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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 06-29-2011, 08:36 AM
1992jorge525 1992jorge525 is offline
'92 BMW 525i
Location: Frankfurt, Germany
 
Join Date: Jan 2011
Posts: 231
Mein Auto: 1992 BMW 525i
Erratic idle

Just like tittle says... Erratic idle... Any ideas? Little vibration when pressing on gas...

Anything will help.

Jorge
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  #2  
Old 06-29-2011, 04:09 PM
BMR_LVR's Avatar
BMR_LVR BMR_LVR is offline
Humble E34 lover
Location: Asheboro, NC
 
Join Date: Dec 2008
Posts: 5,264
Mein Auto: 1992 525i
Stomp test first to check for codes (if your 520 has it)

Vacuum leak, ICV ...
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Most problems are usually something simple !

Quote:
Originally Posted by noego View Post
It's Deja Poo - as in, I've heard this **** before.
Steve

Calypso Red 1992 525i with 200K miles

1991 735i - Sold
1992 525i - Sold
1995 325is - Sold
2000 528i - Sold


Last edited by BMR_LVR; 06-29-2011 at 04:11 PM.
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  #3  
Old 06-30-2011, 03:31 AM
1992jorge525 1992jorge525 is offline
'92 BMW 525i
Location: Frankfurt, Germany
 
Join Date: Jan 2011
Posts: 231
Mein Auto: 1992 BMW 525i
Can u walk me
Through the stomp test... Never done it....
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  #4  
Old 06-30-2011, 05:55 AM
BMR_LVR's Avatar
BMR_LVR BMR_LVR is offline
Humble E34 lover
Location: Asheboro, NC
 
Join Date: Dec 2008
Posts: 5,264
Mein Auto: 1992 525i
See here:

http://www.bimmerfest.com/forums/sho...65#post5936965

Steve
__________________
Most problems are usually something simple !

Quote:
Originally Posted by noego View Post
It's Deja Poo - as in, I've heard this **** before.
Steve

Calypso Red 1992 525i with 200K miles

1991 735i - Sold
1992 525i - Sold
1995 325is - Sold
2000 528i - Sold

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  #5  
Old 06-30-2011, 07:44 PM
luckydog's Avatar
luckydog luckydog is offline
Lucky to drive a BMW
Location: Ca
 
Join Date: Nov 2010
Posts: 1,356
Mein Auto: 2006 M5///
I would do it like this. New Air filter,MAF spray in sensor and throttle body wile running. Intake boot must have both clamps. Check for sm 1/4 inch vacuum hose to pressure regulator at rear of fuel rail , they crack. Run a can Sea Foam 1/2 gas 1/2 engine. change oil and filter 50 miles later. If your plugs are over a year old check them for replacement. All this can be done for $60 or so and 2 hrs labor.
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  #6  
Old 07-01-2011, 01:55 AM
1992jorge525 1992jorge525 is offline
'92 BMW 525i
Location: Frankfurt, Germany
 
Join Date: Jan 2011
Posts: 231
Mein Auto: 1992 BMW 525i
Thanks I'll try this today, or at least start today.
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  #7  
Old 07-03-2011, 05:19 PM
japbike736 japbike736 is offline
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Location: Pismo Beach, CA
 
Join Date: Apr 2009
Posts: 109
Mein Auto: 1990 535i, 1999 911
I had a weak coil that made mine do the same thing.......
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