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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E30 (1982 - 1993)

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 03-05-2005, 12:41 PM
rgouette rgouette is offline
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Location: Maine
 
Join Date: Mar 2005
Posts: 11
Mein Auto: 1987 325
"Fixed" my idling problem: 1987 325

Just bought the car, & it had that notorious surging/revving problem where after reaching operating temperature, the engine would rev between around 900 & 1500 RPM.

I bravely(perhaps foolishly) decided to try adjusting the Idle Air Stabalizer Valve screw (remembering where & how much I was turning) & I found that with 2 turnsclockwise(into the body of the valve) the engine is now settled around 900 RPM.
Much better I think than that other buisines!
I hope it stays!

Cheers!
Rich
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  #2  
Old 03-07-2005, 07:09 AM
rgouette rgouette is offline
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Location: Maine
 
Join Date: Mar 2005
Posts: 11
Mein Auto: 1987 325
hmmm, welll maybe not exactly 'fixed'....

Quote:
Originally Posted by rgouette
Just bought the car, & it had that notorious surging/revving problem where after reaching operating temperature, the engine would rev between around 900 & 1500 RPM.

I bravely(perhaps foolishly) decided to try adjusting the Idle Air Stabalizer Valve screw (remembering where & how much I was turning) & I found that with 2 turnsclockwise(into the body of the valve) the engine is now settled around 900 RPM.
Much better I think than that other buisines!
I hope it stays!

Cheers!
Rich
This morning it seems to still surge, but not quite so bad.
Guess I'll be digging in more. ECU?
I haven't changed basic stuff yet, like plugs, cap, & even the air filter so guess I'll
hold offf on positive results till I change that stuff.

Rich
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  #3  
Old 03-07-2005, 08:46 AM
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pup pup is offline
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Location: denver
 
Join Date: Jan 2004
Posts: 247
Mein Auto: 89/94 325is 02 325i 05mcs
see if this link helps:
http://www.mesaperformance.com/faqs/idle.html
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  #4  
Old 03-07-2005, 07:54 PM
rgouette rgouette is offline
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Location: Maine
 
Join Date: Mar 2005
Posts: 11
Mein Auto: 1987 325
Excellent!

Hey, thanks man. Did a quick readthrough, & will try some of the big wisdom contained therin..

cheers!!
Rich from Maine
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  #5  
Old 03-26-2005, 09:19 PM
Nowak Nowak is offline
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Location: Saylorsburg, PA
 
Join Date: Mar 2005
Posts: 2
Mein Auto: 1988 E30 325e
Quote:
Originally Posted by pup
That has to be one of the best write ups I've ever seen. I've had an idle problem for a couple of years now and I hope I can find my reason in here. Is there anyway that the ICV or ICM could cause a missfire at idle. My car runs fine when moving, just a bad missfire when I stop.
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  #6  
Old 04-08-2005, 10:16 AM
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9x16 9x16 is offline
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Location: Calgary,Alberta
 
Join Date: Apr 2005
Posts: 106
Mein Auto: 89 BMW 325i (4 door)
Wink

I had that problem on my previous 325e.I replaced the o2 sensor,and the problem was gone.If your car has rough idling,hesitating,other related problem.Then its more than likely the 02 sensor in your exhaust.
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Old 04-08-2005, 06:50 PM
SWISS SWISS is offline
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Mein Auto: E30 S52 / S52 M roady
idle stuff

buy a haynes or bentley repair manual (20-40 bucks) and get out your voltometer and check the ohm's and voltage resistance in these things throttle position switch ,air flow meter,and then check your feul pressure and your fuel pressure regulator . Oh and try running your car at night looking at the plug wires this way you can see if a wire is grounding to the motor and some bosch plat +4's would be nice, i havn't found an rough idle yet that a $6.99 spark plug couldn't fix.good luck
p.s.if all else fails check compression
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