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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E34 (1989 - 1995)

E34 (1989 - 1995)

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  #1  
Old 05-08-2013, 01:56 PM
reza338 reza338 is offline
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Mein Auto: 535i E34
low acceleration at low rpm

dear friends my car has a problem exactly the same as a below youtube url that i found it at you tube? what is the problem?

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  #2  
Old 05-08-2013, 10:48 PM
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Bimmerfan84 Bimmerfan84 is offline
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Well if you read the posts the guy found cracks in his distributor cap. He replaced it and everything was fine.
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  #3  
Old 05-08-2013, 10:48 PM
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Bimmerfan84 Bimmerfan84 is offline
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The posts in the video that is
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  #4  
Old 05-09-2013, 04:03 AM
reza338 reza338 is offline
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low acceleration

i changed my distributor cap but the problem is still remained
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  #5  
Old 05-09-2013, 07:57 AM
reza338 reza338 is offline
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low acceleration at low rpm

Dear

i checked my air flow sensor based on attached file user manual ( air flow sensor checking M20/M30 ) the resistance between pin 2 & 3 changes steadily but from 500 ohm at full close rise to 900 ohm at 60-70 % of maximum movement of flap and again falls to 500 ohm with increasing of flap from 70 % to full open, is it logical? i think the resistance must be rise linear instead of sinus changing
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File Type: pdf DME 1.3.pdf (212.7 KB, 33 views)
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  #6  
Old 05-13-2013, 01:39 AM
paperplane94 paperplane94 is offline
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If you want to test your AFM you need to apply voltage to it as shown here:
http://www.iprimus.ca/~trauttf/temp/AFM/


You should look into the other possibilities of what is causing your rough running problem as well.
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  #7  
Old 05-13-2013, 04:49 PM
reza338 reza338 is offline
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thank you very much for your guide & useful link
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  #8  
Old 05-13-2013, 08:34 PM
PlasmaE34 PlasmaE34 is offline
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Quote:
Originally Posted by paperplane94 View Post
If you want to test your AFM you need to apply voltage to it as shown here:
http://www.iprimus.ca/~trauttf/temp/AFM/


You should look into the other possibilities of what is causing your rough running problem as well.
Paperplane 94, that's the best link on the old AFM and its design I've seen. And I have searched before.

I've seen your other links too. You are truly a sleuth I must say.

You probably have accumulated a long list of *good* links on potentially relevant topics. There's a talent/luck combo involved in this and you certainly have it. Would you mind starting a thread and posting all the good links that you've found over the years ? Kinda like a glossary. I think it would be a good archival thread and would be useful just to read through for knowledge. The thread would be referenced by yourself and other posters as situations come up.
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  #9  
Old 05-14-2013, 01:31 AM
paperplane94 paperplane94 is offline
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Good idea, maybe in the future if I don't have too much work .
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  #10  
Old 05-14-2013, 06:22 AM
snowsled7 snowsled7 is offline
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Quote:
Originally Posted by PlasmaE34 View Post
Paperplane 94, that's the best link on the old AFM and its design I've seen. And I have searched before.

I've seen your other links too. You are truly a sleuth I must say.

You probably have accumulated a long list of *good* links on potentially relevant topics. There's a talent/luck combo involved in this and you certainly have it. Would you mind starting a thread and posting all the good links that you've found over the years ? Kinda like a glossary. I think it would be a good archival thread and would be useful just to read through for knowledge. The thread would be referenced by yourself and other posters as situations come up.


There are already two stickied threads about problems and maintenance. If you see something that is too good to pass up you should contact the moderators and ask them if they will add it to the existing stickied topics

Back for another round already bobby?
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