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Hello everyone,
My GL320 2009 Bluetec has a big problem - can not accelerate. Sure it can.... from 0 mile to 30 mile, use 3 mins.
Things like this (time line..):
1, Five months ago, it got the famous "limp mode". When I climbed the bridge or up hill, the turbo looked like some problem. The rpm was limited to 2200, and the speed from 60 to 75 MPH will cost 3 mins. The faulty code showed turbo charge under boost, intake motor and intake port position problems.
2. In my garage, I took out the turbo out and check. The intake motor is broken. Then I changed a new one (bought from ebay, US local). I also did the carbon cleaning of the intake port and manifold at same time. But the result is still same - limp mode, cannot accelerate well, cannot climb "any uphill". The faulty code also showed intake port position problem, and two new things - soot of DPF is too high, the positive control deviation is too high.
3. I thought about the sensors problem. Then I changed the differential pressure, exhaust back, two intake MAP sensors. But the problem worsen now. Previously the car still can run in low speed, like from 0 to 40 MPH is normal. Now, it is very hardly accelerate from 0-20 MPH! A horrible buzz sound (like air pass a throttle sound) from the EGR valve, and louder accompany the pedal press deeper.
There are 5 codes now, shows below. But no one is about the EGR.
Is the EGR broken now? Help me! I am almost crying...already half a year....
.... when was the last time you replaced your fuel filter?
Thank you for the reply.
I changed the diesel filter about 5 months ago (along with the oil and air filters). But the car stayed in the garage most of time during the 5 months...
I can only use my weekends for repairing.... so twice repairing used a long time...
In my case 'no boost' resulted from a broken connection from the compressor to the charge air system. Acceleration just about went away! Have you checked to be sure the air pipes are all intact and properly attached downstream of the compressor?
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GL320 Bluetec CANNOT Accelerate!
