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E60 / E61 (2004 - 2010)
BMW 5-Series E60 Sedan was first seen in the Unites States in the fall of 2003 with a 2004 Model Year designation. The E61 wagon followed shortly there after. The E60/E61 5 series is now available as a 528i, 528xi, 535i, 535xi, 550i and a 535xi sports wagon! -- View the E60 Wiki

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  #26  
Old 09-09-2019, 12:42 AM
rowanta rowanta is offline
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Simple things are usually overlooked. Have you checked the spark plug gap? I would start there

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  #27  
Old 09-09-2019, 05:49 AM
audiophool audiophool is offline
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Yours launches in 2nd when running in D? Mine starts in 1st whether in D or DS, and if I put it in M it auto-sets to 2nd at every stop. Frankly, I've found the car is faster 0-100 launching in 2nd in M, and upshifting at 5000 than it is when floored and run to redline in either D or DS. Laggy throttle response during 'roll' is more an issue than at 'launch' when in D, DS is fine.
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  #28  
Old 09-09-2019, 07:01 AM
jeeper1974 jeeper1974 is offline
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I'm going to look at logging this week. I don't know if Carly or one of the BMW tools I have has the option to record multiple variables so I can plot against each other. If not, then I'll need to get another program.
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  #29  
Old 09-09-2019, 10:11 PM
jeeper1974 jeeper1974 is offline
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This morning I was able to get Carly connected and logged some data. I logged data from the accelerator pedal sensor potentiometer, Throttle Valve Angle, and Throttle setpoint. Attached is the plotted data along with the raw data. A delay is seen between accelerator position and throttle valve but no delay between Throttle setpoint and Current Throttle angle. This says to me that throttle valve is following the setpoint that the ECU tells it to go to. It is the ECU that is slow to respond to the accelerator position. Tomorrow I'll log the engine RPM in relation to the throttle position just for kicks. Any other parameters I should look at?
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  #30  
Old 09-11-2019, 12:36 PM
pshovest pshovest is offline
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Yep, sure looks sluggish. I wonder if the throttle body is gummed up. I'd thoroughly clean the throttle body with carb cleaner, particularly where the throttle shaft passes thru the body.
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  #31  
Old 09-11-2019, 01:51 PM
jeeper1974 jeeper1974 is offline
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I would lean toward the throttle body except that in the data it shows the throttle position following the throttle setpoint. This means that the throttle body is following, almost exactly, the position that the ECU tells it. For some reason the ECU wants the acceleration to be slow.
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  #32  
Old 09-11-2019, 08:13 PM
jim165 jim165 is offline
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Quote:
Originally Posted by jeeper1974 View Post
I looked at 10-20 different posts talking about this issue without any working resolutions. Maybe a new post will generate something I haven't tried.

I have a 2010 BMW 535i(E60) with 131K miles that has about a 1-2 second response delay between pressing the accelerator pedal and engine responding. This is most noticeable when moving from a complete stop. The pedal is pressed....1 second ...2 second ... lift off. I've got used to it enough so I just press the pedal a little until it starts moving so I'm not launching off the stop every time, but for any car this seems like a safety issue. The engine does not rev up. It just appears to be sleeping until 1-2 seconds pass. Is this normal?

I've tried the transmission adaptation reset. No effect
I've reset the throttle body. No effect.
I've reflashed the transmission module and engine module with the latest SP-DATEN files. No effect.
It has a new fuel filter. No effect.
No codes are present.

My 2008 X5 had a similar throttle lag issue until I burned up the ECU and got a new one installed (Long story!) but I thought its fix was related to the new program on the ECU. Re-programming my E60 has not solved it.

Looking through the forums it looks like this is a common issue. Some say get an aftermarket accelerator pedal sensor, others say reset the transmission, some say its a cam sensor, a Vanos seal leak, an O2 sensor, the MAP sensor, the Mass air flow sensor, and some say its normal turbo lag. I don't know what direction to look now.

I'm all for fixing the problem if it is a problem and not a character of BMWs. Do BMWs commonly have very poor throttle response times? If not, what is the first thing I should replace to fix this issue? Right now it looks like a random part replacement approach is my next option to try and fix this issue. Thanks. Roger
131K miles...have you had your intake valves cleaned ever? Engine probably can't breathe...
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  #33  
Old 09-12-2019, 10:38 AM
pshovest pshovest is offline
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Quote:
Originally Posted by jeeper1974 View Post
I would lean toward the throttle body except that in the data it shows the throttle position following the throttle setpoint. This means that the throttle body is following, almost exactly, the position that the ECU tells it. For some reason the ECU wants the acceleration to be slow.
Maybe, but if the DME has adapted to the slow responding throttle body, it would perform like this also.
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acceleration hesitation, acceleration holds back, engine response


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