Alternative refrigerant pressure sensor?

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teuski
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Joined: 01 Jan 2016, 07:30

Alternative refrigerant pressure sensor?

Post by teuski » 20 Jun 2016, 05:36

I need a new refrigernat pressure sensor for my '96 ph2 Safrane. I can't seem to find new ones, at least not for a reasonable price.
Since the AC system is pretty much the same in all cars, i suppose some other car's sensor would do the job if it fits physically.
I suppose the sensor operation and values are pretty much the same anyway.
Maybe some early Laguna/Megane sensor might fit, i don't know. All i know is that mk1 C5 sensor is different.

There is a valve that prevents the loss of refrigerant when the sensor is removed so the physical dimensions are important to open that valve.

A different kind of connector isn't a problem as long at has 3 wire and that it is actually a sensor, not just a switch.
The original sensor has following markings:
Valeo
652113F
24067766
21596 ?v

Some dimensions:
  • Opens with a 19mm key.
  • inside theres a 10mm coil finer than M10.
  • the sensor side opening is 11mm, the coil starts at 5mm depth
  • the distance from the end to the pin in the middle is 11mm, 13mm to the pin's "spokes"
  • outer diameter of the sensor side connector is 17mm

Any tips would be helpful :)

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Last edited by teuski on 20 Jun 2016, 08:33, edited 1 time in total.

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xantia_v6
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Re: Alternative refrigerant pressure sensor?

Post by xantia_v6 » 20 Jun 2016, 06:37

Are you sure that it is a sensor not a (trinary) switch? More than one supplier lists Renault part number 7701041413 as fitting the Safrane II, there seem to be several suppliers for that part.

This one looks rather similar: http://www.ebay.co.uk/itm/AIR-PRESSURE- ... SwstxVUwOK

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teuski
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Re: Alternative refrigerant pressure sensor?

Post by teuski » 20 Jun 2016, 08:45

I'm not really sure how a trinary switch should work, but this one gets +5VDC on one pin and earth on the other. By varying the 5 volts to the 3rd pin by means of a adjustable resistor the compressor clutch engages at certain point and the engine fans start and vary their speed according to the resistor.

Anyway thanks for the tip. I decided to try my luck and order such switch. The pics of the connector aren't that clear but looks like it wouldn't be the same.

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teuski
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Re: Alternative refrigerant pressure sensor?

Post by teuski » 01 Jul 2016, 07:45

This sensor for Dacia Duster works just fine :)