oil leaking from sensor - Saxperience

tommy35 · 17th February 2019, 14:09

I have an oil leak coming from a sensor under my saxo furio. You can see me pointing to it with a screw driver. It appears to be leaking from the plastic part

Here is a wider view, so you can see where the sensor is in relation to everything else

Presumably I will need a new sensor? Or can it be sealed with something? I don't want to spend too much on the car as I will be getting a new car real soon.

If it will need a new sensor, does anyone know the part number?

Many thanks
Tom

tommy35 · 17th February 2019, 17:07

After more examination, I wonder if this is the oil pressure switch as shown here
https://www.gsfcarparts.com/931pc0260

If it is the oil pressure switch, presumably I have to drain the oil before I change it?

aldred309uk · 17th February 2019, 17:33

My 1.1 desire has a leak there too, oil pressure switch. My old saxo had a leak there too. Garages charged me £15 parts and labour to replace. I don't believe you need to drain the oil as it should all drain to the sump if you let it sit for a short while first. I have a switch in my boot which I need to swap over. Going to do mine next week when I replace the front fog light, screen wash pump and all parts of the front suspension!

tommy35 · 17th February 2019, 18:37

Quote:

Originally Posted by aldred309uk

My 1.1 desire has a leak there too, oil pressure switch. My old saxo had a leak there too. Garages charged me £15 parts and labour to replace. I don't believe you need to drain the oil as it should all drain to the sump if you let it sit for a short while first. I have a switch in my boot which I need to swap over. Going to do mine next week when I replace the front fog light, screen wash pump and all parts of the front suspension!

thanks for confirming it is the oil pressure switch. Does anyone know the spanner size? I just tried 22mm and it seems a bit loose. I don't have a 21mm to try, but I guess it is probably 21mm - does anyone know?

aldred309uk · 17th February 2019, 20:40

Don't know the spanner size but I would like to know how big in the end as I will probably be tackling this job towards the end of the week.

tommy35 · 17th February 2019, 23:23

Quote:

Originally Posted by aldred309uk

Don't know the spanner size but I would like to know how big in the end as I will probably be tackling this job towards the end of the week.

I will let you know tomorrow. I think I am going to get my dremel and cut the sensor off. That way I can get a 6 point socket on there. I don't want to risk rounding anything with a spanner. I may also use a little heat / spray on oil to help things.

stevo67 · 18th February 2019, 09:31

You just need a deep socket mate,placed over the top.

tommy35 · 18th February 2019, 10:17

Quote:

Originally Posted by stevo67

You just need a deep socket mate,placed over the top.

My deep sockets are too deep, as with the ratchet on they end up fowling on the sensor on the bottom of the exhaust. There is not much clearance there. I am going to go out later this morning and cut/dremel the sensor off. I can then get a smaller socket on there.

tommy35 · 18th February 2019, 12:52

Quote:

Originally Posted by aldred309uk

Don't know the spanner size but I would like to know how big in the end as I will probably be tackling this job towards the end of the week.

I have now removed the sensor and can confirm it is 22mm. I used my dremel and cut the sensor off and then put a 22mm socket on there. You could try a deep socket, but as I say there is not much clearance. So probably easier just to cut it off, and then put a normal socket on there. With the dremel it took about 20 seconds.

You are best with a 22mm impact socket. I tried a normal 12 point halfrods socket but it started to round the corners. I then went to a 6 point impact socket and it gripped it well. I also used some freezing spray and sprayed plenty of dismantling oil in there. Due to the tight space, I used a 250mm socket extension with the 22mm socket.

Just going to the shop now to buy the sensor. With the discount code Euro car parts have them for about £3

tommy35 · 18th February 2019, 19:27

All sorted now and car is running with no leaks. The sensor with online discount was only £3.83 from Euro car parts.

aldred309uk · 19th February 2019, 06:07

Thanks for the information, I will try and throw my sensor on towards the end of this week!

aldred309uk · 21st February 2019, 17:35

Lost some oil when doing my sensor today because I didn't realise it was at the base of the oil filter!

tommy35 · 21st February 2019, 20:17

Quote:

Originally Posted by aldred309uk

Lost some oil when doing my sensor today because I didn't realise it was at the base of the oil filter!

I also lost a little but, but only about half a pint. Did you loose much?

How did the job go, did the sensor come out okay?

aldred309uk · 21st February 2019, 22:29

Quote:

Originally Posted by tommy35

I also lost a little but, but only about half a pint. Did you loose much?

How did the job go, did the sensor come out okay?

Sensor came out really easily. A lot of brake cleaner was used in the area. Was just one of many jobs I did on the car today and it feels like a new car again, brakes steers and drives brilliantly!