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700/900 Series General Forum for the Volvo 740, 760, 780, 940, 960 & S/V90 cars |
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960 reservoir float sensorViews : 521 Replies : 9Users Viewing This Thread : |
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Aug 9th, 2020, 20:15 | #1 |
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960 reservoir float sensor
hi all
i have a spare 960 coolant reservoir the one with the hole in the bottom that take the probe to the float sensor i see the the sensor has 2 wires with the male fit twin fitting can this be conectected into my standard coolant electrics some way to send a warning that the coolant level is low in my reservoir and possibly fit a sound sensor into the system any advice most welcome |
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Aug 9th, 2020, 21:37 | #2 |
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Just a little information addition both the 97 and 98 940 I have have the float in the coolant tank with the fitting in the bottom, so I believe all coolant tanks have the float and fitting it just needs the sensor.
There is most likely a plug next to the coolant reservoir on the black plastic sheathing for the looms that plugs in to a false socket, both the 97 and 98 940 have this which I believe is for the coolant level sensor. Last edited by 360beast; Aug 9th, 2020 at 23:40. |
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Aug 9th, 2020, 22:03 | #3 |
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coolant sensor
thanks luke
my car being a 1995 model diesel may have a different wiring set up as i have a tempreture sensor at the front of the engine its under the alternator so its a alternator off job that has 2 wires coming from it but must link up to the tempreture gauge which does not work my reg is M617WJO if you have access to any electric drawing you might be able to guide me regards jim |
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Aug 10th, 2020, 00:12 | #4 |
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The 940 never had the coolant level sensor fitted but the later 940s used the same coolant tank and instrument panel layout as the 960/S90/V90 that did.
There is an article here that takes you through the process of fitting one. I fitted one some years ago with parts sourced from another forum member and it saved the engine on a number of occasions when a hose split or heater valve failed etc. The easiest way is to use parts from a donor 960/S90/V90. You need the connector that attaches to the reed switch sensor in the tank, which has two wires. One is the ground which goes down to an earth block behind the O/S lights and the other goes to the back of the instrument cluster. You also need one of the crimped contacts extracted from an instrument panel connector (yours will have an empty bay) and a lamp and lamp holder for the warning light. With these parts it is a fairly easy, although fiddly, job to fit and the result is this when you turn the ignition on: If you shine a torch at your instrument panel you could probably see if it has the coolant lamp position (to the right of the ABS).
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Gavin 1997 945 CD (B230FK) [RIP: 1991 945 Turbo (B230FT) 1992 945 SE turbo (B200FT)] Last edited by gpl1968; Aug 10th, 2020 at 00:15. |
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Aug 10th, 2020, 00:19 | #5 |
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My 940 didn't have any wiring for the coolant lamp but it does have the alarm siren next to the coolant tank. If yours doesn't have the siren that may be the purpose for the spare connector.
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Gavin 1997 945 CD (B230FK) [RIP: 1991 945 Turbo (B230FT) 1992 945 SE turbo (B200FT)] |
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Aug 10th, 2020, 08:16 | #6 | |
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Not a clue what it is for then if it isn't for the sensor. Last edited by 360beast; Aug 10th, 2020 at 08:23. |
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Aug 10th, 2020, 21:24 | #7 | |
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Cheers
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1997 965 2.5 SE Manual 1996 944 Classic 2.3 LPT - SOLD/BROKEN/SCRAPPED 1997 S90 3.0 - SOLD to doingitsideways 2021 Škoda Octavia Estate L iV PHEV (Company) |
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Aug 11th, 2020, 19:36 | #8 |
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float sensor
thank you all for the input
got a bit of how to do this fix johnny90 there are the 2 wire float sensors on ebay i do have one its old with bared wires taped up but need to put a test on it can it be done with a multimeter and how? so 1 wire goes to earth thats ok .but the other goes somehow to the spare dash lamp or LOW screen wash light but how is it connected to the bulb or have i got things wrong sorry . pretty sure there are no wires in place to do this job but again i don't honestly know . regards jim |
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Aug 11th, 2020, 19:43 | #9 | |
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Now put one probe on each bare wire from the level switch, in the normal upright position of the tank you should get continuity with it empty. Now turn the tank upside down and retest - you shouldn't get continuity as this simulates the float being lifted by the coolant. If you can wrap the bare wire ends round your probe tips you can turn the tank upside down and back to the right way up to prove the float is moving and by doing this you should get an on-off-on response from the meter as you turn it from normal to upside down and back again. As for the wiring of the bulb, others have already started on that so rather than try and add to that which could cause confusion, i'll let them finish it. If they don't, give me a shout and i'll try to pick up where they left off.
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Aug 11th, 2020, 19:44 | #10 | |
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There’s a link further up the thread to a instructional thread. Well worth reading through and understanding what you need to do before you start work 👍 You’ll need to hardwire in the wire from the sensor to the back of the dials in the correct location and fit a bulb in the correct socket (from places I’ve mentioned previously). Cheers
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1997 965 2.5 SE Manual 1996 944 Classic 2.3 LPT - SOLD/BROKEN/SCRAPPED 1997 S90 3.0 - SOLD to doingitsideways 2021 Škoda Octavia Estate L iV PHEV (Company) |
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