Question about 1988 Isuzu Trooper 2 Door

1 Answer

Oil Pressure Problems on a 1988 Iszuzu Trooper

I have a 1988 trooper with a 4 cyl. when I first start the motor I have great oil pressure but after it warms up to operating temp it drops to nothing what can I do to fix this problem

Posted by on

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Cheetah:

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

  • Expert
  • 96 Answers

This engine is only the 4ZE1 2.6L EFI in the USA spec-models. The engine will run for a very long time with proper maintenance. Oil pressure falling only after warm-up indicates that the oil, when cold, is thick enough to make the pressure sending unit sense the oil. When it heats up the sending unit may not detect it as the oil thins out. The sending unit is what makes the gauge give an indicator its signal.

I would check the sending unit first, as your concern does not indicate a clattering engine or other problem. This model engine has a circuit that shorts the ignition to ground and kills the engine if the oil pressure ACTUALLY falls below a set minimum. Indicators of this problem are a loud clattering in the engine, as well an engine that will start and then stall for no reason.

Good luck!

Posted on Oct 09, 2010

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 there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this 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.

Here's a link to this great service

Good luck!

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

Whatr makes oil sludge form under Izuzu Trooper 1988 Model


great question, (old)
oil and water do that.
or not changing oil until 25,000 miles like some dweeb, synthetic oil users suck in to the lie.
or driving only 1 mile per day (short trips)
the engine needs to reach full operating temp to burn off all that water.
gasoline burns into CO2 and water. so water happens
here.

or its a FORD (LOL)

Jun 08, 2014 | 1991 Isuzu Trooper

1 Answer

P2285 code 6.0 litre ford deisel long cranking before starting after starts runs great but oil pressure gauge drops at idle


bad bearings on crank or worn oil pump. Pressure will be up when cold, but will drop when engine warms up. Check for knock in lower end. If so, bad crank bearings.

Jan 16, 2013 | 2004 Ford Super Duty F 550

1 Answer

1997 GMC Sonoma with 4 cyl engine. The truck runs great, but after the engine warms up, the oil pressure drops to around 12 from 50 when cold. is this the oil pump and how do i change?


Depending on oil type (IE: synthetic, etc) this is normal. If using conventional oil then I'd be concerned. To replace oil pump you'll need to remove pan and it is bolted to lower part of engine.

Apr 03, 2011 | 1997 GMC Sonoma

1 Answer

91 trooper isuzu 4 cyl,runs bad when cold,where is the sensor/


The coolant temp. sensor is located under the intake manifold at the #1 intake port. It is not easy to access. Check the connector for corrosion.
It maybe accessable through the right wheel opening over the tire. Good luck

Oct 18, 2009 | 1988 Isuzu Trooper 2 Door

1 Answer

When motor is warmed up oil pressure drops when motor idles


As long as it dont put the red warning light for oil pressure on its ok .Older 3.1's do that its just the car .

Apr 07, 2009 | 1995 Isuzu Trooper

1 Answer

Replace 88, 2.6 ,4 cyl.Isuzu with 2.8 V6 ??


One word... NOOOOOOOOOOOOOOOOOOOOOOO!!!!!!!!!!!!!!!!

Feb 22, 2009 | 1992 Isuzu Trooper

1 Answer

Oil pressure drops once it gets warm


Sorry to say it sounds like the motor is gone. Higher oil pressure when the oil is cold is normal. But, when the engine gets to operating temp and the pressure bottoms out and the engine knocks you have big problems. If the mileage is very high (150,000) or more your bearings are so worn that the oil can't fill the void between the surfaces and thus the low oil pressure.

Feb 07, 2009 | 1999 GMC Suburban

1 Answer

Oil pressure for 2001 isuzu trooper


I'd check to see what is in the crankcase currently; with modern multirange oils, that sounds high.
The typical operating range is from 30-60#; 10 seems low for an idle pressure but then idiot lights are supposed to trigger at ~ 4# pressure.
If it was mine, I would change oil and put a multirange type suitable for your area in it to see what influence it has. If you are in a temperate climate as I am, it might be time to change from summer to a winter range; 10W30 is good for us and 10W40 in summer (WV).   

Oct 13, 2008 | 2001 Isuzu Trooper

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

398 people viewed this question

Ask a Question

Usually answered in minutes!

Top Isuzu Experts

Marvin
Marvin

Level 3 Expert

83036 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22382 Answers

Thomas Perkins
Thomas Perkins

Level 3 Expert

14505 Answers

Are you an Isuzu Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...