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S80 '98-'06 / S60 '00-'09 / V70 & XC70 '00-'07 General Forum for the P2-platform S60 / V70 / XC70 / S80 models |
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Brake Pressure SensorsViews : 13502 Replies : 56Users Viewing This Thread : |
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Aug 16th, 2019, 19:21 | #31 | |
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just swap the plugs over if the same reading but different sensor then sensor fault. They should be close to 0 on both sensors and the same when brake pedal is pressed so approx 120 bar max is 180 i think
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Last edited by harveys; Aug 16th, 2019 at 19:43. |
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Aug 17th, 2019, 13:29 | #33 |
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Ive plugged vida nad found the following results.
Could you please guide me which one is faulty. Thank you. Both sensor plugged in without brake pressed Sensor 1. +10.56 Sensor 2. -.91 Then Both sensor swapped without brake pedal pressed. Sensor 1 -.91 Sensor 2 +9.49 Then I removed the Left side sensor (when facing the car from front) (closer to engine side). I call this sensor as Sensor- 1. The other Sensor which is on right side (when facing the car from front) closer to battery terminal – near side – I call them as Sensor- 2. The reading after removing left side Sensor- 1 without brake pedal pressed is Sensor 1. -.91 Sensor 2. -20.67 And with brake pedal pressed Sensor 1. 44.98 Sensor 2. 33.93 The reading after Right side sensor- 2 removed (closer to battery terminal) Without brake pedal pressed Sensor 1 -20.88 Sensor 2. +9.92 With brakes pressed Sensor 1. -20.67 Sensor 2. +46.62
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Volvo Xc90 D5 2005 Euro 3 D5244T- Auto. Volvo V40 D2 2016 cross country Engine D4204T8. Last edited by sreviz; Aug 17th, 2019 at 15:37. |
Aug 17th, 2019, 15:11 | #34 | |
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Aug 17th, 2019, 17:57 | #35 |
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Sorry. Bit confused.
After swapping the sensors wiring , Ive come to conclusion that one of the sensor is faulty. But to decide which one is faulty is a bit tricky for me. If some one could please help me with what reading the sensors should produce if one of the sensor is removed and vice versa. That will be much helpful for me and for future. Thank you.
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Volvo Xc90 D5 2005 Euro 3 D5244T- Auto. Volvo V40 D2 2016 cross country Engine D4204T8. |
Aug 17th, 2019, 19:26 | #36 | |
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Aug 18th, 2019, 09:20 | #37 | |
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If removed one you will now need to bleed the brakes. Yes Volvo want close to £275 for one but you can get them for £110 Genuine Volvo part .from Skandix part no 1027602 which comes in a Volvo bag with a volvo sticker and part no 30793669 . But put cars info in on the site parts finder.
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Aug 18th, 2019, 10:22 | #38 | |
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In my long experience doing this job you don't need to bleed the brakes if you are quick as a small amount of fluid runs out down from the reservoir which means the air can't get in ...
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Aug 18th, 2019, 10:53 | #39 |
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Thanks Clan. I've ordered one from breakers.
*Meanwhile I want to be more clear to find out which one is faulty* to reduce the hassle of doing it twice. I Removed Left sensor and the reading* are With out brake pedal pressed Left side* -20.67****** Right side sensor -0.91 With* brake pedal pressed Left side* -20.67***** Right side sensor +50.29 Removed Right sensor and the reading* are With out brake pedal pressed Left side*** +11.56**** Right side sensor -20.67 With* brake pedal pressed Left side*** +60.49*** Right side sensor* -20.67 Hope this is much clear reading to understand and.some ine shed some light. Thank you.
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Volvo Xc90 D5 2005 Euro 3 D5244T- Auto. Volvo V40 D2 2016 cross country Engine D4204T8. |
Aug 18th, 2019, 11:24 | #40 | |
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The readings have always been a bit confusing , You would expect when your foot is off the brake both would read zero but even on a working system with no faults this is not the case. The actual pressures are not that important , what is important is that both pressures are similar when pressed within a certain range ... just change one and see how it goes , if it is still faulty put the one you took off on the other one ...It is all quite easy ..
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