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Xf weber and ecu. 

 

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 Post subject: Xf weber and ecu.
Posted: Wed Jul 29, 2009 7:38 pm 
Parts Gopher
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Hi i have a xf panelvan it has a 4.1 in it with weber carbie i was just wanting to know how hard is it to install one of the alloy fuel injected engines and ecu out of a fairmont of somthing.
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 Post subject: Re: Xf weber and ecu.
Posted: Wed Jul 29, 2009 7:39 pm 
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Like does the whole wiring have to be replaced in the car or is there other ways to do this.
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 Post subject: Re: Xf weber and ecu.
Posted: Wed Jul 29, 2009 8:48 pm 
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I think it would depend which type of fuel injection syustem you've been able to get. If its jettronic, I think its not too complicated. The full on systems with smartlock and central locking and stuff I think you'd have to change the whole harness and computer. I'm having much the same kinds of drama as you describe, and so thats just based on my experience with it.
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 Post subject: Re: Xf weber and ecu.
Posted: Wed Jul 29, 2009 9:40 pm 
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Im talking about the efi out of an xf fairmont with the alloy tappet cover.
LOL hope that helps.
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 Post subject: Re: Xf weber and ecu.
Posted: Wed Jul 29, 2009 11:24 pm 
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It should say on the computer box what it is. I think the EEC's are all rectangle connector, maybe the jettronic is round... not entirely sure.
I get the impression its best to swap the whole harness and computer, just deal with 5 or 6 wires at ignition (keyswitch). My experience, trying to change bits and pieces leads to very fancy car wrecks.
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 Post subject: Re: Xf weber and ecu.
Posted: Thu Jul 30, 2009 7:44 am 
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just thought they might of ran the same wiring harness.
But soulds like its a big job to replace the wiring.
Is the ecu harness seporate to the cars wireing harness.
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 Post subject: Re: Xf weber and ecu.
Posted: Thu Jul 30, 2009 11:22 am 
Getting Side Ways
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If you have the webber and an XF you may be lucky : the head may already have the injector cutouts.

Otherwise a head change is in order.

You can bolt the EFI manifolds straight up (XF ones) - and if you wanted to do something interesting Id go with an EA/B ECU rather than the XF one and get rid of the Air Flow Metre. use EB Sensors.

The XF EFI Dizzy may be the same as the EA/B one as they moved to EST during that time. So just later model wiring, Air and Temp sensors.

Bit of a project, but interesting.
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 Post subject: Re: Xf weber and ecu.
Posted: Thu Jul 30, 2009 6:45 pm 
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Thanks Nigel so on my xf right now all the wiring should be there for the older EFI is that right all i have to do is bolt up the new head and wires sould all be there is that right.
Or not that easy.

My XF is a 1984 panelvan did have a 3.3 ltr in it but now it has a 4.1 ltr.
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 Post subject: Re: Xf weber and ecu.
Posted: Fri Jul 31, 2009 9:58 am 
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Hang on to the 3.3 engine... I imagine there are plenty that will disagree, but I've found the 3.3 goes faster and handles high revs a bit better than the 4.1 (but obviously delivers less power). A mate of mine reckons its the square bore that helps balance it nicer.
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 Post subject: Re: Xf weber and ecu.
Posted: Fri Jul 31, 2009 11:57 pm 
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honestly, i wouldnt bother with the XF vintage EFI, way too many dramas with aging electronics
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 Post subject: Re: Xf weber and ecu.
Posted: Sat Aug 01, 2009 9:10 am 
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Ok i think ill just stick with the 4.1 and weber. It goes well just uses alot of petrol.
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 Post subject: Re: Xf weber and ecu.
Posted: Sat Aug 01, 2009 5:11 pm 
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in good condition, a carby fed 4.1 is pretty reasonable when it comes to fuel, only problems that cause excess fuel consumption with them are either an excessively heavy right foot, or a carby that needs replacing/rebuilding

EFI 4.1's are a little better on fuel, but the moment ANYTHING goes out of whack, be it a temp sensor, vacuum leak ANYWHERE on the motor (try pulling oil the cap off while the engine is running, it will stall) or even problems with the airflow meter (sticky, dirty contacts, corrosion, etc) will see your fuel economy vanish, and fixing the problems with an EFI will give you grey hairs, send your bank balance further into the red and see your wife leave!
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 Post subject: Re: Xf weber and ecu.
Posted: Sat Aug 01, 2009 11:03 pm 
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4.1 weber is the one for me then lol.
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