Ignition Leads Query!!!!

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--alpina--
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Post Tue Oct 31, 2006 5:31 pm

Hi guys, just a quick question, on the 325 ignition leads there is a cable that is connected to one of the leads and runs thru to the diagnostic plug area thats has a conncetion, what is that? as i have replaced my leads totally with a performance K1 leads and it is no longer connected to it... would is cause any problems?



J.
Chris
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Post Tue Oct 31, 2006 11:03 pm

Some people say yes, some people say no, if you can try and fit it back on, but if not it wont do any harm but if the car starts running rough you'll need to fit it back on. Shoul dbe able to take the rubber boot off the end of the lead and slip it on.
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Templ8e30
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Post Tue Oct 31, 2006 11:12 pm

I have a set of Magnecor leads that don't have this pick-up, I've been running it like this for a year with zero side effects.

Apparently it's only connected to the diagnostic socket and not the Motronic so has no effect on the engine management.

Cheers,

Iain T
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--alpina--
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Post Tue Oct 31, 2006 11:36 pm

Cheers guys for your reply, it makes sence regards to the diagnostic side and not the motronic stated....


Jimi
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Brianmoooore
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Post Wed Nov 01, 2006 12:28 am

As far as I can tell, it depends on the Motronic version fitted.
On some, the sensor (effectively a cam position sensor) is only connected to the diagnostic socket, but on others it feeds the ECU as well.
The missing signal will not stop the car running, but will have a small effect on power and economy.
Your E30 left the factory fitted with "performance" ignition leads, which, unless they have been physically damaged, are still as good as they were then. Nothing whatever to be gained by "uprating" them.
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reggid
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Post Wed Nov 01, 2006 12:33 pm

the inductive pickup which i think you guys are reffering to makes it so the motronic doesn't fire the injectors all at the same time which is better for efficiency but it should run fine without this.