BMW diesel 老當益壯

ajuggrutaiwan wrote:
冷車啟動怠速不穩跟重油門反應慢半拍⋯會不會是「噴油嘴」的問題？

ai_0301 wrote:
換過 Radiator 後
原廠又做了 CO2 leak & 水壓測試,一切正常,打算下午交車到府了

ajuggrutaiwan wrote:
冷車啟動怠速不穩跟重油門反應慢半拍

altezzaclio wrote:
這樣的維修程度做什麼原廠,比外廠功力還差.

所以說高手在民間

1.Coolant low 亮燈需幾周的觀察
2.網路上同梯的車主心得 Feb 23, 2011
Hi everyone,
I have a 2007 535D (unfortunately out of warranty)
that had started to lose power at high revs (anything over 2K)
and gave no power on kick down (just sat at 3-4K revs and went nowhere).
os : 前幾周冷鋒來襲,小白本想去創紀錄,結果遇到類似狀況
No warning lights, no noises, no smoke, just no power. Lower revs are fine and it ticks over OK.
Computer just showed a loss of boost pressure, so no clues there.
無故障燈,無異響,無白煙,惟電腦有失壓紀錄
os : 平鎮廠印了一張 error log 供宅爸參考

After many false routes and red herrings we got to the bottom of it.
幾經瞎忙後,找到真因
It turns out that the bottom actuator has a much much higher spring rate than the other 2 actuators.
So mine, which was really hard to move and seemed like it held no vacuum was actually ok
BMW call these units pressure converters and there's 2 of them sat behind the
Vacuum tank.
Call to BWM and it seems this Pressure Converter was changed for another part in 08/2008.
Surprise, surprise... Guess the old one wasn't quite up to the job ?
2007/03 發表的LCI車型,2008/08 BMW 居然更新了新閥件 ......... 原廠心裡有鬼
Ordered a new one fitted it !
Result ....... Running great !
So if you have the same problem and you're out of warranty..
Before you give BMW ££££ for a new set of turbos check the following :
原廠建議更換貴森森的 Turbo 套件前,先檢查真空管線,壓力轉換閥
Vacuum Hoses, odds are they are shot, Pressure converters,
if you have 2 that look the same odds are one is dead.
Actuators, should move freely sprung, apart from the bottom one which needs a real
push to get it moving.

小白的情況晚了12年,該壞的還是會壞 .......
小白傳家的扭力,堪比 Model 3 performance 要找回來 !

ai_0301 wrote:
2.網路上同款的車主心得 Feb 23, 2011

altezzaclio wrote:
原廠不是把車還給你了...(恕刪)

原廠試車發現渦輪做動有異,一時沒答案

ai_0301 wrote:
技師試車發現小白水壓會偏高,何來的壓力 ?
氣缸床墊片可能仍有微變形,CO2 慢慢累積在副水箱,飆高水壓.
BMW 原廠終於承認錯誤了