bvlenci Posted June 17, 2023 Share Posted June 17, 2023 Hi All. I'm new here, so if anybody can assist, that would be great. have an M47 engine in a BMW 120d. It has the EGR, Swirl flaps, and 02 sensor engine management lights on. The solinode that controls the hoover egr was not holding hoover, so it was changed. The hoover egr has been cleaned out. No better still. Swirl flaps on the removed intake manifold were checked, and they all moved without any issues. It has through a solenoid test, holds hoover and functions as it should. Also passing inspection was the flap actuator. cleaned map and Maf sensors. There were no boost leaks found despite a search. The car handles OK, but the turbo seems lifeless and has no genuine power. Please assist. Quote Link to comment Share on other sites More sharing options...
Mistral Posted June 17, 2023 Share Posted June 17, 2023 Have you replaced all of the hoover pipes? You seem to have a split in one or two of them. Quote Link to comment Share on other sites More sharing options...
BEERMAN Posted June 17, 2023 Share Posted June 17, 2023 Additionally, as @Mistral mentioned, ensure that the pipelines, if they are in excellent condition, are installed correctly. Quote Link to comment Share on other sites More sharing options...
bvlenci Posted June 17, 2023 Author Share Posted June 17, 2023 2 minutes ago, Mistral said: Have you replaced all of the hoover pipes? You seem to have a split in one or two of them. Thank you for your advice, buddy. I did take a quick look at the vacuum pipes I worked on, but I didn't make any changes. Quote Link to comment Share on other sites More sharing options...
QuirkEinstein Posted June 17, 2023 Share Posted June 17, 2023 In my experience, the turbo is usually the first to go. It's probably best to change them all at once, but do it cautiously so you don't confuse them. Quote Link to comment Share on other sites More sharing options...
WordSmith Posted June 17, 2023 Share Posted June 17, 2023 Simply cleaning the maf and map sensors does not guarantee that they are in good working order. Quote Link to comment Share on other sites More sharing options...
bvlenci Posted June 17, 2023 Author Share Posted June 17, 2023 Cleaning maf and map sensors does not imply that they are functional. Quote Link to comment Share on other sites More sharing options...
bvlenci Posted June 17, 2023 Author Share Posted June 17, 2023 Poster123 7 minutes ago, BEERMAN said: Additionally, as @Mistral mentioned, ensure that the pipelines, if they are in excellent condition, are installed correctly. Thank you buddy. They must be in the right place because the car was driving fine before, but there could be a split somewhere. Is it enough to just look at something? Quote Link to comment Share on other sites More sharing options...
BEERMAN Posted June 17, 2023 Share Posted June 17, 2023 1 minute ago, bvlenci said: Poster123 Thank you buddy. They must be in the right place because the car was driving fine before, but there could be a split somewhere. Is it enough to just look at something? No, many pipes only break under pressure; otherwise, they may seem perfectly good. I used to pull them off, securely seal one end with my finger, then place the other end on my compressor with an airbed (tapered) fitting for a second... They should be OK if they hold enough to make your finger come free... Quote Link to comment Share on other sites More sharing options...
Mistral Posted June 17, 2023 Share Posted June 17, 2023 If I'm not sure, I just change them for what it costs. Quote Link to comment Share on other sites More sharing options...
CheresX Posted June 17, 2023 Share Posted June 17, 2023 25 minutes ago, bvlenci said: Hi All. I'm new here, so if anybody can assist, that would be great. have an M47 engine in a BMW 120d. It has the EGR, Swirl flaps, and 02 sensor engine management lights on. The solinode that controls the hoover egr was not holding hoover, so it was changed. The hoover egr has been cleaned out. No better still. Swirl flaps on the removed intake manifold were checked, and they all moved without any issues. It has through a solenoid test, holds hoover and functions as it should. Also passing inspection was the flap actuator. cleaned map and Maf sensors. There were no boost leaks found despite a search. The car handles OK, but the turbo seems lifeless and has no genuine power. Please assist. How are you? On my N47, I did pretty much the same thing as you, except I changed the vac hoses and got rid of the swirl flaps. I ended up with the same problem as you, even though the car ran fine before. It turned out to be the map sensor, if that's the one at the back of the outlet. Maybe they don't like to be cleaned. Quote Link to comment Share on other sites More sharing options...
Auto Car Forum For Everybody
Auto Car Forum For Everybody
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.