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01-24-2015, 08:10 PM | #1 |
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2015 550xi no power
started yesterday morning. My car literally feels like it has no power, almost as if the turbos are not spooling. I have a BMS tune on my car, I took it off earlier and unplugged the battery for 30 mins to let the ecu reset and its still happening. Any guesses??
Like I said, it literally feels like the turbos are not there. That slowly roll into the throttle at 3k rpm throw back in your seat feeling is not there. I even tried to launch it and it literally feel like I'm towing a boat. I know the "sport gauges" aren't accurate obviously but it barely reached 300hp and 400tq….. Theres no CEL's or codes…….. If it continues i'll bring it to the dealer monday… Car only has 3,700mi |
01-25-2015, 06:05 AM | #2 |
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do you have a exhaust?
IF so check the vacuum lines that open and close the butterfly in the back. That does it.
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01-25-2015, 09:20 AM | #3 |
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01-25-2015, 03:29 PM | #4 |
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Ive experienced this too. What I did was turn off car and then wait a couple minutes and turn back on and it solved my problem
Havent had that issue in awhile though I called it prius mode lol |
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01-25-2015, 04:25 PM | #5 | |
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my $80k car with 3700miles has drivetrain issues whatever guess thats the beauty of a warranty |
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01-25-2015, 04:56 PM | #6 | |
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01-25-2015, 05:28 PM | #7 | |
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Another weird thing I noticed which has me believing its turbo related, is the slight turbo whistle you hear on a cold start that fades away as the rpm's drop is no longer there…. Hopefully its something simple With the snow hitting NYC tomorrow I may not get it to the dealer till wednesday or thursday, but I will definitely report back on what they find. |
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01-25-2015, 11:17 PM | #8 |
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UPDATE !!
Well I'm in shock, but I fixed it myself. I can't leave anything alone and the dealer is the last place I wanted my car. I did a muffler delete on my car and left the 2 vacuum lines just tucked up, not plugged or zip tied. I read up on here and a few were saying the lines could pick up dirt and what not and mess with the boost actuator in the trunk on the left side under the covers…. Well long story short, I blew the lines out and make sure the actuator was clean, then plugged both lines and tucked them up and after driving up the block I knew it was fixed. Boost was finally back and the Malfunction light turned off after a mile. Its crazy that the car was fine for 2,700 miles without being plugged, but whatever theres miles of electronics and wiring on these cars… For anyone in the future experiencing this issue, CHECK THOSE LINES FIRST IF YOU HAVE AN AFTERMARKET EXHAUST!! |
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01-25-2015, 11:48 PM | #9 |
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Glad you got it fixed.
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01-27-2015, 11:48 AM | #10 |
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I told you. I guess I should if been more specific. If those vacuum lines are not closed properly you get that. Happend to me.
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01-28-2015, 11:59 AM | #11 |
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im about to do a muffler delete and replace with small race mufflers. I'm really glad I read this!!! what is the best way to plug these things up?
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02-11-2015, 02:41 AM | #12 |
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02-11-2015, 06:02 PM | #14 |
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I put a small screw that fit snugly in there for both. Works great!
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