02 Califirnia stone bucking, and popping back under load.

[ken farr]

Hey all  I found out what the problem was.... it was in fact a sensor... what one you ask?,,,,,,  ya...  well about that...…
So.. seems my fuel sensor is broke...  WHAAAA
You know...  Ive been working on cars and equipment for WAYYYY to many years to be missing this...  I think I just expect the worse...  Any way....  thank you all for your time, and help. Ill just sit over here and put on the dunce hat......yup...  im a freaken moron...

s1120:

  I am truly sorry to hear you fixed your machine, I was about to offer to come by, load that POS in my pickup and haul it away.
  Free of charge.   

 Anyway, forget the dunce cap, it's all a learning experience....

kjf

[Kev m]

   I'm a little confused. Fuel sensor, you mean the low fuel sensor? How could that cause the symptoms you were having?

He was running out of gas.... Lol.

Actually great tenacity sticking with it though.

[Kiwi_Roy]

Ha Ha, that'll do it

Wait till the Daughter finds out

[s1120]

Ha Ha, that'll do it

Wait till the Daughter finds out

LOL  oh ya she was not happy!!

You know I didn't even freaken think of it..  The bike is new to me, and I had no idea how many miles it would go to a tank...I saw the light flicker on my long ride a week ago, so I assumed it worked.... It hadn't come on.. so I assumed it had at least another 20 miles left..   you know what they say about assuming...  Well you know...  You gatta laugh at your mistakes.. 

[Kiwi_Roy]

This is the usual fuel level sensor.
http://www.mgcycle.com/index.php?main_page=product_info&cPath=30&products_id=2474
They often get burnt out when owners get the wiring crossed with the electric petcock, later bikes had the connectors keyed.
When the tip is uncovered the lamp current warms the thermistor which causes it to drop in resistance until the lamp lights this takes time so if you expect the light to come on as soon as you turn the key, it's not going to happen. On the other hand if you get it mixed up with the petcock it will be ok as long as its under fuel but will get red hot and burn out in seconds if uncovered.

Measure the probes resistance, I can't recall at the moment what its supposed to be something like 3000 Ohms, it will be open if burnt out.
Check the light just by poking a wire in the socket, the lamp draws about 100 milliamps.

[MGrego]

This is the usual fuel level sensor.
http://www.mgcycle.com/index.php?main_page=product_info&cPath=30&products_id=2474
They often get burnt out when owners get the wiring crossed with the electric petcock, later bikes had the connectors keyed.
When the tip is uncovered the lamp current warms the thermistor which causes it to drop in resistance until the lamp lights this takes time so if you expect the light to come on as soon as you turn the key, it's not going to happen. On the other hand if you get it mixed up with the petcock it will be ok as long as its under fuel but will get red hot and burn out in seconds if uncovered.

Measure the probes resistance, I can't recall at the moment what its supposed to be something like 3000 Ohms, it will be open if burnt out.
Check the light just by poking a wire in the socket, the lamp draws about 100 milliamps.

I need to replace the fuel sensor thermistor on my '04 EV, anyone know of a reasonably priced replacement ?

[s1120]

This is the usual fuel level sensor.
http://www.mgcycle.com/index.php?main_page=product_info&cPath=30&products_id=2474
They often get burnt out when owners get the wiring crossed with the electric petcock, later bikes had the connectors keyed.
When the tip is uncovered the lamp current warms the thermistor which causes it to drop in resistance until the lamp lights this takes time so if you expect the light to come on as soon as you turn the key, it's not going to happen. On the other hand if you get it mixed up with the petcock it will be ok as long as its under fuel but will get red hot and burn out in seconds if uncovered.

Measure the probes resistance, I can't recall at the moment what its supposed to be something like 3000 Ohms, it will be open if burnt out.
Check the light just by poking a wire in the socket, the lamp draws about 100 milliamps.

Awesome thanks. At least I know now..  Im planning on pulling the tank during the off season to do some more maintaince, Ill check it out then.