Question about 1994 GMC Yukon

1 Answer

When I first start my yukon it has 45 pounds of pressure but when I drive it the oil pressure goes to 10

Posted by on

Ad

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.

  • GMC Master
  • 453 Answers

I would suggest taking the oil pressure sender out and temporarily connecting a manual gauge to the engine. Run the engine until it's warm. If the manual gauge reads the same pressure as the electric one you may have a serious engine problem. If the manual gauge reads normal when the engine is warm the problem is probably with the gauge, most likely the sender.

Posted on Apr 10, 2011

Ad

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

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Low oil pressure on 08 gmc seirra


With fuel injection if the pressure goes to low the fuel pump will stop and the lifters will get noisy.If you are seeing 10 lbs hot at idle I wouldn't worry to much.
If you have a high mileage vehicle and live in a warm climate,go for 20w50 oil at your next oil change,some use straight 40w oil to help oil pressure on worn engines.

Apr 10, 2017 | GMC Sierra 1500 Cars & Trucks

1 Answer

Oil pressure is normal until it reaches200 degrees then oil presure drops to 10 pounds at an idle but give it gas and it goes up when its first started oil pressure is at 40 pounds until it reaches 200...


Oil pressure drop after reaching operating temp is normally caused by worn main bearings (depending on mileage).Worn bearings will allow pressure drop at idle and increase when accelerated above idle.

Jul 14, 2011 | 1999 Chevrolet Blazer

1 Answer

I belive the speed sensor broke because runs fine on the 1st gear and 2nd gear are fine when is time for 3rt it change to 3rt but rpm goes up and reject it and goes back to 2nd pretty much i can go...


take all wheels off the ground use jack stand,start engine up and put car in drive and let it run for about 5 mins, with wheel off the ground it should shift gears better, if it do you to change your transmission filter and oil, VERY IMPORTANT TO CHANGE OIL WHILE IT IS HOT! check oil to make sure no metal is in oil or heavy shavings, if shavings or metal is present you need new tranny,measure the amount of oil you take out put same amount back in, i really dont think you got a speed sensor problem you might have too much milage on your yukon, hay mon sure you service your yukon on time or else ford will excort you home, good luck mon and big up u self

Jul 06, 2011 | 2007 GMC Yukon

1 Answer

I have a 98 s-10 it wont start it has 40 to 45 pounds of pressure & its firing getting gas but wont run i pulled the fuel pump relay n it try to run i sprayed it with start fluid it hits but if i put...


If this truck has the 4.3L vortec motor it will not start with 40-45 PSI fuel Pressure.Thius engine requires approx. 56 PSI fuel pressure or it will not start. The fuel pump more than likely needs to be replaced this is a common problem with the 4.3L vortec engine.Change the fuel pump and your problems will be solved.

Apr 26, 2011 | 1998 Chevrolet S-10 Pickup

1 Answer

Truck takes 20 seconds of cranking then starts oil press goes up to 25 pounds at idle then drops to zero thens comes back up to 25 pounds then about eight seconds later the truck idles up then stalls this...


dont be messing with different oils, it needs 15W40. period. these trucks have enough problmes without putting in the incorrect oil. First get the right oil in it, then have a diesel shop check it out.

Dec 06, 2010 | Ford F-350 Cars & Trucks

2 Answers

Low oil pressure after engine warms up in 94 blazer with 4.3


I have a 99 blazer and ever since I have owned it, it reads lower in pressure when idling, but will go up too 40 while driving. This is normal for the vehicle. If the pressure gets real low, and stays low, it means its time for an oil change.

As long as the pressure goes up when you give it gas, it is fine.

Jan 09, 2010 | Chevrolet Blazer Cars & Trucks

1 Answer

Oil pressure loss at times while driving down the highway . the oil pressure gauge goes from 40 pounds to 0 pounds. you shut it off right away then restart it and oil pressure comes right and holds 40...


Mate .2 things.The oil pressure sending unit is playing up or its not.The other is how long since an oil /filter change.If you know the oil is ok ,get the sender unit fixed.Oil is a lot cheaper than metal if things are not right.If it happens all of a sudden,the sender unit may be at fault.Hope this helps

Jan 02, 2010 | Dodge Cargo Cars & Trucks

1 Answer

2004 yukon xl oil and fuel gauges do not work.


2 things come to mide off the bat loose or corroded ground or cluster going bad

Jan 17, 2009 | 2002 GMC Yukon XL

1 Answer

5.3 L Yukon XL oil pressure problems


Well first the GM oil pressure sending units are notorious for false readings, so what you must do is remove the oil pressure sending unit and plug in a test mechanical gage to verify the engine has acceptable oil pressure, after you are certain the pressure is ok replace the sending unit, it requires a special socket to remove it, the socket is about $5.00 USD. There is a deep socket and a shallow, so check the sending unit for the correct socket fit.

May 02, 2017 | 2000 GMC Yukon XL

2 Answers

1990 GMC P/U sudden drop in oil pressure


i would check the the oil pressure sensor is not foul up this can happen sometimes, as there is vain in the sensor. this reads the pressure. and tell the ecu. and your display.

Jul 02, 2017 | 1990 GMC Sierra

Not finding what you are looking for?
1994 GMC Yukon Logo

135 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

76132 Answers

Freddy

Level 3 Expert

1311 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

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

Answer questions

Manuals & User Guides

Loading...