Question about Cars & Trucks

2 Answers

I have a 2002 envoy and the dic is telling me low oil pressure turn engine off. The things is my oil pressure reads normal on the gage when it does this and the truck don't act any different. Any help

Posted by on

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Cars & Trucks Master
  • 2,963 Answers

Must be some bad information getting to the ecu. Bad conections due to salt corrosion may be the cause. Bright metal contacts are essential for correct transmission of information from sensors to and from the ECU (brain).

Posted on Apr 15, 2015

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Cheetah:

    An expert who has answered 20 or more questions within one hour.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 111 Answers

Change oil pressure sensor

Posted on Apr 15, 2015

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.
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

  • 1 Answer

SOURCE: Low Oil Pressure on 1992 Chevy 1500 Pickup Truck

1992 silverado pickup has a problem with the oil pressure Gage on the dash board fluctuate when i put break on or accelerate the gas 

Posted on Feb 14, 2009

tbirdfan1
  • 3051 Answers

SOURCE: Low oil pressure reading on ´96 Toyota T100

hi ben
my answer would be yes i would wory about it...
Guages are put on vehicals for a reason not just for looks i would have the car hooked to a diagnostic center and checked even though the guage may be faulty but i wouldnt take a chance

Posted on Feb 18, 2009

  • 6982 Answers

SOURCE: while i'm idling at a dead stop, the oil pressure

Have the oil pressure tested with an accurate mechanical gauge. often the sending unit goes bad, but without testing it could cost you an engine before you find the problem.
If the mechanical gauge shows same low readings, you have internal engine wear (likely worn crank/rod bearings) Then, it's your decision on whether to drive it till it expires, repair it or buy a new vehicle.

Posted on Apr 02, 2009

garputo22
  • 127 Answers

SOURCE: My oil pressure gage just drops to 0!!!

You need to replace the oil pressure sending unit, this is what tells your gauge what the pressure is. For future information if your oil pressure drops again and its a real failed oil pump within a few minutes you will internally damage the engine. I would get a new Oil Pressure Sending Unit. Let me know if you have any questions.... Thanks!

Posted on Jun 05, 2009

RonPark
  • 855 Answers

SOURCE: 03 gmc envoy with 5.3 140000 miles. Oil pressure

There may be a loose wire or the gauge or sending unit may be going bad. The first thing I would do is to hook up a temporary oil pressure gauge, not using the old one at all. With this watch gauge while driving and see what readings you get. If the readings still jump around you have a pump that is getting weak and failing, If that is the case the pump should be replaced, but with high milage you may consider rebuilding the entire engine. If the readings stay normal start checking for a loose wire at gauge or sender. Then check sender, then gauge and replace as needed.

Posted on Oct 02, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

My 2002 Envoy started knocking on the way home and the oil pressure dropped om the gauge.


I wouldn't drive the vehicle till you find out what is wrong. Have you ever changed the oil and filter, plus, overall tune-up?
Is this high-mileage engine? You could use an analog gage in place of the oil pressure sending unit, just to double check the gage. If no oil pressure, could be the oil pump? If this is a high-mileage engine replacing the oil pump may not help. You may need an engine overhaul. Do you have any cylinder compression?
Because that knocking, hope you don't have internal engine damage?

Mar 12, 2016 | 2002 GMC Envoy

1 Answer

I have 2002 gmc envoy, oil pressure low, stop engine warning only comes on when i stop on a hill?


The pressure regulator in the oil pump may not be working, the idle speed may be too low and there may be a lot of wear on internal engine parts lowering oil pressure

May 30, 2014 | 2002 GMC Envoy

1 Answer

Oil pressure low stop engine light and check gauges light


It could be your oil pressure sensor has gone bad.

Jan 10, 2013 | 2003 GMC Envoy

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

NO OIL PRESSURE warning came on suddenly. I stopped the engine and started it after 10 mins. It was running fine until the same warning came back. Dip stick reads full. SOMEONE HELP!


Hi and welcome to FixYa. I am Kelly. I understand your concerns. No oil pressure is one of the worst things that canhappen to an engine.

The can be caused by a bad oil sending unit or a problem with the sending unit wiring.

The really is only one way to troubleshoot this and that is to read the oil pressure with a direct pressure gage. Most of the time that involves installing a direct reading gage at the oil sending unit port and verifying the actual engine oil pressure. If it is normal the most probable failue is the sending unit.
If the oil pressure is really low then the following things have to be checked:

1. Oil pump
2. Camshaft bearings
3. Main crankshaft bearings
4. Rod end bearings
5. Oil pump pick up tube in the oil pan

You can pull a valve cover an watch for oil flow but it is NOT going to tell you the OIL pressure.

The only easy fix is that of the oil sending unit and associated wiring. Everything else requires disassembly of engine parts for inspection of clearances.

Kelly

Apr 18, 2010 | 2000 Volvo S80

1 Answer

2002 Envoy I come to a stop and my oil gauge drop and check gauge come on and readout say low oil pressure and sometime engine shut down. push on gas thimg go back to normal. this doesnt happan all the...


Try a new oil pressure switch first,if that does'nt repair the problem then get the oil pressure tested.If it tests low then the problem is internal and the motor meeds to be dissasembled.

Nov 10, 2009 | 2002 GMC Envoy

1 Answer

What is the check gauges light


CHECK GAGES light (1) indicates a potential engine failure(low oil pressure, low coolant, coolant overheating) has occurred.
· Check gages and shut down engine. Gages should read as follows: Oil pressure 5 to 10 psi (34 to 69 kPa) at idle; Water Temp gage below 230 degrees (110 C).
· Check engine oil level (Para 2-11) if OIL PRESS gage indicates low reading. Check coolant level (Para 2-11) if Water Temp gage indicates high reading. Notify Unit Maintenance if levels are low.

If CHECK ENGINE light (2) is on, check engine oil pressure gage (3) and water temperature gage (4). If both indicate normal, proceed with mission and then notify Unit Maintenance. If either one does not indicate normal, stop engine immediately and notify Unit Maintenance


Oct 16, 2009 | 1999 GMC Jimmy

2 Answers

03 gmc envoy with 5.3 140000 miles. Oil pressure reading fluxuates between 0 and 40. When problem first started pressure read 80. When vehicle was new it stayed at midpoint (40) vehicle has plenty of oil....


There may be a loose wire or the gauge or sending unit may be going bad. The first thing I would do is to hook up a temporary oil pressure gauge, not using the old one at all. With this watch gauge while driving and see what readings you get. If the readings still jump around you have a pump that is getting weak and failing, If that is the case the pump should be replaced, but with high milage you may consider rebuilding the entire engine. If the readings stay normal start checking for a loose wire at gauge or sender. Then check sender, then gauge and replace as needed.

Oct 02, 2009 | 2003 GMC Envoy Xl

3 Answers

My oil pressure gage just drops to 0!!!


You need to replace the oil pressure sending unit, this is what tells your gauge what the pressure is. For future information if your oil pressure drops again and its a real failed oil pump within a few minutes you will internally damage the engine. I would get a new Oil Pressure Sending Unit. Let me know if you have any questions.... Thanks!

Jun 05, 2009 | 2004 GMC Envoy

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

Related Topics:

45 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cars & Trucks Experts

yadayada
yadayada

Level 3 Expert

75822 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Randy Ohler

Level 3 Expert

14585 Answers

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

Answer questions

Manuals & User Guides

Loading...