Question about 1988 Ford F 250

1 Answer

No oil pressure when hot - 1988 Ford F 250

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

  • Ford Master
  • 21,873 Answers

I am assuming you are going by the oil pressure gauge or warning light on the dash. If so, the first thing to do is have the oil pressure checked with a mechanical gauge to make sure the pressure really is low.
If you are hearing noise in the engine and the pressure really is low, could be a faulty oil pump, clogged pickup screen, or worn bearings.

Posted on Jan 10, 2013

  • 1 more comment 
  • timothyca292
    timothyca292 Jan 10, 2013

    when starting up truck yes hear noise in enigne then goes away

  •  Stephen
    Stephen Jan 10, 2013

    Well if you hook a mechanical gauge up to it and it reads under 10 or 20 psi, its time for an overhaul or another engine.

  • timothyca292
    timothyca292 Jan 10, 2013

    ok tyvm for the imput my buddy changed oil and just talked to him and told me these problems my first thought was oil oump but wanted more input about this problem ty once again

×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Willthe bluebird sss oil pump fail after 20 years


It certainly could.
Also, at that age, the bearings and clearances could be getting slack so oil pressure would be expected to get lower.
If oil pressure is high when engine is cold, and low at idle when engine is hot, and high at higher RPM with hot engine, then it's more likely engine wear than bad oil pump.
Low oil pressure at high rpm with hot engine indicates failed oil pump. Best not to run when you have this condition.

Oct 11, 2015 | Cars & Trucks

1 Answer

Whats oil pressure on 3.1 isuzu


4psi idle (bad) and revving to 3k does what, you didnt say.
what was idle RPM 800 or 400>?
the answer is different by hot and cold oil
and oil type, no type stated (do not say brands) 10w30?
running 0w are you>?
and is as low as 8psi hot. at idle ,that is if idle speed is at spec.
is it?
and 3000 rpm would be like 25psi hot, and more cold.
the max pressure will be the pump regulator value.

here is the sensor spec.

The sensor closes when the oil pressure drops to between 4-7 psi (28-48 kPa).

the oil type and bearings clearances (in total) dictate pressure.

3,1 CPC engine spec is.


24649295-qvvdcm34jvcwbumk4o5kywm4-3-0.jpg

Jun 17, 2014 | 1994 Isuzu Trooper

1 Answer

Oil getting too hot


I guess my first question is - how do you know the oil is too hot ?
Engine oil is designed to handle several hundred degrees of heat, so unless the engine coolant is over 275 degrees the oil should be functioning correctly.
If you have worn bearings you can loose oil pressure as the oil heats up because the oil gets thinner. And if the oil pressure drops below 5psi you could loose power to the fuel pump.

Jun 11, 2013 | 1987 Ford F 150

1 Answer

What can cause low oil pressure in a 1 kzte


If oil is old it loses it"s viscosity or thickness when hot, maybe renew oil even put higher viscosity oil in motor.

Feb 05, 2013 | Toyota Hilux Cars & Trucks

3 Answers

Oil pressure drop with engine getting hot


You'll want to remove the electrical oil pressure gauge and check the oil pressure with a manual gauge to verify low oil pressure. If the oil pressure tests good with a manual gauge, then you either have a faulty oil pressure sender, or gauge in the dash (I rarely see faulty gauges). If the pressure is still low, suspect worn crankshaft bearings. There is also a possiblity that the screen to the oil pump is clogged. This can be visually checked by removing the oil pan and cleaned.

Aug 14, 2012 | 1989 Ford Ranger

1 Answer

I just rebilt my 2.3L and is has low oil pressure when it heats up?


My first thought would be oil pump. Did you replace it or re use old one? Also when rebuilding did you have block "hot tanked" (degreased and soaked in hot solution)? Is it ticking like oil starvation? It could be bad oil pressure switch if all sounds good. I'd check oil pressure with mechanical hand held pressure gauge.

Feb 25, 2011 | 1992 Chevrolet Beretta

1 Answer

How do I check and possibly replace the engine oil pressure sensor in a 2006 GMC Envoy Denali?


