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Re: no oil presure
If its an internal oil pump the cam will run it. Are you sure its the pump or is it the sending unit, is the engine making noise like there is no oil pressure, like lifter noise, rocker noise, knocking? Pumps do go bad, they have gears in them, a gear could have worn down or broke, or maybe a seal blew out, and it won't hold pressure. whatever, if its bad it will have to be chg.
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check the drive system for the distributor
ford employ a shaft that drives the oil pump and if the oil pump is under undue stress, it strips the gear or breaks a shear pin
all the gear is driving is a distributor shaft and in the first instance could be a seized bush for the shaft but with replacements failing I would be looking further afield , like an oil pump
im sorry there is no pressure off.
running pressure is low because.
1: wrong oil, or AF in oil, or brake fluid from jiffyboobs. or water.
2: fuel in oil , bad bad bad.
3: dumping additives it it. bad.
4: BEARINGS IN ENGINE SHOT. (warn bad)
5: THE GAUGE FIB'S.
I NEVER NEVER NEVER trust car gauges, i use MINE>(in hand)
i also test my hand gauges, (ask)
No! If the engine is running fine and sounds normal the light might be coming on for some other reason. If you remove the wire from the sending unit does the light go out? That wire if it contacts ground anywhere it'll turn the light on. Melted to the exhaust is where you might find it. Next if the light seems to be working OK isto remove the oil sending unit and momentaryly crank the engine and see if any oil comes out. If not you've got troble. Was the oil screen on the oil pump truly dirty? Things that can happen is a partical of something ( a timing chain tooth ) gets in the oil pumps presure regulater and holds the piston of the oil regulater open. This makes the oil pressure quite low. Before buying anything expensive make sure you have a problem first. with the oil pressure switch removed connect a pressure gauge to the port ( of course if the lasttest of just leaving it open did'nt spray oil out then your into the pump) If theirs no pressure your investagating the pump it'self. The drive can break the pump can be broken an like I said earlier the regulater can be stuck open or thekey came out and the regulater is open ( it's part of the pump ) If your not quite sure what your looking at, go the the store and get the new pump. Your old one should look the same. Until youfind the problem don't drive the car anymore unless you decide there is oil pressure and the lght is wrong.
oil pressure switch.
You will want to get a repair manual for this repair, there's just too many things to note, and you can get a repair manual for around $20 - $25.00. haynes manual for your car is based on a complete teardown of vehicle. any auto parts store has these books, especially auto zone. good luck,
Do not drive it if the idiot light is on. regardless of reason, the engine is not getting proper lubrication. This is a well known problem for passats, where faulty oil pump design creates sludge that clogs up the oil lines. See if a complete oil replacement ( not just oil change), including a solvent and carter cleanup, and then replacing the oil with synthetic oil cures the problem. Otherwise, you will have to take it to the dealer for oil pump inspection, and probably, replacement.
Look on the back side of the block to see it it's there between firewall and engine, or take it to a auto parts store and tell them you want to replace the oil pressure switch then ask them to show you were it is and buy it from them. This was common for GM products, it was a safety to keep from burning up motors since customers were to lazy to check oil level but the switch's do go out and they won't run.