ever seen a stock oil pressure sender freak out? - Miata Turbo Forum

hustler · 02-08-2010, 06:12 PM

My 1.6 sender either reads 35-40psi below 2800rpm, or it pegs high from 3k+. I'm running 5w40 at 200* oil temps and its always pegged. Should I be worried? It's always pegged high but I think it showed lower pressures at 4500rpm than it does now.

gospeed81 · 02-08-2010, 06:42 PM

Mine's been doing very similar recently...

Bond · 02-08-2010, 06:48 PM

Thinner oil?

gospeed81 · 02-08-2010, 06:50 PM

+1

I'm running thicker oil since I'm burning it, and I was getting too low of pressure (or needle wavering with occasional drops) on my standard 5w30.

***Braineack*** · 02-08-2010, 06:55 PM

Quote:

Originally Posted by hustler

My 1.6 sender either reads 35-40psi below 2800rpm, or it pegs high from 3k+. I'm running 5w40 at 200* oil temps and its always pegged. Should I be worried? It's always pegged high but I think it showed lower pressures at 4500rpm than it does now.

mine had started reading low, like 15psi at idle or 90psi when cold. then when i swapped my block it completely failed, i had to replace it.

gospeed81 · 02-08-2010, 07:02 PM

Mine's also got a lot of frack going on as my motor self-destructs, so you may want to disregard my anecdotal evidence.

*this does not mean: have a panic attack about your motor dying

Mach929 · 02-08-2010, 07:05 PM

Quote:

Originally Posted by hustler

My 1.6 sender either reads 35-40psi below 2800rpm, or it pegs high from 3k+. I'm running 5w40 at 200* oil temps and its always pegged. Should I be worried? It's always pegged high but I think it showed lower pressures at 4500rpm than it does now.

surprised your car doesn't already have an aftermarker oil pressure sender and gauge

NA6C-Guy · 02-08-2010, 07:19 PM

I would think this would be electronic related, not the oil itself. Mine is pretty jumpy and erratic these days, but it's not the oil. It reads anything from 25-40 at idle and anything from 40-pegged at above 2500rpm. All the time it's jumping around. Started after the rebuild.

hustler · 02-09-2010, 09:48 AM

Quote:

Originally Posted by Mach929

surprised your car doesn't already have an aftermarker oil pressure sender and gauge

I doesn't need to be accurate like water or oil temp. However, I may have an Omori soon.

dc2696 · 02-09-2010, 02:13 PM

Mine was doing the same fr the last couple years, replacig it with aftermarket unit for sure

thesnowboarder · 02-09-2010, 02:38 PM

1. Get a real gauge
2. After throwing the same oil into my new motor, i am seeing 50psi at WOT 15 psi from 3000-7500
3. As long as you have pressure i wouldn't worry.
4. But seriously, get a real gauge

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