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Re: engine idle (archive)
[ Follow Ups ] [ 7-series (E23) Message Board ] [ Msg. Board FAQ ]
Posted by Walter OH 84/733i 87/325i 83/635csi Euro on July 08, 2001 at 10:32:44:

In Reply to: engine idle posted by Joe on July 08, 2001 at 01:05:55:

When I bought my 84 733i, all the approx. 1" diameter hoses for the idle circuit were bad. Its right on top of the engine (between intake and head I think) There is an idle control valve that gets dirty stops working (can be cleaned) and an idle circuit activated by an idle switch. If you have the Benley's for 5 series, you can do a complete diagnostic at the Motronic box - thats how I fixed my idle irregularities - mine had idled perfectly for over 2 years.


i have a 1983 733i,and when it is started,the idle drops very low,then races,cycling back and forth. Does anyone know what causes this,and how to fix it ?
thank you




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