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Gtr Low Oil Presure

enzan

By enzan,
in General Maintenance

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enzan Explorer

enzan

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Hey, Just wanted to fill you in on a small problem that I encountered the other day. Cruising along the highway on my way to work I glanced down at my standard GTR oil presure gauge and freaked when I saw that it was just 2kg at 3500rpm. I was stuck at work and left wondering all day about all the possibilities of what could be causing the low oil pressure. I spoke to someone at Advan and was told that the standard GTR sender units give a lot of trouble and can't really be trusted and also that the N1 oil pumps have a habit of breaking the gear. So as soon as work finished I was under the bonnet attemptng to check my oil presure. I disconnected the sender unit wiring plug and noticed a bit of corrosion around the connector terminals. I cleaned off the corrosion, reconnected the sender and started the car, straight away the oil presure shot up to around 3kg at idle!! And at 3500rpm sits around the 6 - 7kg mark. They are fitted with a rubber boot over the sender plug but in my case was not fitted properly, causing the corosion.

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https://www.sau.com.au/forums/topic/156526-gtr-low-oil-presure/
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enzan Explorer

enzan

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2kg (no lower) is ok at idle when the engine is at operating temp, but even then as you increase the revs the oil presure should increase too. If yours doesn't move at all then at a guess I'd say that you have a problem with the sender unit. It's located next to the oil filter and is fairly easy to access. Unplug the wiring at the back of the sender, give the terminals a clean with contact cleaner (solvent) and give it a try. If that fails then I'd be checking the oil presure with a workshop type gauge and if that checks out ok, then another sender unit or an aftermarket sender and gauge. :)

  • 2 years later...
Chris_GTR26 Rising Star

Chris_GTR26

Posted
Posted
Hey, Just wanted to fill you in on a small problem that I encountered the other day. Cruising along the highway on my way to work I glanced down at my standard GTR oil presure gauge and freaked when I saw that it was just 2kg at 3500rpm. I was stuck at work and left wondering all day about all the possibilities of what could be causing the low oil pressure. I spoke to someone at Advan and was told that the standard GTR sender units give a lot of trouble and can't really be trusted and also that the N1 oil pumps have a habit of breaking the gear. So as soon as work finished I was under the bonnet attemptng to check my oil presure. I disconnected the sender unit wiring plug and noticed a bit of corrosion around the connector terminals. I cleaned off the corrosion, reconnected the sender and started the car, straight away the oil presure shot up to around 3kg at idle!! And at 3500rpm sits around the 6 - 7kg mark. They are fitted with a rubber boot over the sender plug but in my case was not fitted properly, causing the corosion.

the n1 oil pumps are strong.. its the standard oil pumps that tend to brake the gears

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