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Old 08-12-2001, 19:16   #1 (permalink)
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Clutch/Gear Switch???

What exactly does the clutch and gear switch do in an XF EFI?

I have tried to find out but to no avail.
The only mention of the clutch and gear switch in the gregory's manual is in the electrical diagrams.

Thanks
Paul
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Old 08-12-2001, 20:03   #2 (permalink)
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(\/)ADXF

If your efi is similar to an EA the clutch switch and gear switch are used to cancel fuel shut off and lean cruise modes when either out of gear or when the clutch pedal is depressed.
The switches are wired in parrallel
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Old 08-12-2001, 20:08   #3 (permalink)
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Tells the EST box whether its in neutral and when clutch is disengaged so that motor runs accordingly. I think the clutch switch is related to emissions so that ECU knows when revs are going to drop, but I can't remember what. Maybe retards timing to reduce emissions?
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Old 08-12-2001, 20:20   #4 (permalink)
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Thanks for that guys. That sort of confirms what I thought.

when the clutch is in or it is in neutral the ECA lowers the idle.

Where abouts does the gear switch go on a Borgy Single-rail?

Thanks again
Paul
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Old 08-12-2001, 22:54   #5 (permalink)
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Quote:
Originally posted by (\/)ADXF
Where abouts does the gear switch go on a Borgy Single-rail?

Thanks again
Paul
Should be terminals on box. Can't remember (and I only put new clutch in a couple of months ago and had to do it then) where, but I think it's around selector lever housing. Don't know if pre-EST boxes had the terminals, but obviously might not have.
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Old 08-12-2001, 23:00   #6 (permalink)
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I just remebered that the box I've got is from an XE EFI.

In the gregory's manual the only gear box that it shows having the gear switch is in the supplement section on the T5OD.

Are there any updated manuals for XF's?

Thanks
Paul.
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Old 08-12-2001, 23:43   #7 (permalink)
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Paul

You might be lucky.

I'm not familiar with XE EFI (was that the Bosch Jetronic or something - pre-EECIV anyway isn't it?), but I'm assuming it had computer control in which case the box might have a neutral switch on it.
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Old 08-12-2001, 23:47   #8 (permalink)
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I have had a look at it and it only has reverse lights switch.

Also can you tell me why my clutch pedal will go right up to touch the dash if I adjust the cable?
I would have thought that there was a metal pin or something to stop it from going that high.

Paul.
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Old 08-13-2001, 00:10   #9 (permalink)
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Paul

Are you converting from auto to manual?

Is there a return spring on clutch pedal? That should stop pedal going forward.

Here's a tip if you're working on an XF. The firewall is too weak for the clutch cable and it will flex and probably pull a section of firewall through in time. Mine went at under ?150,000. If it's a weld job it's expensive and it can easily be avoided. Get a clutch cable spigot from an XD/XE ($1 from Pick a Part if they charge you at all) and fix to the firewall the same as it's fixed to XD/XE. You could strengthen the area with a steel plate first if you want belt and braces security.
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Old 08-13-2001, 00:14   #10 (permalink)
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The conversion has already been done.

There just a few things I am noticing over time.

The clutch pedal has a return spring, but the pedal can be lifted high enough so that you cant get your foot on it. It literally touches the plastic under the hand brake.

Its stuff I'll get around to fixing one day.

Paul.
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