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7 Series DIY
Do It Yourself forum dedicated for 7 Series BMW Owners

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  #1  
Old 09-26-2016, 07:42 AM
Calvinhopper77 Calvinhopper77 is offline
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Location: Colorado
 
Join Date: Jul 2016
Posts: 9
Mein Auto: 318i
Rough idle

Hey guys, i have a 1995 740il. Right now its idling really rough. I pulled a 1213 code from the check engine light. I want to see if its generally the o2 sensors that go out or if its usually a vacuum leak somewhere. Any ideas? And the last thing, my blower motor works intermittenly. It only works on a cold morning and only for a little while. Is it just the resistor or should i replace the motor itself as well? Thanks guys!
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  #2  
Old 11-29-2016, 03:24 PM
mako1457 mako1457 is offline
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Location: Florida
 
Join Date: Oct 2012
Posts: 27
Mein Auto: 2006 750li
Hi Calvinhopper,

I just went through a similar idle situation as well. I had an oil leak on my right bank which required a valve cover gasket. Car is a 2006 750li. I replaced the gasket and no more rough idle. What a pleasure. Look for the simple things first then the sensors....etc. Don't forget to check your CCV diaphragms...they tend to crack, thus causing smoke after long idle. Check all vac lines and all rubber thoroughly.
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  #3  
Old 11-30-2016, 08:44 PM
Calvinhopper77 Calvinhopper77 is offline
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Location: Colorado
 
Join Date: Jul 2016
Posts: 9
Mein Auto: 318i
Quote:
Originally Posted by mako1457 View Post
Hi Calvinhopper,

I just went through a similar idle situation as well. I had an oil leak on my right bank which required a valve cover gasket. Car is a 2006 750li. I replaced the gasket and no more rough idle. What a pleasure. Look for the simple things first then the sensors....etc. Don't forget to check your CCV diaphragms...they tend to crack, thus causing smoke after long idle. Check all vac lines and all rubber thoroughly.
So just replacing the valve cover gasket fixed it for you? That's crazy. Now what are the ccv diaphrams? I'm fairly certain my throttle body gasket is leaking. I ended up stripping the bottom center bolt. So I'm just going to pull off the covers, replace those gaskets, along with the throttle body gasket. How long did it take you to do the valve cover? Any tips?
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