Razzy530

Hello everyone.
I'd like some insight as to what could be happening with my 2007 530i 6 speed manual.
I started having this bucking to hesitation upon accelerating in any gear. I would floor it and the car would go nowhere. It's a sporadic issue and just started Wednesday June 13.
The car is now at park ave BMW being diagnosed. What the tech came back to me with is...... Need of reprogram DME/ECU since last software update was 2010. Also codes stored for thermostat being open 255 times, no check engine light ever. Also knock sensor and other minor things. All the time I had no check engine light for any of the above. He tested the fuel pump, came up good.
Any thoughts if these issues could be causing my starving for fuel acceleration problems?
Please share your thoughts

CaptH

My car would buck upon acceleration without any codes. Then I purposely floored it hard and the code showed up. It was a bad coil. I am not saying this is exactly your problem....but I just thought more info may help.

Razzy530

Thanks for your input. I got my car back today. New software and thermostat. We'll see what happens if anything.

AchtungE60

Could be:

Fuel
Plugs
Coil pack
Battery and/or IBS.
This is from a lot of experience dealign with my friends' e90 cars.
I've seen this issue SOOO many times with the same dealer excuses.


Unplug your IBS (box on top of your battery and try to drive) you'll get same type of issue. Their software update is BS excuse. THink about all the bimmers out there without software updates. The reason they give this excuse is to buy time and give an explanation open to interpretation because everytime they plug the car up to ISIS it will need to update your car anyway. I have a feeling these dealers cannot clear the info memory with the new isis setup without updating. I would like to see what the difference is since the last software of 2010 and 2012 besides a "fuel economy" sluggish DME update.

Obviously first check the cheaper things such as plugs/coils and definitely fuel. Rebooting the entire car may as well be the fix.

Razzy530

Ok, so to your point, my battery is still original. The car has just about 62K miles. The car also was just in the dealership for the batter cable recall. So far, the car is not showing any attitude, but then again, all the while the issue was sporadic. The fuel was tested at the dealer, found to be in good shape. (shell 93) The fuel pump was tested and it was fine as well. I hope that it was thermostat and/or software related.

Razzy530

This actually may be the problem now im having. The car has 150,000 miles and the coils are original. No codes. just random low rpm buckling. Should i have the coils replaced? Plugs have been replaced at 100K FYI

buddy

Been having b the same issue for years now, been in dealerships time in and again new coils, software upgrade, plugs, air filter, fuel filter, vanos tested good, 107000 on 2004. Only happens when ihit around 5k and up on rpm band im wondering if i need a crushed walnut cleaning at this point dont know where to turn at this point thinking of getting rid of car if cant be atleast diagnosed

seanjordan20

What model do you have thinking you need a walnut blast

NoQuarter

right... if it is the 530 he has listed in his signature then cleaning the intake valves is not a maintenance item.

NoQuarter

You won't be disappointed with new coils.