Question about Ford Expedition
Changed oil and filter,changed oil pressure switch but light still on and annoying beebing sound still every few seconds
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Posted on Jan 02, 2017
SOURCE: Audi 80 oil pressure light
i think from memory that the oil pressure switch is at the back of the cylinder head, if its not there it will be located just above the oil filter, these switches are very cheep to buy and can be bought from any good motor factors. You are right to suspect the switch, its the first thing to eliminate before bogging your self down with more complicated and expensive problems.
Posted on May 14, 2008
The fuel pump on that model runs through the oil pressure switch so that if the truck looses oil pressure,It kills power to the fuel pump to prevent engine damage.you need to find the cause of the low oil pressure reading(possibly a bad oil switch).That would be the cheapest place to start,or have it checked with a mechanical gauge.Good luck,
Posted on Mar 30, 2009
SOURCE: 04 ford freestar has p0193
I will start by saying that the battery will need to be replaced. A battery should not go dead for at least 20 minutes with every thing on. There is a 100 amp fuse that will blow if there is something drawing enough current to kill the battery in seconds. Even minutes. So that tells me that the battery is going to leave you stranded even after you get the stalling problem fixed.
P0193= Fuel rail pressure sensor circuit high input.
P0174= Too Lean on Bank 2
P0174 too lean could be a number of things. It could be that the air filter needs to be replaced. The Mass Air Flow sensor is bad. It could be a vacuum leak from a vacuum line or the intake leaking. It could be a bad O2 sensor. If it is a vacuum leak, the best fastest way to find it is to spray starting fluid around the intake and vacuum lines while the engine is running and if it revs up, that is where the vacuum leak is.
As far as the P0193 that is more than likely the fuel pressure regulator or sending unit. But with the van stalling, I would say it is the fuel pressure regulatro.
Posted on Jan 05, 2011
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