Reply With QuoteWhat pressures are you seeing?
need NA oil pressure sender
nevermind, found an inexpensive used one thru a guy who does a lot of Spec Miata work
thanks for the info
Last edited by nealb; 02-24-2007 at 02:36 PM.
2009 MX-5 STR and track toy
2003 Z06 -- Not a Miata, but 3200# and 400 RWHP is fun
OTM -- 2012 Sierra, 2016 Impala (Appliances)
What pressures are you seeing?
5 to 10 at hot idle
about 30 at 3000 rpm or so
motor "only" has 123k and runs fine
2009 MX-5 STR and track toy
2003 Z06 -- Not a Miata, but 3200# and 400 RWHP is fun
OTM -- 2012 Sierra, 2016 Impala (Appliances)
Recent oil change?
Fram filters have been known to do that.
Daily Driver: 2013 Club edition in Pearl White Mica
Lightness? What's that? I drive a PRHT!
Yep... that is low. Have you done an oil and filter change since first noticing it? I have seen significant differences in pressure when using different brands of filters... perhaps a bad filter would cause the really low reading?Originally Posted by nealb
For reference, I have a '92 with 123k miles, OEM filter, and Mobil 1 5w-30. I see 25-30 at hot idle, and around 45-50 at 3k.
no haven't changed oil
thinking of trying a WIX filter (have used them for years on other cars) and maybe 20-50
but don't think that will make any difference
2009 MX-5 STR and track toy
2003 Z06 -- Not a Miata, but 3200# and 400 RWHP is fun
OTM -- 2012 Sierra, 2016 Impala (Appliances)
92 58k miles, 626 wix filter, and a mix of greddy turbo oil and mobile 1. i see 30 - 32 hot idle and 50 - 55 at 3000rpm
That's what I used to see but after getting my motor back from John Day, my oil psi is normally around 15 at hot idle and only 30-40 max at 3k rpm when hot. Around 30 cold idle and 60 at 3k rpm when cold. I understand the oil sending units were not always calibrated the same making different Miatas read different but not the same unit changing after rebuild.Still using the same oil and such.
90 MX5 281k miles! - euro spec, Porsche Riviera Blue w/black hardtop, 97 motor swap, vintage Borbet rims, GC, FM shock hats/frame rails/rear sub-brace, AGX, sway bar, stb, Fidanza/ACT combo, EBC Yellows
92 COMMA SM - new paint coming soon...
Just an FYI
my 93 had very low oil pressure -- 5 or so at idle, maybe 30 at high revs
changed out sender and no change
installed mechanical gauge and it reads well within Mazda normal specs
dash gauge bad
2009 MX-5 STR and track toy
2003 Z06 -- Not a Miata, but 3200# and 400 RWHP is fun
OTM -- 2012 Sierra, 2016 Impala (Appliances)
Does that mean you have an extra, working sender? Cheap?Just an FYI
my 93 had very low oil pressure -- 5 or so at idle, maybe 30 at high revs
changed out sender and no change
installed mechanical gauge and it reads well within Mazda normal specs
dash gauge badYou have PM
Mine has died on me - verified the gauge works and the car has correct oil pressure on a manual gauge.
'96 M-edition
You guys are lucky, my 96 has the stupid telltale. Only know of pressure problem after piston has gone into orbit.
me too...
'96 M-edition
I bought a 94 car! no retro-fit needed.
1994 R-package - gone, but not forgotten.
1966 Toyota Land Cruiser FJ40. Restification in progress. or should I say De-RUSTification in progress?
1984 Honda VF1100S. V4 Fury!
It has been on the list, just been putting it off because of the start of this season I needed so much crap.
lol... i'll check the oil sender after i replace my oil pump, couple of seals and random oil parts...
10/30/06 - 93' black primered MX5 1.6L
Wiseco Pistons 9:1, Carrillo Rods, ARP head and main bolts, FM valves +1mm and stiffer springs, new lifters, main bearings, cometic head gasket, port and polish head, ready for boost....
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