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Oil Pressure Low

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Canbrinor
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Vehicle: 2004 Ford Taurus SE

Oil Pressure Low

Post by Canbrinor » Wed Mar 06, 2019 2:24 am

I'm new here. Just bought a 2004 Ford Taurus SE Sedan for my first car. Went to start it up today and was greeted with a message that read oil pressure low. Any common causes of this or ideas of what it may be?


mmsstar
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Re: Oil Pressure Low

Post by mmsstar » Wed Mar 06, 2019 3:46 pm

Welcome, did you check the oil?

Canbrinor
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Re: Oil Pressure Low

Post by Canbrinor » Wed Mar 06, 2019 4:44 pm

Yes. It's at the right level. Car runs perfectly fine but the warning concerns me

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Re: Oil Pressure Low

Post by Webmaster » Wed Mar 06, 2019 6:22 pm

Next up is to locate and inspect the oil pressure sender and associated wiring. Inspect for breaks, chafing, corrosion, etc. Repair as required.

Then, get a mechanical oil pressure gauge and connect it, see if you actually have oil pressure. If you do, check your sending unit (replace?). If you don't have pressure you're in for a potentially big repair bill.
2000 Ford Taurus SEL (excellent car, sold to a friend)
1992 Mercury Sable GS (good car except for the tranny, sold)
Current: 03 F150 King Ranch SuperCrew
Other Fords owned: 02 F150 SuperCrew 4x4, 11 F150 EcoBoost, 07 Ranger, 01 F150 XLT, 98 F150 XLT, 96 Thunderbird LX, 95 Escort GT, 86 Mustang LX, 82 Mustang

Canbrinor
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Joined: Wed Mar 06, 2019 2:19 am
Vehicle: 2004 Ford Taurus SE

Re: Oil Pressure Low

Post by Canbrinor » Thu Mar 07, 2019 2:16 pm

Will do. I ran a syscheck and as it went through the list it said "oil pressure ok". So do you think it could just be a faulty sensor?

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Re: Oil Pressure Low

Post by Webmaster » Thu Mar 07, 2019 2:42 pm

I wouldn't condemn the sensor right away, it could be a wiring or connector issue. If you have a scan tool, check the sensor reading that way too. But it could be a faulty sensor.
2000 Ford Taurus SEL (excellent car, sold to a friend)
1992 Mercury Sable GS (good car except for the tranny, sold)
Current: 03 F150 King Ranch SuperCrew
Other Fords owned: 02 F150 SuperCrew 4x4, 11 F150 EcoBoost, 07 Ranger, 01 F150 XLT, 98 F150 XLT, 96 Thunderbird LX, 95 Escort GT, 86 Mustang LX, 82 Mustang

Magus732
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Re: Oil Pressure Low

Post by Magus732 » Sat Jun 08, 2019 12:14 pm

"Oil pressure ok"? That's useless information, friends. You need to confirm where that pressure is; according to the Haynes manual, it should read 40-60 psi at 2500 RPM after the engine reaches operating temperature. Unless you can get exact pressure figures, you won't get accurate enough readings to make a proper diagnosis of the problem. If the oil pump's failing, or if your oil is too thin, it won't maintain pressure once the engine warms up; that's where the real trouble is. :!:

If you have a OBD-II compliant tool that can measure oil pressure in real time, try running your diagnostics while driving down a side road with little/no traffic; keep your engine at 2500 RPM and see where that pressure sits while keeping the throttle steady. Then come to a stop, rev it up hard and see what it does; the pressure should climb while you're accelerating, but it shouldn't shoot up like a rocket, remain the same, or drop like a ton of bricks. If it does any one of those, it's a mechanical problem. If it maintains pressure like it should, it's an electrical problem.
2000 Taurus SE Comfort - Graphite Blue - 3.0L Vulcan FFV
2011 Taurus SEL - Tuxedo Black - 3.5L Duratec 35

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