Question about Ford Cars & Trucks
If the oil pressure warning light is coming on, then you will need to replace the engine's oil pump.
Posted on Nov 02, 2012
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Posted on Jan 02, 2017
The HPOP (high pressure oil pump) is right under the filter housing. There are 2 lines that distribute the oil to the cylinder heads. The o-rings on those fittings go out. Kit is available from Ford or International. You will need a special wrench to get to the fittings though.
Posted on Jun 23, 2008
check the high pressure return line behind the fuel filter the clamp securing it will vibrate and rub a hole in the line. i was quoted a couple of hundred to replace the line, i put a small piece of fuel line over the hole and secured it with a worm gear clamp. no leaks in over 2 years
Posted on May 05, 2009
I would say to replace the sensor and see if it helps. I assume you had the truck scanned and that was the only problem. The speed sensors usually relate to the ABS and Transmission shift points.
Both Autozone and Oreillys will scan for FREE. After you replace the sensor, get a water spray bottle and go around all the seams you can find on the engine while it is running. If the RPM changes you have found the vacuum leak that is causing the miss.
There is also another test that can be done electrically. It is the cylinder balance test. This directly relates to the compression of each cylinder.
While all the Diagnostics that showed the fault are accurate, the onboard computer does not tell everything.
Usually it can miss the mechanical issues like a vacuum leak, or a bad valve in a cylinder that is firing good electrically without the whole bank running rich with the unburned fuel from that one cylinder. This is because it averages the total burn rate for each bank.
On the V8 engines there are cavities below the Airhorn for EGR flow. If your V10 is similar you may want to look under the Airhorn gasket and clean the cavities. It should only cost your time and a gasket.
Posted on Jun 15, 2010
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