Question about Chevrolet Silverado 1500

1 Answer

2005 Chevy Silverado show low/erratic (0-20 lbs) oil pressure.

My oil pressure reading is very erratic until the vehicle is at operating temperature. The pressure reading will fluctuate all the way from 0, with the alarm going off, to 20. Normal range for this truck has been between 20 and 40 pounds, and it stays in this range once the vehicle is at operating temperature. I had a mechanic check it...he said the pump is fine and had no idea why the gauge was erratic.

Posted by on

Ad

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.

  • Chevrolet Master
  • 76,630 Answers

More then likely the sending unit is faulty, but to be safe hook up a mechanical test gage at the oil pressure sender port and check oil pressure hot engine, if it is steady then replace the sending unit.

Posted on Jul 28, 2017

Ad

6 Suggested Answers

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.
New users get to try the service completely Free afterwhich it costs $6 per call 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

Ad
brainyass
  • 242 Answers

SOURCE: oil pressure gauge 2000 jeep cherokee sport 4.0 6cyl.

It's probably the oil pressure switch. I have to replace min every 5 years or so because it does the same thing. Mine is mounted next to the filter on my '93. It's a little black thing with a plug in the end. You can get one at autozone for about $40.

Posted on Oct 24, 2008

  • 33 Answers

SOURCE: 98 jeep cherokee - 4.0 L low oil pressure at idle once warmed up

The only spec that Jeep gives for the oil pressure is 37lbs @ 1600 rpm. Since you are within specs I would not concern myself with it. Though with a new oil change you will probably notice a slight increase.
Also beware that the 4.0 is known for bad oil pressure switches.
Tell your son to have a safe trip and don't worry.

Posted on Nov 24, 2008

  • 64 Answers

SOURCE: changed oil pressure switch,still no oil pressure

The fuel pump on that model runs through the oil pressure switch so that if the truck looses oil pressure,It kills power to the fuel pump to prevent engine damage.you need to find the cause of the low oil pressure reading(possibly a bad oil switch).That would be the cheapest place to start,or have it checked with a mechanical gauge.Good luck,
ChevRev

Posted on Mar 30, 2009

mosthated357
  • 91 Answers

SOURCE: 2005 chevy silverado with low oil pressure

You should replace your oil pressure sensor its cheap and easy to do...

Steve

Posted on May 16, 2009

  • 13 Answers

SOURCE: 1999 Chevy Blazer - idle fluctuates

oil pump might be going bad

Posted on Aug 03, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Chevy 2005 4x4 silverado low oil pressure replaced oil sending unit and the cluster 137000miles no noise from engine


By the time you hear noise from the engine it will be too late for that engine. You may need an oil pump replacement. Have a mechanic check the oil pressure. It's cheaper than replacing the engine.

Jul 01, 2014 | 2005 Chevrolet Silverado 1500 2WD

1 Answer

Chevy 2005 silverado low oil pressure replaced oil sending unit and the cluster no noise from engine


Put a gage in the sending unit hole and see if the oil pump is weak, that is the best way to tell if the engine pump is ok.

Jun 30, 2014 | 2005 Chevrolet Silverado 1500 2WD

1 Answer

At idle, intermittently, my 2005 chevy truck will show low oil pssr. oil level is fine. oil last changed within 2000 miles. suggestions?


Bad oil sensor. That's the first thing I would check. The oil pressure sensor could be going bad and setting off a bad light.

Aug 03, 2013 | 2005 Chevrolet Silverado 1500 2WD

1 Answer

Just bought a used 2002 chevy s10 crew cab and drove it will trailer in tow this weekend. when I got to my desination over several mountians, the check engine/guages light came on. The oil pressure was...


Normal oil pressure at operating temperature should be around 40 lbs, 30 at an idle. Either you have a bad oil pressure sending unit or you actually have low oil pressure that indicates a serious engine problem.