Oil Pressure Test Check for proper oil pressure at the sending unit passage with an externally mounted mechanical oil pressure gauge. A tachometer may also be needed, as some specifications may require running the engine at a specific RPM.
  1. While the engine is cold, locate and remove the oil pressure sending unit.
  2. Following the manufacturer's instructions, connect a mechanical oil pressure gauge and, if necessary, a tachometer to the engine.
  3. Start the engine and allow it to idle.
  4. Note and record the oil pressure reading when the engine is cold. The engine may need to run at a specified RPM, if so check the vehicle's specification.
  5. Run the engine until normal operating temperature is reached.
  6. Check the oil pressure reading again with the engine hot and record the value. Turn off the engine.
Compare the hot oil pressure reading to the specification. If the reading is low, check the cold pressure reading against the specification. If the cold pressure is well above the specification, and the hot reading was lower than the specification, the engine may have the wrong viscosity oil. Change the oil, making sure to use the proper grade and quantity, and then repeat the test.
Low oil pressure readings could be attributed to internal component wear, pump related problems, a low oil level, or oil viscosity that is too low. High oil pressure readings could be caused by an overfilled crankcase, too high of an oil viscosity or a faulty pressure relief valve.

Oct 09, 2010 | 2006 GMC Envoy Denali

1 Answer

Where is the oil pressure sensor located on a 1996 murcury cougar


Look for the oil pressure sending unit on the block or the cylinder head on the V-6 or V-8 models. --- OIL PRESSURE TEST Check for proper oil pressure at the sending unit passage with an externally mounted mechanical oil pressure gauge (as opposed to relying on a factory installed dash-mounted gauge). A tachometer may also be needed, as some specifications may require running the engine at a specific rpm.
  1. With the engine cold, locate and remove the oil pressure sending unit.
  2. Following the manufacturer's instructions, connect a mechanical oil pressure gauge and, if necessary, a tachometer to the engine.
  3. Start the engine and allow it to idle.
  4. Check the oil pressure reading when cold and record the number. You may need to run the engine at a specified rpm, so check the specifications.
  5. Run the engine until normal operating temperature is reached (upper radiator hose will feel warm).
  6. Check the oil pressure reading again with the engine hot and record the number. Turn the engine OFF.
  7. Compare your hot oil pressure reading to specification. If the reading is low, check the cold pressure reading against the chart. If the cold pressure is well above the specification, and the hot reading was lower than the specification, you may have the wrong viscosity oil in the engine. Change the oil, making sure to use the proper grade and quantity, then repeat the test. Low oil pressure readings could be attributed to internal component wear, pump related problems, a low oil level, or oil viscosity that is too low. High oil pressure readings could be caused by an overfilled crankcase, too high of an oil viscosity or a faulty pressure relief valve.

Sep 09, 2010 | 1996 Mercury Cougar XR7

2 Answers

Not enough oil pressure while idling


Not really, when the oil is cold it is thicker so the pump is pushing the oil at a greater pressure.

When the oil gets hot, it is LESS thick than when it was cold, so naturally the pump does not have to work as hard to pump the hot oil and the pressure goes down.

You can go to the next thicker oil recomended by the manufacturer for your engine and you should see the oil pressure higher than before.

Mar 29, 2010 | 1992 Chevrolet Camaro

1 Answer

1996 oldsmobile aurora oil pressure sensor says low oil pressure my mechanic checked it out and replaced the oil pressure sensor and problem still exsists he tested the oil pressure recommended 20 PSI when...


The Aurora is a low pressure oil system. The only solution available at this time is to increase the oil weight. I went o straight 30W to solve the idle alarm issue. Some use 20W oil and that works too.
With 20W you will be at 80 to 90psi cold then drop to 20-30psi hot.
I first replaced the oil pressure gauge and it was worse. I put the original back in and it was better. Then went to 30W and all is fine.
Running it that way for a few years now.

Jul 17, 2008 | Oldsmobile Aurora Cars & Trucks

Not finding what you are looking for?
Cars & Trucks Logo

152 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts

yadayada
yadayada

Level 3 Expert

75822 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

fordexpert

Level 3 Expert

5501 Answers

Are you a Ford Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...