Question about Isuzu Trooper
Isuzu Trooper Oil pressure gauge reading low
Posted by Anonymous on
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Posted on Jan 02, 2017
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).
Posted on Oct 13, 2008
Drop the small tin sump down and look at the longer of the pick up pipes for a bad O seal or cracking .
This lets the pump pull in air so you dont get pressure - some times they even fall right off .
Posted on Aug 27, 2009
SOURCE: low oil pressure
You didn't mention the actual pressure but an engine requires as low as 6 psi when the engine is idling and 15 to 20 psi while driving at higway speeds. Your Yukon requires a 5w-30 weight oil. If the oil used is correct, you will want to have the pressure sending unit and gauge checked.
A mechanic will install a "mechanical" oil pressure gauge tester on the engine to find out what the actual oil pressure is. If the mechanical tester says the oil pressure is good, he will then begin to diagnose the electrical pressure gauge system.
If on the other hand, the mechanical gauge verifies the pressure is still low, he must diagnose the engine mechanical problem that is causing the low pressure issue.
Posted on Jan 12, 2010
While engine is running, open the cover where you add oil to engine and see if you see a good flow of oil, if good flow, could be as easy as replacing oil sending sensor. got to realize that if poor maintenance history your engine may not be building enough pressure at iddle to move your hydraulic operated valves, only when you rev it up it will pump enough to run smooth. if running engine too long, you may cause more damage to other engine components such as crankshaft and cam shaft bearings. if you can spare a few bucks, have a good mechanic check your oil pressure with a mechanical gauge. another cheap option is to replace oil pump. last resort if you love your truck as much as we do,replace engine or rebuild it. At 205,000 this is a normal symptom, other than timing chain problems, most engines don't make it that far. hope this helps!
Posted on Mar 01, 2010
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