Question about 1994 Isuzu Rodeo

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What is normal oil pressure suppose to read for 94 isuzu rodeo. my guage seems to read low when idle and raises when rev engine.

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Standard according to manual is @ 8 PSI I too thought that it was low. but when you drivce the presure rasies to @ 45- 50 PSI so it is normal.

Posted on Nov 28, 2010

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How to fix high hc on 94 isuzu rodeo v6 3.2


Took me a couple of views to figure out what HC means.
You would need to know what the limit is for your area and what the exhaust is producing, then find out what the cause is.
It stands for unburned hydrocarbons which is supposed to be controlled by the O2 sensor among other things. Could be a sensor or the engine not getting up to normal temp.

Sep 06, 2012 | Isuzu Rodeo Cars & Trucks

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The oil pressure on my 94 Trooper flucuates from around 10 at an idle up to 55-70 when I'm driving down the road. I changed the oil sending unit when I changed my oil thinking they both might help but I...


This seems pretty normal. So long as the pressure does not fall while driving, you're good.
When Idling there is very little stress on the engine, and it requires little oil pressure to maintain.
Additionally, the pressure is directly related to the rpm of the engine as the oil pump is driven by the engine. As the rpm increase, so does the pressure. The pressure should be stable at a given rpm.

The pressure on the high side is good. On the low side is adequate (idle). You did not say how many miles, but the only way to change this is to rebuild the engine with new bearings and seals. I don't think that's somthing you want to do. Sounds fine for now. Leave it alone.
Don't fall for a new oil pump. That is very rarely the issue.

Feb 07, 2011 | 1994 Isuzu Trooper

1 Answer

2001 Jeep Grand Cherokee Laredo approx 147000 miles. Recently notices oil pressures going up to 80psi periodically when driving. If I turned off the engine and restarted it would read normally. Within...


Very first thing you need to do is install a mechanical pressure gauge on there to verify what you see on your gauge. If the actual pressure is low, then it's time to start looking inside the engine. If not, then you need to trace out the electrical problem but will know the engine is safe.

Jan 29, 2011 | 2001 Jeep Grand Cherokee

1 Answer

My daughter's 2000 Isuzu Rodeo acted like it ran out of gas while going 60mph. I put a gallon of gas in it and after several attempts it did start and idle. It would not, however, rev the engine when the...


All of the symptoms that you have talked about point to a fuel pump that is starting to fail. I would take it to a mechanic and have the fuel pressure checked. It is a simple procedure and should be rather inexpensive.

Dec 28, 2010 | 2000 Isuzu Rodeo

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Oil pressure guage drops low when at idle but when excelerating reads normal kmello@sousademayo.com


Mine does the same thing, the gauge is like a tachometer, it revs like crazy, but holds steady at high speed, it goes down to about 10 at idle, 35 at cruise speed and it will go up to 55 if I step on it. But remember it is just a pressure gauge, it will read this pressure with 1 qt of oil in there, so don't use it for a level indicator. Check the oil, and you know if it has oil in it. Hope this helps.

Aug 05, 2010 | 1998 Dodge Avenger

1 Answer

1989 F150 351 oil pressure guage starting dropping to 0 suddenly and engine light comes one. When I rev the engine it goes back to normal but a soon as the rpms drop the needle goes all the way to the left...


Hi:
Usually your oil light doesnt come on unless you have less than 10 lbs of oil pressure. You either have a bad oil pressure sending unit, or your engines oil pump is bad. The only way to verify your engines oil pressure is to buy a direct reading pressure guage and install it on your truck, or have a mechanic check your engine oil pressure. Eitherway, you need to do something soon, because the long term effects of running with low oil pressure will ruin your truck engine.

Jan 25, 2010 | 1989 Ford F 150

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

Theres a sound on the top head and it sounds like lifters. also it wont boost and the oil pressure is low, very low, can i get help with this please


Lifers will rattle if oil pressure is low. Have you screwed in an oil pressure guage to check. Should read about 20 psi at idle and 40-60psi above idle.
Causes are nemerous from low oil level to worn out engine. You dont mention mileage. Normally very good engines.

Dec 01, 2009 | 1990 Nissan 300ZX

1 Answer

Oil pressure drops to zero after warmed up or below 2700 RPM


Check the oil pressure with a test guage, if the finding are the same, the look at your oil filter, pump, pickup, or pressure relief valve.....

Jul 18, 2009 | 2002 Isuzu Rodeo

2 Answers

Low Oil Pressure on 1992 Chevy 1500 Pickup Truck


Hi! The problem you are outlining is very similar to the Rover V8 (Buick engine). We Brit's are used to the low oil pressure when warm. I presume a complete oil change engine flushed with new replacement filter has been carried out? Maybe a top quality synthetic oil with additive may help. You may take it a little further and replace the oil pump with an after market performance up rated one. If you really are worried about low oil pressure damage whilst in low rev's try Molybnenum Disulphide an oil additive which really reduces friction metal to metal wear particulary in the situation you are describing.
That's the best I can suggest at this moment.
Good Luck! and Happy New Year!
Paul 'W'
Onyer~EDson(:0)~[><

Dec 28, 2008 | 1985 Chevrolet Camaro

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