Question about 2003 Hummer H2

1 Answer

Oil just changed and now when we rev

We just had the oil changed and now when we rev the motor the oil pressure drops then increase, only does it when you accelerate then when speed is steady its back to 80

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.

  • Master
  • 750 Answers

Sticking preasure releaf valve onoil pump

Posted on Jul 30, 2009

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:

2 Answers

Oil pressure dropped to o Rev it up oil pressure goes up .let off throttle oil pressure drops back t o. All so had light knoc.


Hi,it sounds from what you are saying that you have a isue with the oil pump,and the noking could be where the oil pressure is down so oil is not lubricating the bearings,to run it in this state could couse intunal damidge to the engine,you need to get this checked out.
all the best.

Apr 18, 2015 | Cars & Trucks

1 Answer

Oil pressure problem


in a shop we ignore the dash gauges and use REAL gauges.
we attach a real gauge to the sender port. on engine block.
and read the true pressure.
the lamp on most cars go on at 3 to 5psi.
this is catastrophic failure. that low.

my guess, is you let oil drop and you wrecked bearings.
but let the real gauge prove that , dont guess.

Jul 14, 2014 | 2001 Isuzu Trooper

1 Answer

1998 Isuzu Bighorn, 3.1 DTI. Low oil pressure.


Sounds like a clogged pickup screen. Take oil pan off and check the screen.

Dec 03, 2012 | Cars & Trucks

1 Answer

Oil pressure is really low and valve started ticking after oil change, WHY??


the new oil pressure is affected by the pump speed especially an oil pump that has done a lot of work. Low water pressure is usually a sign of engine wear particularly around the mains and bigends.
As the motor ages and all the parts become worn more and more is lost into the crankcase. As you rev the motor the oil pressure increases and will maintain its pressure at around six or eight PSI.
When you change the oil in the hydraulic tappets drain the oil away and so when you restart the engine after you have changed the oil the worn oil pump take some time to get new oil up and around the hydraulic tappets.
This is a common problem with well used engines, it does not mean that they are not usable but it does mean they are starting to show their age.
Regards

Feb 20, 2012 | 2001 Jeep Cherokee

1 Answer

Its a 1995 chevy k1500 5.7 when in park my oil presure reads fine but when i put it in gear my oil presure drops down to almost stalling


This is odd but somewhat normal. This is the way the electronic gauges register. You can try to replace the oil sender to see if it registers different but as long as it shows some increase in pressure when you rev up you should ok. When you put in gear the RPMS on the tach will drop , thus reducing oil pressure. Also,not knowing when you changed the oil last you may just have worn out motor oil.

Mar 31, 2011 | Chevrolet 1500 Cars & Trucks

2 Answers

Just replaced oil pump still have low pressure 14-20 pounds at 2500 rpms


Set your timing when u remove the oil pump it will surley affect the timing on your motor.... do this with a timing light and and adjust timing by rotating the distrubutor.

Mar 18, 2011 | Ford Taurus Cars & Trucks

1 Answer

I changed the oil sending unit in my jeep now between 10 mph and 40mph the oil pressure is fine but accelerate over 40 and the oil pressure drops to 0


If you had no oil pressure problems before you changed the sender unit.Replace it again.What was the original unit doing wrong for you to change it?What happens when you rev the motor in neutral.Does the pressure drop?Have a look at what I said and get back to me if you need more help.
Hope this helps

Feb 15, 2011 | Jeep Grand Cherokee Cars & Trucks

3 Answers

Low oil pressure on 99 jeep grand cherokee


change your oil,it could be too thin,see if that fixes it

Jan 17, 2009 | 2000 Jeep Grand Cherokee

2 Answers

1994 safari van V6


ya these motors need tons of fuel pressure so if you have a pressure tester test the fuel pressure prior to the fuel filter and see if it is atleast 25 psi if not replace pump with new or rebuild all the luck to you with current project

Jun 25, 2008 | 1995 GMC Safari

Not finding what you are looking for?
2003 Hummer H2 Logo

Related Topics:

136 people viewed this question

Ask a Question

Usually answered in minutes!

Top Hummer Experts

yadayada
yadayada

Level 3 Expert

76649 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8522 Answers

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

Answer questions

Manuals & User Guides

Loading...