Jul 19, 2011 | Chevrolet S 10 Cars & Trucks

2 Answers

I have a 2006 chevy silverado 5.3L..When in idle oil pressure gauge goes to 80 and when i accelerate ail pressure goes to zero ...is it the oil sending unit?


It could be the sending unit. If the truck is low on oil it will cause something similar. Be sure the oil level is topped up. The only way to be sure it so measure the actual oil pressure at the engine with a proper gauge..

May 07, 2011 | 2006 Chevrolet Silverado 1500 2WD

1 Answer

Oil pressure is still reading high even though I just changed the filter and oil.


A high oil pressure reading is a good thing, low oil pressure is something to worry about. Normally with a cold start, your oil pressure will remain high until the engine has reached operating temperature, then drop a bit, but again, high oil pressure readings are a good sign of a healthy engine. One other factor to consider is the viscosity of your oil, if your engine uses 5w30 and you switch it to a higher viscosity such as 10w40, you may also see higher oil pressure readings, so be sure you are using the correct oil for your vehicle. I hope this has helped you! :)

Jan 21, 2011 | 2001 Jeep Wrangler

1 Answer

05 Silverado, overheats when in 4-wheel drive under strain. Fixed once(so I thought) by replacing the water pump and thermostat. Happened a few months later. Again, 4-wheel, under strain. Wound up...


Instrument cluster - GM had problems with a part inside the cluster , Stepper motor , These faulty step motors caused the gauges to act erratically . 2003 to 2006 ! ALL GM vehicles . Just replaced a cavalier instrument cluster for what customer thought was a over heating problem .The fans come on low speed when engine temp. reaches 220 degress
The PCM commands the low speed cooling fans ON under the following conditions:
• Engine coolant temperature exceeds approximately 104.25°C (220°F).
• A/C refrigerant pressure exceeds 1447 kPa (210 psi).
• After the vehicle is shut OFF if the engine coolant temperature at key-off is greater than 101°C (214°F) the low speed fans will run for a minimum of 60 seconds After 60 seconds, if the coolant temperature drops below 101°C (214°F) the fans will shut OFF. The fans will automatically shut OFF after 3 min. regardless of coolant temperature.
The PCM commands the high speed fans ON under the following conditions:
• Engine coolant temperature exceeds approximately 107.2°C (225°F).
• A/C refrigerant pressure exceeds approximately 1824 kPa (265 psi).
• When certain DTCs set.
At idle and very low vehicle speeds the cooling fans are only allowed to increase in speed if required. This insures idle stability by preventing the fans from cycling between high and low speed.

Mar 31, 2017 | 2005 Chevrolet Silverado

1 Answer

My oil psi be on my 2003 chevy astro awd van


The oil pressure should be 60 to 65 psi when engine started cold and at operating temperature should be 40 to 50 PSI at idle and 45 to 60 at higher RPM's with engine at operating temperature. Low pressure could be a faulty oil pressure sending unit or a bad oil pressure regulator valve. Good luck and hope this helps, and you could always have your oil pressure check manually to ensure a correct pressure reading. If you think it could be the oil pressure relief valve (Sometimes) or the check valve (not very often). One is located inside the oil pump and the other in the adapter on the motor that the filter screws on to. If you also have a problem with the oil pressure being erratic when the motor has been running I would be looking at the valves.

Mar 05, 2010 | 2003 Chevrolet Astro

2 Answers

I HAVE A 2001 CHEVY SILVERADO 4.3L. IN THE


I would your sending unit I dont really think you have a problem with your engine,I hope this helps you

Sep 22, 2009 | 2001 Chevrolet Silverado 1500

1 Answer

2005 chevy silverado with low oil pressure


You should replace your oil pressure sensor its cheap and easy to do...

Steve

May 16, 2009 | 1999 Chevrolet Silverado 1500

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

Related Topics:

64 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

76630 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8514 Answers

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

Answer questions

Manuals & User Guides

Loading...