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Author Topic: WANTED: 2nd-hand lambda oxygen sensor for 2001 F650GS  (Read 256 times)

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Offline Zanie

WANTED: 2nd-hand lambda oxygen sensor for 2001 F650GS
« on: February 05, 2018, 09:20:32 pm »
Anyone have a second-hand lambda oxygen sensor for a 2001 F650GS? Even if only for loan? Part number 11787685320.

It may be the cause behind intermittent "fuel starvation" symptoms, but it's damn pricey to get, especially if not completely sure that this is indeed the cause.

The wiring harness of my bike was checked/fixed up and no hectic symptoms since, but it has only been a day (and the symptoms don't always show), so I'm sending a preemptive call out there in case the issue is not resolved.

Edit (6 Feb): Problem still persisting.
« Last Edit: February 06, 2018, 06:50:28 pm by Zanie »
 

Offline Jughead

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Re: WANTED: 2nd-hand lambda oxygen sensor for 2001 F650GS
« Reply #1 on: February 05, 2018, 09:23:12 pm »
What are the symptoms you are experiencing?
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Offline Zanie

Re: WANTED: 2nd-hand lambda oxygen sensor for 2001 F650GS
« Reply #2 on: February 05, 2018, 09:40:52 pm »
What are the symptoms you are experiencing?

Every now and then it feels as if I had just let go of the throttle completely. The bike seems to "jerk back", maybe a couple of times in quick succession, and then gets going again. It started on a day-ride in very, very rainy conditions. Hence the fuel was checked for water. Fuel filters, fuel injector and air filter all checked.

It can happen while accelerating or cruising. The worst occurs when cruising at 100-120 km/h. It seems to occur more often when the bike's warm. Yet it's intermittent enough that it has not shown up once while being ridden by any mechanic!! It's damn scary when you're trying to go for a gap in the traffic or get out of a sticky situation and the bike hesitates or jerks.

FYI: coil and lead also checked.
 

Offline Jughead

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Re: WANTED: 2nd-hand lambda oxygen sensor for 2001 F650GS
« Reply #3 on: February 05, 2018, 09:49:52 pm »
Remove the preload adjuster where it attaches to the frame.  Check the wiring harness behind the adjuster.  The bolt on the back of the adjuster has a habit of biting into the harness.  Make sure there are no bare patches where the copper wire is sticking out.  The wiring on the outside of the harness is usually the injector/fuel pump wiring, so when it shorts out the motor will stall.
« Last Edit: February 07, 2018, 04:20:50 pm by Jughead »
I came here to drink milk and kick arse!  And i've just finished my milk.
http://www.dsmc.co.za        http://www.triumphowners.com/to-car/mkiii/
Supplier of Ticket to the Moon Hammocks   http://www.ticketothemoon.com             
 

Offline Zanie

Re: WANTED: 2nd-hand lambda oxygen sensor for 2001 F650GS
« Reply #4 on: February 07, 2018, 08:40:18 pm »
I think this was done during the last fix. Apparently the wiring harness was checked (not sure the extent of the check, but it was checked). I've also eye-balled the area behind the preload adjuster (a bit easier for me, given that the big knob at the end is long gone and I need to adjust it using an allen key) and the original wrapping around the wires is still intact.

What else could results in jerks and hesitations? I've read somewhere that worn kill switch or side-stand switch wires could give issues. Maybe something like that? Meanwhile, I'm on a search for a lambda sensor.

Get a BMW, they said. The engine will last forever, they said. It's everything around it that I'm replacing!  :imaposer: