How to remove boost sensor on 3.0 CDTi

**Celes** · 9th August 2009, 23:14

The manifold is off now and I was thinking I could give the boost sensor a brake cleaner squirt. Trouble is the screws holding the sensor are SO TIGHT I can't take it out

I have tried some anti-rust thing lol but it still won't work

Help me please

**diesel dog** · 10th August 2009, 08:36

The boost sensor being the little black box that's fastened to the manifold by two bolt/screws ?

**Celes** · 10th August 2009, 12:01

Originally Posted by diesel dog

The boost sensor being the little black box that's fastened to the manifold by two bolt/screws ?

YES!

They won't budge...

**steve** · 10th August 2009, 12:08

Possibly try a longer bar on your ratchet handle help the leverage.

**Penfold101** · 10th August 2009, 13:06

Soak in WD40 for several hours and get more leverage as above. However, be awar of shearing the bolts and the problems that could cause...

**Celes** · 10th August 2009, 13:26

Originally Posted by Penfold101

However, be awar of shearing the bolts and the problems that could cause...

They are a bit ruined already

**Penfold101** · 10th August 2009, 13:27

Quit while you're ahead....?

**diesel dog** · 10th August 2009, 17:46

The ones on mine were really easy,but it had previously been changed for another new one a couple of years ago,along with the turbo,which didn't actually need replacing,but still..I'm not complaining when it's for nowt.

**Celes** · 10th August 2009, 21:13

I guess I'll leave it as it is.
Better like this then a spanner light lol

**Big Sig** · 11th August 2009, 00:56

Only other thing to do is drill the heads off, remove the valve and try to get some mole grips on them hoping they will come out. Knowing where it is and how hard it is to get to I think I would leave it there.