rough idle

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theretroking
E30 Zone Regular
E30 Zone Regular
Posts: 276
Joined: Fri Dec 18, 2009 11:00 pm

Post Mon Dec 15, 2014 8:50 pm

hi have a 318 starts fine from cold but revs are erratic approx
750 rpm -1000 rpm for the first 2 minutes then it fairly smooth,
also if i start the engine while it is warm i have to turn it over for approx 3-4 seconds before it starts, any help would be appreciated.
milescook
E30 Zone Camper
E30 Zone Camper
Posts: 1285
Joined: Thu Jan 13, 2011 11:00 pm
Location: The 'bran of Cwm

Post Mon Dec 15, 2014 9:10 pm

Test the blue temp sensor maybe? http://www.e30zone.net/e30zonewiki/inde ... emp_Sensor

TBH unsure if it would cause the issue but a simple check with a multimeter anyway.
The story so far... http://www.cookracing.co.uk/

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Silverfang
E30 Zone Regular
E30 Zone Regular
Posts: 937
Joined: Fri Dec 23, 2005 11:00 pm
Location: Northampton

Post Mon Dec 15, 2014 11:10 pm

Also worth checking the ICV isn't sticking, if it is, then worth flushing clean with carb cleaner and making sure it doesn't stick.
BMW and Opel, both RWD, both german, both good fun
http://www.clockservicing.co.uk/ For any clock repairs try here.