Question about 1990 Ford F150

1 Answer

Pressure of oil

Oil pressure drops when engine rpm is below 1200

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 508 Answers

You probably have a high mileage engine. Change the oil and go to a heavier oil viscosity and use a quality oil filter. This should help a little. If the engine has many miles on it this is about all you can do to boost the oil pressure. I don't know what engine you have. So you have one of two possibles here. A 302, a 351. A high mileage engine in either of these two engine configurations should have at least 20 pounds pressure at an idle and should rise as the engine rpm's increase. Good luck.

Posted on Mar 06, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

2 Answers

My 2005 Envoy's low oil pressure light will come on when I am at a stop and my car is ideling. My oil gauge will also drop. I just change the oil and filter about 1 month ago


When engine is idling the oil pressure sign can come up and that is OK. However if you've noticed that gauge shows much lower oil pressure that a bad sign. Show it to knowledgeable mechanic (but don't be lured in the engine replacement; ask for a root cause - it may be oil receiver or oil pump). Also I hope there's no oil puddles under the car? What about oil level?

Apr 24, 2015 | 2005 GMC Envoy

1 Answer

Low presure oil


first thing check is the engine oil level.if oil level okay check oil pressure should be for the 4.2 engine oil pressure should be 12 psi @ 1200 rpm for the 5.3 oil pressure should be 18 psi @ 2000 rpm if oil pressure good problem in the oil pressure sending unit. if oil pressure is low problem faulty oil pump or worn crankshaft bearings if oil pressure low engine will have rod knock.make sure you are using correct oil viscosity if oil too thick you will have low oil pressure oil too thin you will loose oil pressure.

Nov 26, 2012 | 2004 GMC Envoy

1 Answer

Why does the oil light turn on when rpm drops below 1000


Oil light pops on at low rpm because at a low rpm, your engine is not running fast enough to maintain full pressure. this is because either you have an oil leak, or defective oil pressure switch.

Apr 01, 2012 | 2006 Chrysler PT Cruiser

2 Answers

VW Golf Mk4 1.4 16v Oil Light Warning on Dash


Measure your oil at normal operating temp, without the engine running of course. This will give you a more accurate reading once the oil has circulated in the system.

The system works like this:
  • With the ignition on, the oil pressure indicator light on the dash should come on and flash. Once the engine is started, the light should go out and stay out as long as the engine is running.
  • If the oil pressure drops below approximately 0.3 bar or 5 psi when the engine is running below 2000 rpm, the light will flash.
  • If the oil pressure drops below approximately 1.8 bar or 27 psi when the engine is running above 2000 rpm for more than 3 seconds, the indicator light will flash and the buzzer will sound.
If either this two warnings occur:
  • The engine should be switched off immediately and the oil level should be checked.

Apr 29, 2010 | 1999 Volkswagen Golf

1 Answer

My 1996 GMC jimmy wants to stall when I come to a stop. The RPM gage goes up & down then drops below 1000 RPMS and stalls.


I would go down to your local auto parts store and do an alternator and battery test. It sounds like at low rpms you are loosing volts. When you apply the brakes you would be supprised how much power from the engine it takes. You could also be loosing oil pressure. Check your oil level. When your engine drops low rpm, the oil pressure drops and shuts down the engine.

Jan 09, 2010 | 1996 GMC Jimmy

2 Answers

2006 Yukon Denali, oil pressure gauge malfunction


Most likely the oil pressure sensor is bad. Its located in the very rear of engine on top of bell housing area.

Oct 30, 2009 | 2006 GMC Yukon Denali

2 Answers

Low oil pressure on 2001 Suburban


your oil sensor comes on at less than ten psi, you may have internal engine damage how many miles on engine, any gum up inside engine, you can try to put on a high pressure high volume melling oil pump to try to help for the time being, but you may need to have it torn and repaired.

Aug 03, 2009 | 2003 Chevrolet Suburban 1500

1 Answer

Oil pressure drops to zero after warmed up or below 2700 RPM


Check the oil pressure with a test guage, if the finding are the same, the look at your oil filter, pump, pickup, or pressure relief valve.....

Jul 18, 2009 | 2002 Isuzu Rodeo

1 Answer

Low oil pressure at idle


how low does the oil pressure drop?? is it below 40?

Mar 05, 2009 | 1990 Ford F150

Not finding what you are looking for?
1990 Ford F150 Logo

Related Topics:

166 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts

yadayada
yadayada

Level 3 Expert

61037 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Fordexpert

Level 3 Expert

5331 Answers

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

Answer questions

Manuals & User Guides

Loading...