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Jeebs

Member Since: 23 Oct 2015
Location: North West
Posts: 197

1995 Defender 90 300 Tdi HT Barolo Black

Oil Pressure

Recently done some work on my Landy (300tdi) in the form of timing belt and a full service which it was in desperate need of.

Having taken it to wales (covered probably 400-500 miles) over the weekend I have noticed that my oil pressure light is staying illuminated for a few seconds on the first start of the engine.

I have checked the oil and it’s full, no signs of massive leaks apart from the usual drips from the sump plug etc.

My thinking is, the pressure switch is faulty, or the idle has been backed off a little bit by the bumpy welsh roads.

The only issue I have really is that the turbo is a bit noisy and has a little play in it. It’s passing a bit of oil but nothing excessive and the exhaust manifold gasket is in need of a replacement.

Any ideas or thoughts would be appreciated.

22nd Jul 2019 8:54pm

Blackhat90

Member Since: 31 Dec 2016
Location: Forfar
Posts: 86

Get a presure gauge on it to be shure, ,could be the switch, But,,, Mines sits a 45 psi , cold, ,and its done moon miles,

22nd Jul 2019 10:31pm

Jeebs

Member Since: 23 Oct 2015
Location: North West
Posts: 197

So I’ve swapped the switch

Old:

Click image to enlarge

New:

Click image to enlarge

The new one is a different style to the old one, and I can’t get it to screw in any further than it already has.

Is this an issue? Should it be flush like the old one was?

Could do with a smaller adjustable spanner as it’s quite tight under there to see if that will help.

Oil light is still illuminated for a few seconds on first start up, before flicking off. It doesn’t come back on at all when driving.

On second start up it flicks off almost immediately.

There are no obvious leaks anywhere bar the sump plug weeping slightly.

Any further recommendations?

28th Jul 2019 1:17pm

Retroanaconda

Member Since: 04 Jan 2012
Location: Scotland
Posts: 2690

The oil light being on for a few seconds after first starting is quite normal. Every Tdi I’ve driven has done it.

28th Jul 2019 2:53pm

jfh

Member Since: 08 Jan 2014
Location: West Coast
Posts: 363

2007 Defender 110 300 Tdi SW Chawton White

Jeebs wrote:

There are no obvious leaks anywhere bar the sump plug weeping slightly.

Any further recommendations?

I had the same issue, I now use a light duty Locktite (small screws). Works perfectly and the sump plug comes out without a struggle.

28th Jul 2019 3:35pm

Mo Murphy

Member Since: 01 Jun 2008
Location: Letchworth Garden City, Herts
Posts: 2273

1984 Defender 90 BMW M57 3.0 Diesel HT Auto Pennine Grey

^^^ what retro said.
Mo The Land Rover 90 - Many are called, few are chosen.

50 Shades of Pennine Grey

28th Jul 2019 4:09pm

Jeebs

Member Since: 23 Oct 2015
Location: North West
Posts: 197

I also noticed that the oil filter was slightly loose, so I’ve tightened that up, but it needs a good tightening up tomorrow.

28th Jul 2019 6:54pm

jfh

Member Since: 08 Jan 2014
Location: West Coast
Posts: 363

I've had 2 instances where the oil filter was a quarter turn loose, especially after bad dirt roads.

Now mine is wire locked when I service her.

28th Jul 2019 7:15pm

Jeebs

Member Since: 23 Oct 2015
Location: North West
Posts: 197

I’ve got my exhaust manifold gasket to do tomorrow, so I’ll give it a good turn while I’m all dirty from that 😄

28th Jul 2019 7:28pm

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