320i cold idle issues

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Moderator: martauto

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keith2874
E30 Zone Newbie
E30 Zone Newbie
Posts: 4
Joined: Thu Feb 09, 2017 11:00 pm

Post Fri Feb 15, 2019 9:47 am

Hi there

I have a 1990 320i which has a cold idle issue

When you start it it is overfuelling and can easily flood - it then hunts for the first few minutes but once warm runs fine with no issues

It's had a new blue sensor and we've checked for air leaks but found no issues

Does anyone have experience of this and if so what should I be looking for next? I have heard sometimes issues like this are related to a corroded multiplug on the engine or dodgy AFM but really would appreciate any pointers before we start pulling it apart again.

Regards

Keith
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arrisbmw
E30 Zone Regular
E30 Zone Regular
Posts: 466
Joined: Sat May 06, 2017 11:00 pm

Post Tue Feb 19, 2019 10:28 pm

could well be your idle control valve , needs cleaning .
next check tps is set correctly.
then the obvious plugs. leads and rotor arm and dizzy cap are good condition.
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arrisbmw
E30 Zone Regular
E30 Zone Regular
Posts: 466
Joined: Sat May 06, 2017 11:00 pm

Post Wed Feb 20, 2019 12:45 pm

then i,d go fuel pressure . leaking injector possible
TheWolfman
E30 Zone Newbie
E30 Zone Newbie
Posts: 165
Joined: Wed Feb 06, 2019 10:56 pm
Location: LDN

Post Thu Mar 28, 2019 11:24 pm

Just wondering if you got anywhere with this at all?What you describe is basically exactly the same issue I have on a '84 Baur 320i.I suspect it's an issue with my cold-start valve (air slide valve) ,which is very different to what you have on the later E30 though.