After the engine is running for about 30 seconds the oil pressure gauge will start reading pressure. I want to know if something could be wrong with the oil sending unit or could the screen on the oil pump be clogged? If so is there any way that it can be cleaned without taking the oil pan off?
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Re: oil pressure guage sticks
U need to have a manual pressure guage hooked up to verify that the oil pressure is within specs and comes up to spec within a few seconds, don't fool around here u could ruin the engine if the oil pump has a problem, if all checks ok replace the sender, if that doesn't do it the guage needle is sticking, I have seen both at the Ford dealer I work at.
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It could be anything from a faulty oil pressure gauge, to a mechanic's trick to keep you from finding out the engine is soon to expire. They sometimes unplug the gauge on purpose. Fords can run a little low on oil for a while without signs or problems. I'd start by checking your oil. If it is not low on oil, there is a sensor on the engine block you might want to replace, It should have a wire hooked to it. That is your sensor. If this doesn't work, go to the gauge itself.
First off I wouldnt drive your car until you make sure that you have indeed oil pressure and that the gauge is a false reading, driving your car if in fact it has no oil pressure will severly damage your engine, but firstly i would check the oil pressure switch its located on the passenger side of the engine right back from the oil filter make sure the connector is clean and free from oil and corrosion if the connector appears to be in good shape take a paper clip and insert it between the 2 terminals inside the connector your oil pressure gauge should peak at 80 PSI that tells you that your gauge and all related wiring are good and in working condition, secondly remove the oil pressure switch and hook an manual oil pressure gauge up to you engine and start the engine the guage should have a oil pressure reading anywhere from 30 PSI to 55PSI depending on engine temperature if theres oil pressure on your manual gauge replace the oil pressure switch with a new unit, if you still have 0 PSI on your gauge then stop your engine immediatly and start looking at your oil pump and lubricating system for a problem.
DIAL IN CAB COULD BE AT FAULT, NEED TO GET ANOTHER DAIL GUAGE AND CONNECT TO SENDER, IF SAME COULD BE SENDER, IF STILL THE SAME, PRESSURE VALVE IN BLOCK STICKING DUE TO DIRT OR U/S, OR AT WORSE !!! ENGINE WORN, THIS WILL BE CONSTANT IN MOST CASES, FAULT IN GUAGES ARE NORM INTERMITANT.
now unless there is a very loud knocking of the motor which would mean that the engine's top end was not getting any oil I would say that your oil guage is sprung and needs replacing. a high pressure rating would indicate a restriction in the oil flow pasdt the sending unit or a plugged oil filter. if the filter were plugged you would know it because your enging would run tight in no time at all. replace the guage itself... please rate this........thanks