OIL PRESSURE CHANGES ALL THE TIME

FORD WINDSTAR
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NILESH
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I HAVE A FORD FAIRMOUNT 1998 WITH 89000 KMS AND HAS 4 LITER ENGINE. THE PROBLEM I AM FACING WITH THIS CAR IS THAT WHEN I APPLY BRAKES TO CAR TO STOP AT A RED LIGHT SIGNAL OR TO STOP IN TRAFFIC JAM AFTER STOPPING THE OIL PRESSURE INDICATOR INDICATES THAT PRESSURE IS DROPPING DOWN AND IF MY CAR IS IN STEADY POSITION AND ENGINE IS ON THE PRESSURE GOES ON VERY LOW AND SOME TIME THE LOW OIL WARNING LIGHT ALSO COMES UP. AND WHEN I DRIVE THE CAR OIL INDICATOR ARROW GOES UP AGAIN. I HAVE CHECKED THERE OIL IS FULL IN THE CAR. AT THE STAGE WHEN THE OIL INDICATOR HAS DROPPED DOWN IF I SWITCH OFF THE AIR CONDITION THEN THE INDICATOR ARROW DOES NOT DROP AS MUCH AS IT WOULD HAVE DROP WITH AIR CONDITION ON. AIR CONDITION OR THE CAR HAS ALSO SOME PROBLEM IT STOPS WORKING WHEN CAR IS ON FOR A TIME AND IS GOING ON A SPEED ABOVE 50KMS TO RESTART THE AIRCONDITION I HAVE TO STOP THE CAR FOR A WHILE AND THEN AIR CONDITION STARTS AGAIN IT STOPS AGAIN WHEN I GO ON THE HIGH SPEED.
Jan 24, 2007 at 11:03 PM
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DANH
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This sounds like your a/c comp. is loading down the engine at idle RPM. It could be clutch bearings or the compressor itself going bad.
Jan 25, 2007 at 8:08 AM