Question about 1999 Dodge Avenger

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Unsteady oil pressure.... oil pressure so low and the car will start, my question is, the gauge reads about half between (low) and (Normal) bar, while in neutral revving the gas the needle will gradually rise to normal state, even if i drive the car, again will rise gradually to normal and little more, but stalled on me twice since my brother and i changed the oil with castrol changed the spark plugs, we also noticed that there was some oil in the spark plug sockets, not sure if thats the problem, i just got this car and now i have to dump money into it because the ******** previous owner prob didn't take car of the car like most of you out there already! can some one please explain this to me, i am not new when it comes down to getting dirty and getting the job done right! anyone ?

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  • martyizzo Nov 22, 2009

    Thanks guys for your response, My brother and i changed the gaskets from the manifold, spark plug wells and gaskets surround area with new ones, thats just step one, today we are going to change the oil pressure sending unit and look at the oil pump to see if there is any debris, will let ya guys know

  • martyizzo Nov 23, 2009

    michael, Thanks for your solution.

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  • Master
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Hello there:
I feel your pain and know what you are going thru
A few things that you may want to consider is having the oil pressure sensor changed and than i would drain the oil and drop the oil pan and remove the oil pump and service it and also clean the suction screen this will also give you a idea of what the condition of these parts are in and see if there is any sludge or junk or any metalic shavings in there and last i would recommend an full engine flush ok and once you get these items done i think you will be all right ok?
I hope that this is very helpful for you.
best regards
michael (golden phesant transportatin)

Posted on Nov 16, 2009

  • Michael Thomas
    Michael Thomas Nov 24, 2009

    Hello there again
    I am glad to help out any time you need it this is what we are here for
    Thanks
    Michael (UNITED STATES NAVY RETIRED)

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  • Dodge Master
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If you use the wrong weight oil this could be a big factor 5w 30 I believe is the right weight to use.the valve cover is leaking on the plugs.The fuel pump can cut off if the oil sending unit does not read enough pressure.If the oil change had the right weight oil ,then change the oil sending unit.

Posted on Nov 16, 2009

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How can i fix the oil pump


see this tips and fix it. God bless you
The oil pump supplies oil to lubricate your engine. If the oil pump is worn or is not turning, the engine will suffer a loss of oil pressure, which may result in engine damage or engine failure.
The first sign of trouble may be a low oil pressure warning light, a drop in the normal reading on you oil pressure gauge (if your car has one), or the appearance of ticking or clattering sounds from your engine.
As a rule, most engines only need about 10 PSI of oil pressure for every 1,000 RPM of engine speed. Oil pressure will read higher than normal when a cold engine is first started because the oil is thick. Oil pressure will gradually drop as the engine warms up and the oil thins out. So normal oil pressure on a warm engine cruising down the highway is typically 30 PSI up to 45 PSI.
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The first thing you should do if any of these symptoms occur is to stop your car, turn off the engine, let it sit for a few minutes, then check the oil level on the dipstick. If the oil level is at or below the ADD line, add a quart of oil to bring the level back up to the full mark. Add as much oil as is needed to raise the level to the full mark. Then restart the engine. If the warning light remains on, or the oil pressure reading does not climb back up to its normal range, or the engine noise does not go away, you may have a bad oil pump.
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If the engine is NOT making any unusual noises and seems to be running normally, and the oil level on the dipstick is FULL, but you are still getting a low oil pressure warning light or low gauge reading, the fault could be a bad oil pressure sending unit.
The oil pressure sending unit is mounted on the engine block. On some applications, there is a spring-loaded pressure-sensitive diaphragm with a switch inside the sending unit. This switch completes the circuit to the low oil pressure warning light if oil pressure drops below a certain threshold. The unit may stop working if the diaphragm inside fails, if the switch is stuck, if the small hole that allows oil to enter the sending unit becomes plugged, if there is a loose, corroded or broken wiring connector at the sending unit, or there is a fault in the wiring circuit between the sending unit and warming light.
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On many Ford vehicles that were built from 1980 through the 1990s, the oil pressure sending unit has two switches, a low pressure and a high pressure. These vehicles also have an oil pressure gauge, but the reading on the gauge is not a true indication of real oil pressure. As long as the pressure to the sending unit is between high and low, the gauge will read normal. If oil pressure drops and trips the low pressure switch, the dash gauge will now read low. Or, if oil pressure goes up and trips the high switch inside the sending unit, the dash gauge will read high. Consequently, don't rely on the oil pressure gauge for an accurate reading in these vehicles. It is only a gross indication if the oil pressure is low, normal or high.
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