Engine/Transmission (1994 - 1998) oil pressure

[NByrne]

I have this problem with my oil pressure dropping to zero when i stop driving and and try to maneuver. It goes to zero for about 5 second then goes back to 40 or so. I can't hear any noises in the motor at the time. Please help

 

[markdixon]

Mine did the exact thing but only when I towed something or ran it on the interstate hard. Did some test and came to the concluesion the sending unit was bad. Replaced it and never had another proublem.

 

[ramman]

cleaning oil pressure switch rheostat

Mine did the same thing,replaced under warranty lasted about a year,same thing again,last week I took the old unit and removed the black plastic cover with a screwdriver,careful not to tear the oring while separating the cover,then clean the excess lubricating grease from the wire resistor,mine had piled it up on the low end of the wipers range of motion. You can put an ohm meter on it and apply air pressure with a regulator in line and see if the resistance is linear with the pressure,I think the resistance ranged from 80 ohm to 40 ohms. Mine works fine for now my be a temporary fix only time will tell. By the way this was on a 98 12 valve I think the sensors changed that year in preparation for the 24 valve. This may not work on other years but with the price of the switch it's worth a try. Tim

 

[JohnE]

Replaced a bad unit about a month ago. It was doing the same of dropping needle and idiot light glowing. Replacement started acting up about 2 weeks ago.



BTW, don't wait too long before replacing a bad sending unit. Mine ruptured the seal and puked about 2 quarts of oil. Also found the source of the myster oil leak, too. Yep, sending unit. Dealer only charges me around $22