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The Ford E-Series (also known as the Ford Econoline and Ford Club Wagon throughout various stages of its production) is a range of full-size vans produced by Ford Motor Company.

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1999 Ford E 250 oil pressure sensor

I’ve recently replaced my oil pressure sensor. The issue I had was on attempting to start the vehicle, the van would only crank but not start. I also noticed the oil gauge was on zero. After researching online, I replaced the oil pressure sensor, with excellent results. Fast forward a month later, and the exact same issue is occurring. I can test the switch but I am curious, what other sensors can cause this, if any? Also, the best way to diagnose if the electrical is failing?

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Hey Pat.

I’m just not so sure the oil pressure sensor is responsible for the “turns over but won’t start” aspect.

I’d suggest a more direct strategy to diagnose the no start issue, first. Ensure you’ve got fuel pressure, see if the spark is being generated and transmitted, etc. There are a number of things that could be your problem, I just don’t think the OPS is one of them.

Over time and miles, normal wear increases clearances between lubricated internal parts (bearings, journals, etc.), thus the oil flows more freely, and with less pressure. So it’s no surprise if your gauge indicates low oil pressure, once that engine has logged some serious miles. Perhaps the sending gauge/sensor is ok, and your actual oil pressure is just really low (engine is worn).

Maintaining the right oil level would be a good idea, and if the sensor/gauge worries you, remove the sensor and temporarily install an oil pressure test gauge, and check your actual oil pressure. When you remove the test gauge you can opt to install a plug in the port where the sensor was installed, and forget about it.

Happy to look into more specifics regarding the “no start”, if you want. Just provide information on your engine.

Good Luck.

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Tony, Thank You for the reply. I was also looking into the possibility that my fuel pump, or my throttle body was having an issue as well. I had recently begun experiencing a sticking effect, as I accelerate. I was in the process of going after that, when this issue occurred. I'm assuming this is my throttle body causing that issue. Is it possible that the TB could be the culprit for not starting now? Also, I do get a code of 0401/0402 and am aware that it's caused by a bad DPFE sensor. I guess that's why I was looking into failed electrical. Thank You again for any assist you can give me on this, it's very much appreciated.

P.S. it's a 1999 ford e250, 5.4l triton 2v FISOHC. It has approximately 259k miles.

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Thanks Pat. First, DPFE = changes in pressure of the EGR system. I tend to regard this, in this situation, as a secondary issue, occurring perhaps as result of some other primary failure, and may which clear up on it's own, once the real problem is remedied.

The throttle body and/or position sensor (TPS) can be a player in all this, as problems here can manifest symptoms such as flashes of check engine light, surging rpm at idle and/or at running speeds, hesitation upon acceleration, bucking & jerking, and engine stalling. The throttle operation accounts for 1 (the air intake) of the 3 requirements for starting the engine, so it cannot be overlooked, but ensuring you have fuel pressure and spark should be checked first.

I can type all night, or I can simply refer you to a great resource that'll guide you through the right way to go about these diagnostics. Simply go to:

TroubleshootmyVehicle.com\How To Test A No Start Condition(Ford 4.6l, 5.4l).

Keep us posted.

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