Technical A/C Problem

[Aurimas1992]

The pump starts and stops after 3~ seconds. I was filling up with full freon but the situation was the same. Before fixing a clutch or pump I would like to check the pressure sensor, maybe is there anyone who knows where I can find it? Thank you very much

 

[Davren]

Hi, Welcome to the FF.

The pressure sensor is in the engine compartment, low down on the right side of the car, close to the A/c condenser and engine radiator.
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[Aurimas1992]

Hi and thank you, i found it.

I test it, there is 3 wires . When i connect 1-2 the fan starts blow. When i connect 1-3 there nothing happens clutch wont spinning.

Then i test a clutch connected directly to battery on running engine. Clutch is ok its spinning. I test oms whit shows 4,5 as i know its ok.

I check a relay. Its ok.

I don't know what more to check


P.s i fixed lot of problems whit my stilo by your forum !

 

[Aurimas1992]

Hi and thank you, i found it.

I test it, there is 3 wires . When i connect 1-2 the fan starts blow. When i connect 1-3 there nothing happens clutch wont spinning.

Then i test a clutch connected directly to battery on running engine. Clutch is ok its spinning. I test oms whit shows 4,5 as i know its ok.

I check a relay. Its ok.

I don't know what more to check


P.s i fixed lot of problems whit my stilo by your forum !

I check everything from fiatforum /stilo/111246-air-conditioning-works-intermittently

All relays are ok, all fuses are ok. Fuse box is clean no corrosion or oxidation.
No check engine light.

The strange thing is that when i try to bypass a pressure sensor by connecting wires. When i connect 1-2. Fan starts to blow presure to high compressor don't need to work. But when i connect 1-3 it should get a signal that pressure is to low and compressor should to start ??