for any help. It's much appreciated.
I live in the foothills outside of Denver for about 4 months and climb about 1300ft in elevation in about 11 miles on my commute home. About 6 weeks ago my car went into limp mode and gave the p2099 code. I pulled over and found a vacuum line disconnected from the N75 valve. I reconnected the hose, cleared the code and the car ran fine for the rest of that night and the next day until the late afternoon when I was in a little of traffic and limp mode happened again. This time i was pouring white smoke out the back of the car. I pulled over and found that my turbo was broken. Over the next two weeks i changed the turbo(I cheaped out and ordered the cartridge to save money) which went well but I was still constantly getting the P0299 underboost code. So i changed the N75 valve which helped it go from a constant code to an intermittent one. Finally, I checked the adjustment of the actuator stop and rod and found out it was out of adjustment. After adjusting the stop, the car ran fine for about 3 weeks. I took in on a 12 hour round trip drive and had a overboost code once but that was it. Three days ago i started getting the p0299 underboost code anytime i even barely asked anything of the engine. To avoid the code, I was leaving the car in 4th gear to climb hills. Yesterday, trying to merge into traffic, the car lost power again and was pouring white smoke and ate a bunch of oil meaning the turbo probably died again. I found a chaffed wire that I think maybe my underboost issue but my question is if you guys think the underboost code is causing my turbos to break or is it just an unfortunate coincidence of an old part finally breaking along with maybe a ordering a bad part and that breaking? Thank you guys for any help. It's much appreciated.