E34 335i (M30B35) running issue...

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Minstrel
E30 Zone Newbie
E30 Zone Newbie
Posts: 41
Joined: Sat Oct 29, 2011 11:00 pm

Post Thu Mar 29, 2012 11:44 pm

Just purchased a E34 donor car ready for my E30 conversion!
Car runs fine for about 10 minutes then just cuts out?
Dosent misfire or run lumpy before hand?...
Then when warm won't start at all?!

Any ideas???

Thanks!
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Minstrel
E30 Zone Newbie
E30 Zone Newbie
Posts: 41
Joined: Sat Oct 29, 2011 11:00 pm

Post Thu Mar 29, 2012 11:46 pm

Could it be the Air Flow Metre?
Or Fuel Pump?
MJJ_ZX6RR
E30 Zone Regular
E30 Zone Regular
Posts: 660
Joined: Mon Nov 10, 2008 11:00 pm
Location: Wiltshire, UK

Post Fri Mar 30, 2012 12:39 pm

Mine had a similar issue that proved to be a faulty lambda sensor in the exhaust. Unplugging the lambda and letting the engine run on the default fuel map is a quick and easy test.

Puzzled by the 'does not run lumpy or misfire' comment though. Any lambda, AFM, fuel pump, temp sender etc type fault would cause a gradual, lumpy stop over 4-5 seconds.

Martin.
----------------------------------------------------
Lots of bikes, the odd modern BMW, and now an 88 e30 335i Cab project with E32 running gear
Speedtouch
Old Skooler
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Joined: Tue Feb 14, 2006 11:00 pm
Location: Canterbury

Post Fri Mar 30, 2012 1:00 pm

Check all electrical connections, including the engine to body earth strap.

Does the car have an immobiliser? Perhaps it has a delayed effect before it cuts in to stop the engine.
///M aurice
ECU Upgrade EPROM Chips, £40 posted within the UK. Note these are not Zone chips.
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