Question about 2002 Buick Rendezvous

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Where is the oil pressure switch located

Low oil pressure light came on and checked under car and in engine compartment and theres oil everywhere. i jacked the car up and turned the engine over to see and its seeping out of an area and i think its the oil pressure switch but im not sure

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Is the sending unit kind of skinny?Black with a wire connector on it?If it has oil comeing from it,that would be the oil sending unit,they will leak sometimes when they go out.I hope this was helpful,If so ,please let us know,thanks.

Posted on Oct 07, 2009

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Here's a link to your oil pressure switch,here's the part.As you can see there are 2 types,one for light and one for gauge.
  • When the oil pressure is either high or low it will either turn the oil light "on" in the dash or move the gauge to the extremes
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Where do i find the oil pressure switch on the toyota tarago is there one or to I replaced the one on the side of the motor near the starter motor but the red oil light is still coming on


First, do not keep driving if the oil warning light is on or your oil pressure gauge has dropped. Stop the engine, let it sit for a few minutes, then check the oil level.
If the dipstick shows a full oil level, then low oil obviously isn't your problem. The oil pressure may be low because of a worn or broken oil pump, a plugged oil pickup screen in the engine's crankcase, possibly a plugged oil filter or excessive bearing wear. Or, the oil pressure may be fine but the oil pressure sending unit has failed. Further diagnosis will be required to determine what's wrong.
Perform electrical tests on oil pressure switch http://www.clarks-garage.com/shop-manual/elect-19.htm
Replace pressure switch as the cheapest means of repair to see if the lights go out .
The pressure switch will be located on the engine block.

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Whats the purpose of an oil pressure switch can it determine weather oil leaks from your grand prix or not?


The oil pressure switch or sending unit is a unit that receives an electrical signal showing what your cars oil pressure is.And yes it does partially does let you know when there is a problem somewhere in the oil system.For example if your filter gets clogged up your oil pressure will go down and then go up when you accelerate.If there was a leak in the system first you would probably see the leak And if the oil pump or oil pump shaft were to break you would have no oil pressure.So you can see the importance of having an oil pressure switch.I feel there are 2 guages that are important to watch are your oil guage and water temp guage they can tell you allot about how your car is operating.

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I need to know where the oli sending unit is and how to replace it?


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Fig. 1: Location of the oil pressure switch-3.3L and 3.8L engines


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Fig. 2: Location of the oil pressure switch-3.0L engine


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Fig.: Oil pressure switch (sending unit) schematic


The low oil pressure warning lamp will illuminate when the ignition switch is turned to the ON position without the engine running. The lamp also illuminates if the engine oil pressure drops below a safe oil pressure level. To test the system, perform the following:

  1. Turn the ignition switch to the ON position.
  2. If the lamp does not light, check for a broken or disconnected wire around the engine and oil pressure sending unit switch.
  3. If the wire at the connector checks out OK, pull the connector loose from the switch and, with a jumper wire, ground the connector to the engine.
  4. With the ignition switch turned to the ON position, check the warning lamp. If the lamp still fails to light, check for a burned out lamp or disconnected socket in the instrument cluster.

REMOVAL & INSTALLATION
On the 2.4L engine, the oil pressure switch is located on the side of the engine block facing the firewall. On the 3.0L engine, the oil pressure switch is located on the oil filter adapter housing, next to the starter motor. On the 3.3L and 3.8L engines, the oil pressure switch is located next to the oil filter.
  1. Locate the oil pressure sending unit on the engine.
  2. Disconnect the negative battery cable.
  3. Disconnect the pressure switch electrical harness.
  4. Using a pressure switch socket, deep-well socket or wrench, loosen and remove the pressure switch from the engine.
To install:
  1. Install the pressure switch into the engine and tighten securely.
  2. Attach the electrical connector to the switch.
  3. Connect the negative battery cable.
  4. Start the engine, allow it to reach operating temperature and check for leaks.
  5. Check for proper oil pressure switch operation.

Hope this helps (remember to rate this answerr).



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Oil pressure switch location on 1999 chev cavalier


The oil pressure switch relays the oil pressure in the engine to the instrument cluster. The switch will illuminate the OIL PRESSURE light if the oil pressure drops below 2psi (13 pa). The switch is usually located on the side of the engine, under the intake manifold on the 2.2L engine and on the side of the intake camshaft housing on the 2.3L/2.4L engine.


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Fig. 1: The oil pressure switch is located on the engine block under the intake manifold and is accessible from underneath the vehicle-2.2L engine

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Fig. 2: Oil pressure switch location-2.3L/2.4L engine


Other, the low oil level switch activates the OIL light in the instrument cluster when the oil level in the pan goes below a certain level. The switch is mounted on the oil pan.


Hope this helped (remember rated this post).

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Low engine oil pressure can cause a fuel pump to shut off. Its a safety feature included in most vehicles any more to prevent running an engine with little or no oil and burning up the engine itself. Make sure the engine has enough oil, and then look for the oil sending unit. Could be bad, or going bad.
Try replacing the fuel filter. I would imagine it to be located under the car, inline with the fuel lines, otherwise consult your owners manual for the location.
Look for any broken ground wires in and around the engine compartment and possibly around the fuel tank itself. Could be dirty, corroaded, or just not making a good connection.
The last thing, I can think of would be a bad fuel pump. I've taken fuel pumps out of the fuel tank before where trash was cloging the first filter and rendering its capability, before finally burning up.

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