Oil Pressure - help please!

[FARKIT]

Hi Guys,

I've tried a search, as I'm sure this is a common thread, but the PH search isn't working, and I got bored after about page 20!

My oil pressure gauge is not registering at all - it was, and it's gradually shown less and less and now nothing....

I've just done an oil and filter change, and have also just tested the gauge (which is working).

So - next step, test the sender - am I right in saying that I should do this by registering the resistance it shows once the engine is running?

Any help and advice would be greatly appreciated!

[v8s4me]

If you've tried everything else and the engine is still running it's probaly the sender, so just buy a new one. They are not that expensive and easy to get hold of. It's what I did in the end after trying everything you have. It would have been much quicker and cheaper to start with the sender.

[FARKIT]

I think you're probably right!

Is he sender unit a standard item for the sierra 2.9V6?

[gizzardio]

I had exact same story after oil change try this? Worked for me in the v8 but think it'll be compatible with gauges in other models if they work on same resistance range. Just wire the earth terminal to suitable earth point with bit of spare wire.

http://www.ebay.co.uk/itm/370565950654?ssPageName=...

Worth a punt for less than £15 and 15 min job

[phillpot]

FARKIT said:

Is he sender unit a standard item for the sierra 2.9V6?

I don't think so, Granadas only had an oil light not a gauge so different switch/sender unit.

[FARKIT]

Thanks Gizzardio - I've just bought one - at that price it's worth a punt!

Will keep you posted...

[Scoobimax]

I'll be interested to see if this works - my gauge is a bit erratic and I've traced it to the sender unit but was told the sender and gauge have to pair and the chances of finding an after market matching sender were slim - I didn't/don't want to lose the TVR decal in my gauge by swapping both so I left it.

Be good to get a working gauge back.

[glenrobbo]

Scoobimax said:

I'll be interested to see if this works - my gauge is a bit erratic and I've traced it to the sender unit but was told the sender and gauge have to pair and the chances of finding an after market matching sender were slim - I didn't/don't want to lose the TVR decal in my gauge by swapping both so I left it.

Be good to get a working gauge back.

What he said.

[FARKIT]

Will let you know how it goes!

[phillpot]

Scoobimax said:

was told the sender and gauge have to pair and the chances of finding an after market matching sender were slim - I

Bunkum !

[Scoobimax]

phillpot said:

Scoobimax said:

was told the sender and gauge have to pair and the chances of finding an after market matching sender were slim - I

Bunkum !

Chees Mike - straight talking and to the point

[FARKIT]

Gentlemen - success!

I have just wired in the new sender, and the gauge is registering a healthy and constant oil pressure.

Many thanks to Gizzardio for the eBay link. £15 well spent, and it arrived the next day.

Very simple fit, have just run a new earth cable from the earth point under the battery, along a front cross member and round to the sender.

All in all, very happy!

Now just need to fit the new thermostat......

[phillpot]

FARKIT said:

run a new earth cable from the earth point under the battery, along a front cross member and round to the sender

There's a nearer one (on mine anyway), follow main chassis rail on same side as sender towards bulkhead, sort of above the starter motor

[FARKIT]

Good tip, thanks - I'll have a look!

[Scoobimax]

Thanks for the update - I see a rush on senders coming up :-)

Cheers.

Max

[glenrobbo]

That's great news, I'm ordering one first thing tomorrow.
I've got used to being happy as long as the gauge didn't drop below zero.
Be nice to have healthy readings for Spa trip.
Thanks Gizzardio & Farkit.
I love this forum & all the helpful peeps who contriobute.

[Scoobimax]

Ordered , :-)

[gizzardio]

Glad it worked for you mate. No one likes to see their oil press gauge flying about!

[FARKIT]

phillpot said:

There's a nearer one (on mine anyway), follow main chassis rail on same side as sender towards bulkhead, sort of above the starter motor

Just checked, and you're spot on, there's an earth point very close to the sender, it was hiding under part of the wiring loom!

[glenrobbo]

Oil pressure sender arrived today - v. quick delivery.
Fitted it this afternoon, very happy to see 65 psi on the gauge, never had that before. Spa here I come.
Thanks Guys.