E24 no spark???

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raulandthetwins
E30 Zone Newbie
E30 Zone Newbie
Posts: 68
Joined: Wed Oct 11, 2006 11:00 pm
Location: Swindon

Sat Jan 19, 2008 8:48 pm

Been to look at an old 635 thats been sat for a year, tried to jump start it and it will turn over but no spark!
Anybody got any clues?
It was raining called it a day before pi55ing around to much
Cheers
Speedtouch
Old Skooler
Old Skooler
Posts: 14060
Joined: Tue Feb 14, 2006 11:00 pm
Location: Canterbury

Sat Jan 19, 2008 8:52 pm

Could be a duff ignition coil or ECU (or even missing altogether!), or a loose connection/bad earth. Best to check for power (12V pulsing with the engine turning over) reaching the coil low tension (LT) terminals and go from there.
///M aurice
ECU Upgrade EPROM Chips, £40 posted within the UK. Note these are not Zone chips.
viewtopic.php?f=6&t=279421
raulandthetwins
E30 Zone Newbie
E30 Zone Newbie
Posts: 68
Joined: Wed Oct 11, 2006 11:00 pm
Location: Swindon

Sat Jan 19, 2008 8:58 pm

Cheers the owners bet was a bad earth, trip out with the voltmeter me thinks, well if it finally stops raining!
Andyboy
Alpina Colada
Posts: 12576
Joined: Mon Sep 11, 2006 11:00 pm

Sun Jan 20, 2008 6:09 pm

Find the DME relay (five pin) on the fuse box. Check for 12v at the red wire (12v feed) with ignition on. No power = wiring fault. If there's power there, check for 12v at the red/blue wire (12v to ECU). No power there could be a bad earth (ground the connection to battery earth - ) or a faulty DME relay (very common).

Start there and let us know.
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