Oil pressure testing

Oil pressure testing

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Discussion

Mezzell

Original Poster:

107 posts

11 months

Thursday 18th June
quotequote all
Hello again!
I was wondering if there was anyone local(ish) to me who had the equipment to test oil pressure either electronically or mechanically?
I’m in East Sussex just 12 miles south of Gatwick.

leigh1050

2,091 posts

121 months

Thursday 18th June
quotequote all
I would have thought that any good local garage should be able to do this.
If you don't mind a little drive Neil at N.W.J autocare might be worth a try he works on quite a few VXR8's and Monaros.

leigh1050

2,091 posts

121 months

Friday 19th June
quotequote all
I was at Neil's today and he sai9d that testing oil pressure on LS engines is a piece of piss!

Mezzell

Original Poster:

107 posts

11 months

Friday 19th June
quotequote all
leigh1050 said:
I was at Neil's today and he sai9d that testing oil pressure on LS engines is a piece of piss!
Had mine done today through a local garage that had ‘tech 2’ diagnostics.
It’s all fine and my wayward gauge readings are through to a faulty sender that I’ve now ordered off eBay.
Worries over! Thank god!

stevieturbo

14,880 posts

203 months

Friday 19th June
quotequote all
Mezzell said:
Had mine done today through a local garage that had ‘tech 2’ diagnostics.
It’s all fine and my wayward gauge readings are through to a faulty sender that I’ve now ordered off eBay.
Worries over! Thank god!
tech 2 can only read oil pressure from that very same sender.

So did they confirm via another source that oil pressure was ok ?

Mezzell

Original Poster:

107 posts

11 months

Friday 19th June
quotequote all
stevieturbo said:
Mezzell said:
Had mine done today through a local garage that had ‘tech 2’ diagnostics.
It’s all fine and my wayward gauge readings are through to a faulty sender that I’ve now ordered off eBay.
Worries over! Thank god!
tech 2 can only read oil pressure from that very same sender.

So did they confirm via another source that oil pressure was ok ?
Tech 2 reads oil pressure from the oem sender. It was my aftermarket gauge that was giving a low reading.

wormus

11,640 posts

159 months

Saturday 20th June
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Sorry for the thread hijack - has anyone relocated their oil pressure sensor? I nearly died the other day when my "check engine oil" message came on, scan gauge confirmed I had 8psi oil pressure whilst cruising at 2k rpm. Normal panic ensued but long story short, the sensor has packed up. I know this as it reads +5v/130psi with the engine off. Works OK when cold and at idle I'm seeing 47 psi, no funny knocks or noises from the engine.either. Everything goes wrong when the engine is hot at the readings jump about wildly.

Problem is I'm pretty sure the supercharger needs to come off to get to it as it's only a few mm from the firewall. I was wondering if anyone had relocated theirs to somewhere more sensible?


Mezzell

Original Poster:

107 posts

11 months

Saturday 20th June
quotequote all
From posts I’ve read on this subject (which is a few!) the s/c does need to be removed to gain access. I’ve heard of people having them near the filter but not the case with my car. The oem switch and the aftermarket one are adjacent. I’ve ordered a new aftermarket one and I’m not looking forward to fitting it!!

Boosted LS1

19,122 posts

216 months

Saturday 20th June
quotequote all
There's a plug on the side of the block just after the oil pump exit into the block gallery that can be used if accessible. Some blocks will take an adaptor above the conventional filter location.

wormus

11,640 posts

159 months

Saturday 20th June
quotequote all
Boosted LS1 said:
There's a plug on the side of the block just after the oil pump exit into the block gallery that can be used if accessible. Some blocks will take an adaptor above the conventional filter location.
Yes, been thinking of this as an alternative solution:

Take this off



And fit one of these:


https://www.summitracing.com/parts/irp-egm-107

Probably cheaper and if it goes again, easy to swap out. Just leave the old, knackered sensor where it is.

stevieturbo

14,880 posts

203 months

Saturday 20th June
quotequote all
wormus said:
Sorry for the thread hijack - has anyone relocated their oil pressure sensor? I nearly died the other day when my "check engine oil" message came on, scan gauge confirmed I had 8psi oil pressure whilst cruising at 2k rpm. Normal panic ensued but long story short, the sensor has packed up. I know this as it reads +5v/130psi with the engine off. Works OK when cold and at idle I'm seeing 47 psi, no funny knocks or noises from the engine.either. Everything goes wrong when the engine is hot at the readings jump about wildly.

Problem is I'm pretty sure the supercharger needs to come off to get to it as it's only a few mm from the firewall. I was wondering if anyone had relocated theirs to somewhere more sensible?
The main gallery is the most sensible place.

