Crankcases and PCV Valves
Oldsmobile Cutlass Supreme
Late Model 1979-New Ford Mustangs

Where is the PVC valve located on a 1989 Olds Cutlass Supreme?


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2004-06-18 15:45:17
2004-06-18 15:45:17

"Remove this only when cold (caution injury & vehicle damage" It is under your engine intake manifold plenum (the to metal assembly on the engine) almost center of the valve cover on the rear bank (closest to the fire wall). To change this you must rock the engine forward. You may need be able to remove this w/out removing the intake manifold. If you do be very carefull of the spider web thin vacuum lines under the manifold. If you remove the intake manifold you may need to purchase the intake manifold and any other gaskets and seals.


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The fuel pump in bothmy 1988 and 1989 olds cutlass supreme sl are in the fuel tank they're ALWAYS in the fuel tank!! haha

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There are two fuse panels on the cutlass supreme. One is under the hood on the passenger side over the wheel well, the other is located in the glove box you will need to remove the lower insert no tools required, should just pull out.

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The PCV valve is located in the rocker cover (valve cover) Once you locate it pull up on the hose that is connected to it. Remove the PCV valve and put new one in. Reinstall in rocker cover.

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There are two fuse panels in the 1989 Olds Cutlass Supreme. The "inside" panel is inside the glove box, in front of the passanger. The "under hood" panel is located above and forward of the passanger side front wheel. There is also a dedicated 20A "ECM" fuse located inside a small compartment containing the fuel pump relay, under the hood on the driver side.

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