2001 V70XC - Brake Pedal Sensor Replacement Topic is solved

[precopster]

Great now you can repair the old one and have a spare! !

[xHeart]

Great now you can repair the old one and have a spare! !

Somewhere you wrote Mike that this sensor is same in '97 850 and '01 V70XC.
I have twice as much to gain from its repair.

Lower gas prices, premium at $2.395 vs $4.693, have contributed to restoring cruise control, and now two new Bosch 02 sensors making it a delightful start of 2015.

Many thanks.

[precopster]

It's the same design as an 850 so you can use the same repair info however part number may be different due to a different reach on the plunger.

Sorry if I misled.

[jimmy57]

The sensors are the same. The plastic tip is selectively sized to compensate for dimensional differences of the boosters.
The tip should be moved to the new part.
I have never heard of any issues with out of spec sensors. I suppose if you had the shortest tip on a booster with the deepest depth to diaphragm then the brake light apply would precede the booster sensor signal enough to cause a code.

[cb92]

Hi replacing V70 brake servo height sensor.What happens if o ring is sucked inside housing? Can u get it out?and can u leave it in there and fit another one?

[firstv70volvo]

Hi replacing V70 brake servo height sensor.What happens if o ring is sucked inside housing? Can u get it out?and can u leave it in there and fit another one?

That's an unfortunate thing to happen but I can imagine how this happened, the brake booster retains vacuum and it got sucked in when removing the sensor. I've done this repair and I didn't do this but, based on what happened to you it's probably a good idea to pump the brake pedal with the engine off to release all the vacuum in the brake booster before removing the sensor.
I don't think it will hurt anything with the o-ring just sitting inside the booster vacuum chamber other than the possibility of the o-ring getting sucked into the vacuum hose but I don't this would ever happen, although I could be wrong.
It will be tricky ordering a new o-ring unless you can accurately measure the cross section and ID of the original o-ring. Would probably be best to get one from the salvage yard to measure and use this o-ring in the meantime until a new one can be ordered.