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E30 (1982 - 1993)
God's Chariot. The E30 was produced primarily from 1982 through 1991. The cabriolet was the one exception which was produced through 1993.

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  #1  
Old 05-18-2017, 07:02 AM
jjg825 jjg825 is offline
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Location: Allentown, PA
 
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Mein Auto: 1984 318i
1984 318i rough idle, holds 750-800 rpm though

As stated -- 1984 318i has a rough idle and will stall occasionally when first started, but most times will stay running -- although in a very rough fashion. Once I drive down the street she will not stall and will hold the idle between 750-800 rpm, but it's a rough idle. Not super rough, but rougher than normal.
Also, when driving under hard acceleration there is a slight hesitation (or stepping). And lastly, when pushing in the clutch when coming up to a stop, the idle will dip down under 500 rpm, then quickly normalize.
Approximately 2 years ago the head was rebuilt and all hose (and lots of other parts) were replaced. The cold start valve was leaking and replaced. The ICV has been cleaned and rattles when shaken -- my assumption is that is a good thing, meaning it is not frozen?
I would appreciate any suggestions on what the most likely culprit is?
Thanks!
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  #2  
Old 05-21-2017, 03:24 PM
jjg825 jjg825 is offline
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Mein Auto: 1984 318i
Cricket

Cricket
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  #3  
Old Yesterday, 09:00 PM
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Rustneversleeps Rustneversleeps is offline
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Location: New Brunswick,Canada
 
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Mein Auto: 1988 BMW 325iC
Are you sure it's not a vacumm hose some where..
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88 325iC,16 Nissan Pro 4X,13 Honda TRX420,07 Volano 50cc
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Old Today, 08:07 AM
jjg825 jjg825 is offline
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Mein Auto: 1984 318i
Thanks for your reply.
I'm not sure of anything. I would be more inclined to believe that something a hose is connected to is leaking, rather than a hose. As I stated, all of the hoses were changed. That said -- I'm not positive none of them are leaking. Is there a simple way to check for a vacuum leak?
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318 1984, icv, idle issue, m10


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