Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

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.

Reply
 
Thread Tools Display Modes
  #1  
Old 12-05-2013, 02:06 PM
rustyroots rustyroots is offline
Registered User
Location: united states, north Carolina
 
Join Date: Dec 2013
Posts: 5
Mein Auto: 1986 bmw 325 es
my idle keeps climbing.

So i have a 1986 325es i recently took off the valve cover to adjust my valves but i didn't have the right box end wrench, but ever since i put the cover back on my car is idling really high until i put it in gear and when i decelerate the car bogs down, I'm thinking it's the idle air control but it still acts almost the same when unplugged any suggestions?
Reply With Quote
Advertisement
  #2  
Old 12-06-2013, 01:29 AM
Billwill Billwill is offline
Officially Welcomed to the 'Fest
Location: South Africa
 
Join Date: Oct 2009
Posts: 521
Mein Auto: BMW E30 318i 1991
Quote:
Originally Posted by rustyroots View Post
So i have a 1986 325es i recently took off the valve cover to adjust my valves but i didn't have the right box end wrench, but ever since i put the cover back on my car is idling really high until i put it in gear and when i decelerate the car bogs down, I'm thinking it's the idle air control but it still acts almost the same when unplugged any suggestions?

Is the valve cover seating firmly? You need a good gasket or RTV silicone to stop vacuum leaks there.
Reply With Quote
  #3  
Old 12-06-2013, 04:13 AM
toybuilder's Avatar
toybuilder toybuilder is offline
Officially Welcomed to the 'Fest
Location: Eastern Panhandle, WV
 
Join Date: Feb 2013
Posts: 664
Mein Auto: 89 325i 2dr&DucatiMonster
Or you could buy a valve cover gasket and torque it down properly .Also you might want to check your oil cap seal and make sure you didn't pull one of the U shaped seals (rocker arm shaft plug) up and forget to put it back (in the back by the fire wall most likely). Also since you had to remove your ICV to get the valve cover off you should check the hoses carefully to make sure they didn't crack and cause a leak.
Reply With Quote
  #4  
Old 12-06-2013, 09:49 AM
rustyroots rustyroots is offline
Registered User
Location: united states, north Carolina
 
Join Date: Dec 2013
Posts: 5
Mein Auto: 1986 bmw 325 es
Re: my idle keeps climbing.

I have new gasket on order and I already replaced the icv hose so I'm hoping the new gasket works will update.


Sent from BimmerApp mobile app
Reply With Quote
  #5  
Old 12-06-2013, 08:43 PM
rustyroots rustyroots is offline
Registered User
Location: united states, north Carolina
 
Join Date: Dec 2013
Posts: 5
Mein Auto: 1986 bmw 325 es
Re: my idle keeps climbing.

As silly as it sounds my little bullet connector to the idle air control had a broken connection.

Sent from my SGH-T769 using BimmerApp mobile app
Reply With Quote
  #6  
Old 12-07-2013, 01:13 AM
Billwill Billwill is offline
Officially Welcomed to the 'Fest
Location: South Africa
 
Join Date: Oct 2009
Posts: 521
Mein Auto: BMW E30 318i 1991
Quote:
Originally Posted by rustyroots View Post
As silly as it sounds my little bullet connector to the idle air control had a broken connection.

Sent from my SGH-T769 using BimmerApp mobile app
Not silly at all....little problems like this on an old car will always happen and grind things to a halt!
Reply With Quote
  #7  
Old 12-07-2013, 02:41 AM
2002-530I 2002-530I is offline
Officially Welcomed to the 'Fest
Location: Corning
 
Join Date: Sep 2013
Posts: 189
Mein Auto: 2002 BMW 530I Sport
my idle keeps climbing.

Sounds like you have a leaky valve cover gasket.
I'd try eliminating it by using a pair of smooth pliers such as needle nose that lock and pinch off the CCV/PCV that goes to the intake. If the idle drops while you plug it the problem is the valve cover...


Sent from BimmerApp mobile app
Reply With Quote
  #8  
Old 12-07-2013, 09:20 AM
toybuilder's Avatar
toybuilder toybuilder is offline
Officially Welcomed to the 'Fest
Location: Eastern Panhandle, WV
 
Join Date: Feb 2013
Posts: 664
Mein Auto: 89 325i 2dr&DucatiMonster
I wouldn't do that unless you have another hose they usually get brittle from being under the intake and will crack if you try to pinch it off. It's not regular hose it's heavy vacuum hose and can't be replaced with just any old hose .Once it gets oil in it and gets hot it will collapse and stop working ,making a big mess under your hood not to mention the leak.Did you replace the connector on the IAV man those things can be really sensitive, they need to be dead on or they just don't work worth a damn .

Last edited by toybuilder; 12-07-2013 at 09:29 AM.
Reply With Quote
  #9  
Old 12-07-2013, 08:05 PM
2002-530I 2002-530I is offline
Officially Welcomed to the 'Fest
Location: Corning
 
Join Date: Sep 2013
Posts: 189
Mein Auto: 2002 BMW 530I Sport
my idle keeps climbing.

Quote:
Originally Posted by toybuilder View Post
I wouldn't do that unless you have another hose they usually get brittle from being under the intake and will crack if you try to pinch it off. It's not regular hose it's heavy vacuum hose and can't be replaced with just any old hose .Once it gets oil in it and gets hot it will collapse and stop working ,making a big mess under your hood not to mention the leak.Did you replace the connector on the IAV man those things can be really sensitive, they need to be dead on or they just don't work worth a damn .
I didn't realize they were not made of regular fuel vapor hose. How about disconnecting it from the intake and plugging it?


Sent from BimmerApp mobile app
Reply With Quote
  #10  
Old 12-08-2013, 05:26 AM
BMWFatherFigure's Avatar
BMWFatherFigure BMWFatherFigure is offline
Old School
Location: Perth, Western Australia
 
Join Date: Aug 2012
Posts: 2,338
Mein Auto: E23;E30;E38;E32;E34 +
That would work as a test. Check all the hoses for splits and cracks. If you were that bad at putting the top back on you would have an oil leak too. Does it leak oil?
__________________
Good - Fast - Cheap: Pick any two.
Current:
E23 735i; E32 735iL (X 2 - 1 Alpine White and 1 Glacier Blue); E34 535i; E38 735iL; R50 Cooper; R55 Cooper Clubman.
Previous:
E21 318i; E30 318i; E32 735iL; E34 535i; E38 730iL; E53 4.4i
Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E30 (1982 - 1993)
Today's Posts Search
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On



Forum Jump


All times are GMT -7. The time now is 09:58 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
© 2001-2011 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms