Thread: My 2a freshen up

Originally Posted by gromit

The cold start light should stay off until the engine warms, if the choke is still operated the light comes on when the engine is warm to remind you to turn it off.
If the choke control is in and the light stays on when the motor is warm then the switch is still 'made' and possibly needs adjustment.

Disconnect the wires to the switch and put a meter across the switch terminals. It should be open circuit when the choke is pushed in and you should get continuity when the choke control is pulled out.


http://www.lrfaq.org/Series/images/SII+VE.jpg


Colin

Colin followed your instructions to the letter everything seems to make sense but still have permanant light on once motor is warm

choke inIMG_3310.jpg IMG_3318.jpg


Choke outIMG_3315.jpg IMG_3320.jpg


lever arm choke inIMG_3322.jpg lever arm choke outIMG_3323.jpg so far everything works correctly

noticed some damage to insulation spacer IMG_3321.jpg

so decided to test again with test lamp

choke inIMG_3325.jpg choke outIMG_3328.jpg

would seem damage to insulation isnt effecting anything

any advice kinda doesnt make sense........................is there a way of testing thermostat sender

Cheers Paul

When engine is cold the temp switch should be open circuit. When warmed up should be closed circuit.

Would that be testing from male spade terminal on thermostat to earth".......I'm not the brightest with electrical systems but slowly I'm learning

Thinking more about this I think I should be testing from terminal to wire that attaches to it
will have a go tomorrow

Cheers Paul

Power on the test light clamp, then point to spade terminal. Light should be out on cold engine. Light should turn on with motor warmed up. If the light is on on a cold engine the thermo switch is faulty...

Or with multi meter set to ohms check for resistance between spade terminal and earth. Open circuit for cold engine closed for warmed up engine. If its closed circuit on a cold engine the thermo switch is faulty.

Clear as mud...lol

Cheers Rod

Thanks Rod,,

Yep,,, clear as mud

Originally Posted by 67hardtop

When engine is cold the temp switch should be open circuit. When warmed up should be closed circuit.

Gday Rod
temp switch open circuit cold, also open circuit when warm 70c

Cactus sensor maybe😂😕
New sensor £60/70 plus freight, do I really need to know I've left the choke out when I haven't needed to use it yet.......hmmmm........think not.

Cheers Paul

A bit expensive for a sensor, here's a cheaper one 545010 - Water Temperature Switch but of course out of stock !
This side of the ditch https://www.allfourx4.com.au/545010

Could it be corrosion stopping an earth path from the sensor to the head ? A long shot but removing, cleaning & replacing with some conductive grease might get it working.....but if it's not important probably best to leave it alone.


Colin

PS. Just found a modern replacement Fan Switch Kit - Otter Switch Replacement - Fosseway PerformanceFosseway Performance

Yep as gromit says check the earths are clean before replacing it. They are a bugger to remove...