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Author
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Topic: Low Oil pressure? Why.....
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OneBadHatch
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Member # 970
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posted
 
 
stays at very bottom of tach and when i push clutch in it drops all the way to red...my only guess is the oil filter but i dont really know...anyone have any ideas
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1990 GT
TFS Intake and Cam
AFR 165's
Plus all the goodies
Posts: 834 | From: Oceanside, CA | Registered: Mar 2002
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MR GO FAST
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Member # 2088
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posted
have you recently changed the oil? what weight did you have and what weight did you replace with? how many miles on motor?
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1986 Gt that is faster than FOSTANGS pinto
Posts: 3729 | From: ATWATER/SANJO/RWC | Registered: Nov 2002
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93PONY
Mr. Valve Events
Member # 60
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posted
Get a manual Oil pressure guage on there. If you really do have low oil pressure.....there's only one thing that causes that. The main bearings are going south.
If you actually do have good oil pressure on the manual guage, get a new sending unit.
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www.advancedenginedevelopment.com
SCT dealer
Dynotuning
(916)715-7569
Posts: 4266 | From: Fair Oaks, CA | Registered: Nov 2000
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white1990stang
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Member # 2307
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posted
yeah change the sending unit. i;ve had 2 go out on me.
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You must be fast, cause I was haullin ass when I passed you.
Posts: 1308 | From: martinez | Registered: Jan 2003
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JoeT
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Member # 298
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posted
there are tons of reasons for low oil pressure other than worn main bearings,
it can include:
worn rod bearings/journals, crank journals, the oil pump itself (whether clogged, it's tolerances out of spec, or it's pressure regulator)
low oil
and as mentioned a faulty sender
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1984 Ford Tempo AOD--- RIP
Posts: 6785 | From: San Jose | Registered: Jun 2001
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OneBadHatch
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Member # 970
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posted
its 10-40 my car has 145,000 miles but sometimes the oil pressure is fine and sometimes its not which also kind of makes me think that its a sensor and not a actual mechanical problem so how much are those things and where can i get one...??
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1990 GT
TFS Intake and Cam
AFR 165's
Plus all the goodies
Posts: 834 | From: Oceanside, CA | Registered: Mar 2002
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JoeT
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Member # 298
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posted
the "classic" worn engine (mains, crank and journals, rod/etc) low pressure cycle goes like this:
cold start/idle: oil pressure excellent
hot idle: oil pressure low to poor (even zero)
cruise (1800+ rpms): oil pressure excellent
a mechanical oil pressure gauge from autometer is under $40 I think, you can find a little cheaper gauge probably at auto parts stores.
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1984 Ford Tempo AOD--- RIP
Posts: 6785 | From: San Jose | Registered: Jun 2001
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