320i under-perform recently.
- Thread starter DAN7788
- Start date
Re: 320i under-perform recently.
Hi,
am new in this. Got an 06 320i and was driving fine. A couple of weeks on, i realised that at times (maybe once per drive), my usual moderate light footing on the accelerator will cause the car to shudder during gear change (maybe from 2nd to 3rd or 3rd to 4th). Would like to qualify that I am on auto mode. The shudder would go away when I step harder on the accelerator. The shuddering feel is similar to how a manual car is about to stall when the accelerator wasn't stepped firmed enough.
I would thought that a moderate light but constant footing would accelerate the car smoothly as it progresses up the gears.
Has anyone faced such a problem before? Could it be due to the need for servicing, need for ATF change, some problem in fuel pressure or some problem with the gear box, or spark plugs? I can't seem to find out more from the internet and hence, would like to ask bros around in this forum. If I am not wrong, the last servicing was done about 16K kms ago.
Many thanks!
Hi,
am new in this. Got an 06 320i and was driving fine. A couple of weeks on, i realised that at times (maybe once per drive), my usual moderate light footing on the accelerator will cause the car to shudder during gear change (maybe from 2nd to 3rd or 3rd to 4th). Would like to qualify that I am on auto mode. The shudder would go away when I step harder on the accelerator. The shuddering feel is similar to how a manual car is about to stall when the accelerator wasn't stepped firmed enough.
I would thought that a moderate light but constant footing would accelerate the car smoothly as it progresses up the gears.
Has anyone faced such a problem before? Could it be due to the need for servicing, need for ATF change, some problem in fuel pressure or some problem with the gear box, or spark plugs? I can't seem to find out more from the internet and hence, would like to ask bros around in this forum. If I am not wrong, the last servicing was done about 16K kms ago.
Many thanks!
detach8
Well-Known Member
Re: 320i under-perform recently.
Sounds like your car is in the wrong gear and struggling to make torque?
My old 2006 Feb E90 didn't have this problem. My new 2011 E90 LCI had this problem and I figured it was the gearbox being more "eco" loves to shift up too early resulting in engine RPM below 1500. My old 2006 E90 maintained RPM near 2000 range most of the time and gave good torque. I switched to V-power and it went away. I will switch back to Esso 98 and try in the coming weeks.
pjlee25;660181 said:
Sounds like your car is in the wrong gear and struggling to make torque?
My old 2006 Feb E90 didn't have this problem. My new 2011 E90 LCI had this problem and I figured it was the gearbox being more "eco" loves to shift up too early resulting in engine RPM below 1500. My old 2006 E90 maintained RPM near 2000 range most of the time and gave good torque. I switched to V-power and it went away. I will switch back to Esso 98 and try in the coming weeks.
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Re: 320i under-perform recently.
Yeah... i like your description better. It's seems to be in a higher gear than it should!
The shuddering goes off by either stepping more on the accelerator OR just getting the foot off the pedal for that moment.
Hmm... I am using 95-grade petrol currently. Perhaps I will try the 98-grade and see if I face the same problem. I do hope that it is really the grade of petrol that is causing this problem.
detach8;660558 said:
Yeah... i like your description better. It's seems to be in a higher gear than it should!
The shuddering goes off by either stepping more on the accelerator OR just getting the foot off the pedal for that moment.
Hmm... I am using 95-grade petrol currently. Perhaps I will try the 98-grade and see if I face the same problem. I do hope that it is really the grade of petrol that is causing this problem.
Re: 320i under-perform recently.
I've yet to use up the full tank. The problem goes away when I am not using the automatic drive mode.
I tried the "Sports" mode. I noticed that the rev is higher, and the RPM was never dropped below 2000. The gear change was smooth and there was no jerking.
Back to the problem, as it happens only in the normal "drive" mode, the shuddering happens when the RPM is around 1300-1500. I guess it is a case of low RPM on a higher-than-required gear.
Now that it works well on the Sports mode, but not that well on the Drive mode. I would think that there is no problem with the petrol? plugs, plug cables, engine and gear box? I would like to hear that the problem is caused by dirty throttle body or maybe the reset of the ECU.
Correct me if my deduction is wrong, mates.
I've yet to use up the full tank. The problem goes away when I am not using the automatic drive mode.
I tried the "Sports" mode. I noticed that the rev is higher, and the RPM was never dropped below 2000. The gear change was smooth and there was no jerking.
Back to the problem, as it happens only in the normal "drive" mode, the shuddering happens when the RPM is around 1300-1500. I guess it is a case of low RPM on a higher-than-required gear.
Now that it works well on the Sports mode, but not that well on the Drive mode. I would think that there is no problem with the petrol? plugs, plug cables, engine and gear box? I would like to hear that the problem is caused by dirty throttle body or maybe the reset of the ECU.
Correct me if my deduction is wrong, mates.
Re: 320i under-perform recently.
Sorry to dig out an old thread but what you have described is exactly what I have been feeling when driving my 2009 E90 320... The gears always upshift too eagerly. This problem will go away every time the ecu is reset. And the problem will come back after the ecu becomes retarded again. After driving 150KM or so...
Have you found any solutions yet other than changing car...?
detach8;660558 said:
Sorry to dig out an old thread but what you have described is exactly what I have been feeling when driving my 2009 E90 320... The gears always upshift too eagerly. This problem will go away every time the ecu is reset. And the problem will come back after the ecu becomes retarded again. After driving 150KM or so...
Have you found any solutions yet other than changing car...?
