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E34 (1989 - 1995)

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  #1  
Old 11-15-2012, 10:49 AM
jbarry54 jbarry54 is offline
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Mein Auto: 1995 E34
1995 525i engine runs rough

Hi Bimmerfest,

I have a 1995 525i e34, m50 engine. The engine lacks power and runs really rough until I hit about 3000 rpms and then it gets somewhat better, but still rough. Attempted the stomp test with zero results. Someone suggest that it's the idle control valve but this rough running is not at idle. Yesterday, while acceleration onto the highway, it just bogged down and would not go forward. I had to shut the car off, it restarted and I was able to get home. I did pull the MAF out and used MAF cleaner on it. That did not make it better. Any suggestions would help.
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  #2  
Old 11-15-2012, 11:08 AM
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Monsignor Monsignor is offline
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Location: Pineapple Under the Sea
 
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Mein Auto: M50 Big Body
Quote:
Originally Posted by jbarry54 View Post
Hi Bimmerfest,

I have a 1995 525i e34, m50 engine. The engine lacks power and runs really rough until I hit about 3000 rpms and then it gets somewhat better, but still rough. Attempted the stomp test with zero results. Someone suggest that it's the idle control valve but this rough running is not at idle. Yesterday, while acceleration onto the highway, it just bogged down and would not go forward. I had to shut the car off, it restarted and I was able to get home. I did pull the MAF out and used MAF cleaner on it. That did not make it better. Any suggestions would help.
Check your plugs for oil in case you have a leak which could be fouling them up and subsequently the coils.
Check your air filter, such a simple thing with such a big job.
Good on you cleaning the MAF that would also have been in the list.
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1995 525iA 250k mi
2006 325i/6 57k mi
2003 350Z 88k mi

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  #3  
Old 11-16-2012, 05:40 PM
jbarry54 jbarry54 is offline
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Mein Auto: 1995 E34
Thanks!

Thanks for your reply, I will attack the Beemah in the morning.
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  #4  
Old 11-27-2012, 03:30 PM
jbarry54 jbarry54 is offline
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Mein Auto: 1995 E34
Thanks 95 E34!

Quote:
Originally Posted by 95 E34 View Post
Check your plugs for oil in case you have a leak which could be fouling them up and subsequently the coils.
Check your air filter, such a simple thing with such a big job.
Good on you cleaning the MAF that would also have been in the list.
Found the leak in the spark plug tubes, removed and replaced the valve cover and spark plug gaskets, got new boots, and air filter. Thanks for your reply. She's running like a brand new E34.

I owe you a couple cold ones. Have a happy and safe holiday season.

Bravo Zulu.

Last edited by jbarry54; 11-27-2012 at 03:32 PM. Reason: editing
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  #5  
Old 11-27-2012, 04:34 PM
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BMWFatherFigure BMWFatherFigure is offline
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Location: Perth, Western Australia
 
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Mein Auto: E23;E30;E38;E32;E34 +
Love a story with a happy ending.......................
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E21 318i; E30 318i; E32 735iL; E34 535i; E38 730iL; E53 4.4i
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  #6  
Old 11-28-2012, 11:58 AM
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Monsignor Monsignor is offline
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Location: Pineapple Under the Sea
 
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Quote:
Originally Posted by jbarry54 View Post
I owe you a couple cold ones. Have a happy and safe holiday season.
Very happy to hear it!! Careful with the offer, Lancaster isnt too far from me, may just take you up on it one of these days
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1995 525iA 250k mi
2006 325i/6 57k mi
2003 350Z 88k mi

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