XCo Gremlins

[BBB888]

My XCo was 'hunting' with revs rise and fall at tickover, when slowing fro junctions etc and the occasional stall. Thought I should clean out the TPS. Stripped bodywork and airbox off and set to with a can of spray carb cleaner. Then removed the round black plastic box just ahead of the rectangular shaped box (which I think is actually the TPS) on the right side of the inlet. Battery removed and I also removed various accessory leads from positive and negative as an effort to tidy up routing (heated gloves, waistcoat, phone charger, ctek charger etc). Then when reassembling as soon as both main positive and negative cables attached there's a constant whirring sound which only stops when I remove either positive or negative lead. Hard to identify source, seems to be lower in the engine than the inlet. Tried ignition but nothing comes on. Blank instrument panel. Just the whirring sound when ignition off and both cables attached.
Not sure if its related to removing the round plastic box with a pointed rod in it (mounts on front side of throttle body). Might need a better mechanic than me. So if anyone knows someone well versed in the XCo in either Hampshire/West Berkshire or Wiltshire please let me know and I'll run the bike over to them for a looksy! Or does the forum have some wisdom to share on this?
Thanks all.

 

[drimcong]

good luck, could you download the reprom, the manual, for the 650?
650 reprom
the only 'whirr' is the pump priming and maybe the iacv?
otherwise John, a public appreciation, to the rescue?

 

[BBB888]

good luck, could you download the reprom, the manual, for the 650?
650 reprom
the only 'whirr' is the pump priming and maybe the iacv?
otherwise John, a public appreciation, to the rescue?

Thanks. I'm aiming to tackle it over the weekend. Just disconnect all electrical accessories, check battery is charged and start from just connecting the main positive and negative to see if that works. If not and I have a 'whirring' I will try to identify where its coming from. The part I removed is the iacv, with a rod ending with a rounded point at the end. Gave it all a good clean with carb cleaner - left lots of black on my piece of kitchen roll. Didn't remove the TPS as mine is fixed by small Phillips screws which start to round off without moving when I applied the screwdriver. Looks as though its never been off as has black marking across screw top which hasn't been broken. Will see how I get on.........

 

[BBB888]

Thanks. I'm aiming to tackle it over the weekend. Just disconnect all electrical accessories, check battery is charged and start from just connecting the main positive and negative to see if that works. If not and I have a 'whirring' I will try to identify where its coming from. The part I removed is the iacv, with a rod ending with a rounded point at the end. Gave it all a good clean with carb cleaner - left lots of black on my piece of kitchen roll. Didn't remove the TPS as mine is fixed by small Phillips screws which start to round off without moving when I applied the screwdriver. Looks as though its never been off as has black marking across screw top which hasn't been broken. Will see how I get on.........

Eureka. After removing all the accessories wiring on battery (gloves/waistcoat/Quadlock charger/F2R light/and putting battery on charge until I had 13.2v, I then reconnected with just the battery positive and negative.......nothing, all dead. Checked fuses and found 15A had blown. Replaced and now runs like a good 'un. No idea what the 'whirring' was - its not there now - and presume all my amateur electrics connecting a stack of eyelets to each battery terminal had caused the failed fuse. Looks like summer is here so I wont need all the heated gear, and will get a professional to fit another fuse box to run the accessories before winter comes again.

 

[Deleted account 250722001]

For spaghetti wiring due to accessories, consider fitting one one those.
Spare fuses under red tape!
Easy peasy to fit

 

[BBB888]

For spaghetti wiring due to accessories, consider fitting one one those.View attachment 397277
Spare fuses under red tape!
Easy peasy to fit

Thunder Box? Thought that was the smallest room in the house......I've just googled it and looks ideal. Many thanks. A job for the Autumn I think when the clocks change back and I have a few dark evenings to spend fiddling with the bike.

 

[Deleted account 250722001]

The usefulness of this device is that it will not switch on any accessories until it receives steady charging power from your precious.
(provided they are wired in correctly through the T.box naturally!)