|
700/900 Series General Forum for the Volvo 740, 760, 780, 940, 960 & S/V90 cars |
Information |
|
coolant expansion tank level sensorViews : 1731 Replies : 33Users Viewing This Thread : |
|
Thread Tools | Display Modes |
Feb 13th, 2020, 16:06 | #1 |
Senior Member
Last Online: Oct 5th, 2022 10:52
Join Date: May 2009
Location: Preesall, Lancashire
|
coolant expansion tank level sensor
Hi, I have a coolant level sensor in my 940 expansion tank, it is shorting out in the tank, falsely, as I am not losing coolant, does anyone know if they can be repaired or replaced?
Thanks |
The Following User Says Thank You to globetrotter For This Useful Post: |
Feb 13th, 2020, 16:44 | #2 |
Premier Member
Last Online: Mar 4th, 2024 00:49
Join Date: Jul 2009
Location: Holywood
|
Never seen such a thing. I have one in my washer bottle though.
What model + year? |
Feb 13th, 2020, 17:11 | #3 | |
Senior Member
Last Online: Oct 5th, 2022 10:52
Join Date: May 2009
Location: Preesall, Lancashire
|
Quote:
Cheers / Steve |
|
The Following 3 Users Say Thank You to globetrotter For This Useful Post: |
Feb 13th, 2020, 17:23 | #4 | |
Senior Member
Last Online: Oct 5th, 2022 10:52
Join Date: May 2009
Location: Preesall, Lancashire
|
Quote:
LOL |
|
Feb 13th, 2020, 18:26 | #5 |
VOC Member
Last Online: Feb 15th, 2024 18:04
Join Date: Dec 2006
Location: stoke on trent
|
coolant sensor
how big a job is it to wire coolant sensor up as i have no temperature gauge working where do you take wiring to and from ?
|
Feb 13th, 2020, 22:33 | #6 | |
Premier Member
Last Online: Today 13:32
Join Date: May 2012
Location: Lakenheath
|
Quote:
It only warns of low level though, no temperature function. It's difficult to see where it is on this pic but it's on the bottom of the tank : Just to the right of the PAS reservoir on the tank there's a bulge, that's where the float switch/sensor in the coolant tank is.
__________________
Cheers Dave Next Door to Top-Gun with a Honda CR-V & S Type Jag Volvo gone but not forgotten........ |
|
The Following User Says Thank You to Laird Scooby For This Useful Post: |
Feb 14th, 2020, 13:10 | #7 |
Master Member
Last Online: Today 15:00
Join Date: Feb 2006
Location: Amersfoort (NL)
|
Screen washer sensor wiring
For my '98 940LPT I found the screen washer level sensor quite pointless, so I used the wiring for that sensor to connect it to the sensor in the coolant expansion tank (3547710). I put in a new tank complete with this switch fitted, simply took the connector off from the screen washer tank and connected the wiring to the coolant level switch. On low coolant level my orange "screen washer level low" indicator now lights up.
Recently I had the instrument panel out and moved the screen washer indicator wire from connector B pos.10 to connector C pos.10. I now get a red indicator with a radiator symbol lighting up (originally for high engine temp. indicator that is not fitted). |
The Following 7 Users Say Thank You to Rversteeg For This Useful Post: |
Feb 14th, 2020, 18:58 | #8 |
VOC Member
Last Online: Feb 15th, 2024 18:04
Join Date: Dec 2006
Location: stoke on trent
|
RVERSTEEG that could be a option for me if i can get my head round it ive got a spare tank that has a float in it but woud need to buy a sensor . i have not seen the washer bottle sensor i think ive seen 2 power supplies to the washer pumps
was wondering where the washer top up sensor is .? |
The Following 2 Users Say Thank You to jpliddy For This Useful Post: |
Feb 14th, 2020, 19:05 | #9 |
VOC Member
|
The reed switch sensor just clips into the bottom of the expansion tank. It never gets wet as there is a magnet in the float inside the tank. It's easy to replace, just pull it out from the base.
It is a valuable modification to make to your 940 as it has saved my engine a few times when a coolant hose/heater control valve failed. The light coming is a scary thing. There is an guide in the articles section on the mod that I used to fit the sensor on my car: Linky The rectangular expansion tank should already have the float inside. I sourced the reed switch and relevant loom wires from another forum member that was scrapping an S90 (V90 also had them).
__________________
Gavin 1997 945 CD (B230FK) [RIP: 1991 945 Turbo (B230FT) 1992 945 SE turbo (B200FT)] |
The Following 3 Users Say Thank You to gpl1968 For This Useful Post: |
Mar 31st, 2020, 18:26 | #10 |
Master Member
Last Online: Mar 25th, 2024 19:11
Join Date: Mar 2017
Location: Burgess Hill
|
Low Coolant level light
I replaced the coolant tank on my celebration with one from a vehicle which had the exact same tank but containing the sensor.
Instead of messing about with the dash warning light I simply bought a blue warning light and fitted it into a spare switch blank. Much less mucking about, and it has warned me a couple of times that the coolant level is low. Winner all round |
The Following 2 Users Say Thank You to 940volvoman For This Useful Post: |
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
Thread Tools | |
Display Modes | |
|
|