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First make sure it is not the filter that is leaking. Remove the old filter and install a new filter that is the correct one. Apply oil to the gasket and tighten exactly 3/4 turn after it makes contact with the mounting surface. Tighten any moreor any less and it may leak. If that is not the problem, then I would suspect the valve cover gasket may be leaking. Another possiblility is a leaking oil pressure sending unit.
What else can I help you with?
Location of fuel filter on 1989 Ford Thunderbird sc?
in the tank
Is there a check engine light and a service engine soon on a 1989 Ford Thunderbird?
There is a CEL, Check Engine Light, on the 1989 Thunderbird.
Oil filter for 1989 Ford Laser s?
It located above the sump plug
Where is the oil sensor located for the 1989 Pontiac Sunbird?
right above the oil filter
Where is the oil sensor on a 1989 Lincoln Continental?
right above where the oil filter is located
What is wrong when a 1989 Ford Thunderbird hesitates after it warms up and acts like it is out of gas but fuel pump and filter are OK?
Check the fuel pressure regulator or the fuel injectors.
Where is the oil sending unit on a 1989 Toyota pickup V6?
above the oil filter to the back alittle
Where is fuel filter on 1989 Jeep Wrangler?
Drivers side frame rail just above and forward of the tank.
A 1989 305 what is the cylinder shaped thing above the oil filter with a spot for a plug on it?
OIL PRESSURE SENDING UNIT
Where is a transmission located on a 1989 Ford Thunderbird?
behind the engine in the transmission tunnel...
Where is the spout connector in a 1989 thunderbird 3.8 cu-in?
Behind Passenger Headlamp.Weatherall'sAutomotive
What is the Fuel pump pressure for a 1989 Ford Thunderbird?
35 or 39 PSI
