Re: need to change oil pump in a 98 murcury sable 3.0 ohv
I am working on the same thing on somebody else's car and trust me it is alot of work. you have to remove all the pulleys and accessories, the valve covers, oil pan, and u have to do all this just so u can remove the front engine cover. unlike most cars where the oil pump is located in the oil pan, this is mounted in a weird position and it is rotated by the crankshaft. i am not yet finished but i know once i get the front engine cover off i have to remove the timing chains also. in my opinion it is not worth the time or the money. i hope somebody finds this information useful.
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Have you checked if the fault is your oil filter,probably the filter pressure valve inside doesn't keep any pressure? or the other thing is a possibility of the pressure pipes are clogged or semi clogged.
usually if the magnet in the sensor comes out it destroys the cam position shaft,(it should have a half moon shape when u remove the sensor from the cam pos/oil pump drive. if the half moon is damaged or missing u must replace the cam pos/oil pump drive, and yes it is timed with the engine. wot i have done is try to locate where the half moon was on the drive it usually leave a trace of where it was. now index where the half moon is at remove hold down bolt and remove the driver assy. install the new drive, clock the half moon shaft to match the one u just removed once u get the half moon shaft where u want it and the oil pump rod alines and the whole housing is down install the hold down clamp. now to get rid if that check engine lite youll have to plug a scanner in and look at the live data adjust the cam position till u have plus or minus 2 degrees
First, with the engine running, squeeze your upper rad hose to try and close it off for a few seconds. When you release it, if your water pump is functioning properly, you should feel a surge of coolant go through it. If that is okay, try loosening one of your heater hoses with the engine running, and see if you can get any air to come out. Sometimes... quite often, in fact, the heater core will become air locked and not allow any coolant into it.