At a push, remote mount it on a piece of hose, although you may need to get someone to make up a little adapter back to a female metric thread to screw the sensor in, as it wouldnt be an off the shelf thing.
Easy done though.

Seems it's M16x1.5. Or in steel buy an M16 nut and weld a -4 fitting to it to allow a hose to be attached. And get an adapter for the block.

Simplez

maccavvy

553 posts

120 months

Saturday 20th June
quotequote all
i drilled and tapped the cover next to the oil filter takes a 1/8 npt a treat been in 4 years no issues

wormus

11,640 posts

159 months

Saturday 20th June
quotequote all
maccavvy said:
i drilled and tapped the cover next to the oil filter takes a 1/8 npt a treat been in 4 years no issues
Sounds good. I’ve just bought the thing above ^ from Summit. Might even buy a manual gauge to fit in the engine bay for the next time paranoia sets in.

H5V VE

591 posts

159 months

Saturday 20th June
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On an s/c LS2 VXR8, its certainly possible to replace without removing the s/c because Monkfish did it for me.

That said, I think that they fabricated something to make it possible.

YME

59 posts

105 months

Sunday 21st June
quotequote all
Hi,
Also SC'd and am on my 4th sensor thats also defective (top of the dial when ignition turned on but down to zero when throttle lifted above 3k ish). The problem with alternative locations is that the faulty sensors seem to leak into its circuit board and then past the plug / drips down the gearbox etc. This is not much oil loss but i dont think leaving the old one in place is a good option.

Can I ask what the summit part is?, as if i have the remove the SC again to remove the broken one, I would like an alternative / perhaps remote pipe or bent tube to make it accessible the NEXT time.

Thanks

wormus

11,640 posts

159 months

Sunday 21st June
quotequote all
YME said:
Hi,
Also SC'd and am on my 4th sensor thats also defective (top of the dial when ignition turned on but down to zero when throttle lifted above 3k ish). The problem with alternative locations is that the faulty sensors seem to leak into its circuit board and then past the plug / drips down the gearbox etc. This is not much oil loss but i dont think leaving the old one in place is a good option.

Can I ask what the summit part is?, as if i have the remove the SC again to remove the broken one, I would like an alternative / perhaps remote pipe or bent tube to make it accessible the NEXT time.

Thanks
See the pictures above - there's a blanking plate on the side of the oil pan/sump, just above the oil filter housing. The idea is, you remove this and bolt the adapter in its place. This has 2 ports that can be used as an oil supply (e.g. for a turbo oil line), I plan to use one of these ports for the new sensor. I don't think leaving the old sensor in place will do any harm, it'll be unplugged and all it's doing is filling the hole.

The oil is at around 50 psi so I don't think turning it sideways will make any difference as gravity doesn't really come into it.

stevieturbo

14,880 posts

203 months

Sunday 21st June
quotequote all
wormus said:
Sounds good. I’ve just bought the thing above ^ from Summit. Might even buy a manual gauge to fit in the engine bay for the next time paranoia sets in.
OEM sensor ain't gonna screw into that adaptor....so not a lot of use.

wormus

11,640 posts

159 months

Sunday 21st June
quotequote all
stevieturbo said:
OEM sensor ain't gonna screw into that adaptor....so not a lot of use.
That's as maybe, problem is, I'm pretty sure I cannot fit something like this

https://www.ebay.com/itm/C5-Corvette-Oil-Pressure-...



because the supercharger drive belt will be the way.So this....



will interfere with this:



there'a about 3 mm clearance between the belt and the firewall so I'm sure the flexi hose option is a non starter.










stevieturbo

14,880 posts

203 months

Sunday 21st June
quotequote all
The flexi hose is smaller than the OEM sensor. I don't see why it would pose any difficulty.

The image of the blower you sow, shows the belt sitting very far forward on the engine. A hose from the sensor location would not be any issue.

wormus

11,640 posts

159 months

Sunday 21st June
quotequote all
stevieturbo said:
The flexi hose is smaller than the OEM sensor. I don't see why it would pose any difficulty.

The image of the blower you sow, shows the belt sitting very far forward on the engine. A hose from the sensor location would not be any issue.
That's not mine, I'm just being lazy using internet images. There's only about 3mm clearance on mine between the belt and the firewall and the sensor is underneath the drive belt, hence the blower needing to come off to change it. A flexi hose won't work as there's not enough room.

I just need to find a AN12 male to m16x1.5 female adapter to use the gadget I've just bought.




Edited by wormus on Sunday 21st June 18:18