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Location 2005 Buick 3800 oil pressure sender.

My red light comes on and goes off so often it tries to keep up with my radio. So far, I cant find the sensor to check the system. Where is it and can I access it easily?

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  • dmoored Apr 20, 2009

    Thank YOU. You saved me $130. and took care of a very annoying problem.



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Look in the passenger wheel well, above the cv shaft, stuck in the timing cover

Posted on Mar 02, 2009



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3800. Where is the oil pressure sending unit located?

I'm not familiar with your vehicle. However, an oil pressure sender unit is usually located on the block, below the cylinder head.

it's more often than not a screw - in unit which may have a brass appearance and have 1 or more electrical wires coming from it.

Here is a link which will show you generic images of sender units:
oil pressure sender unit Google Search

They are -usually - just screw-in items. They are not difficult to change.

Here's a further link that may help you:
2005 Chevrolet Impala 3800 oil pressure sender unit Google Search

Feb 19, 2016 | 2005 Chevrolet Impala

1 Answer

1997 buick park avenue pigtail oil pressure 3 wires. What are the correct connections to where they suppost to connect to

white or red to far is usually far left and the colored wire is usually in centre. try it you cant hurt anything. there should be another part of the connection somwhere. Keep looking.

Oct 14, 2013 | Cars & Trucks

1 Answer

Oil pressure gage fluctuates;red oil icon stays on; alarm bell keeps ringing. I added 2 qts of oil. no change.

Hello,I can help you with your buick oil pressure problem. This is the 3800 engine correct? Is engine noisey? Would be best to install a mechnical oil pressure gauge on your engine to see if you are actually losing oil pressure or we have another problem. this tells you exactly what the engine is doing. If you do not have one the cheapest thing to try is replacing the oil pressure sending unit.if sender is defective it will cause your problem. This sending unit is above the oil filter.

Dec 12, 2011 | 2001 Buick Park Avenue

3 Answers

What causes the oil light to come on?

The oil light will come on orange if your oil level is low. The oil light will come on red if your oil pressure is low. The oil light will come on, then turn off if your oil level sensor needs replacing. Alex

Aug 04, 2011 | 2001 Chevrolet Cavalier

3 Answers

My light comes on and off low oil pressure. I had all my fluids checked and they are full. I want to no what else can be causing my light to come on

could be a malfunction of the oil pressure switch or u have not change the oil in time for some time and is sludged inside yuor engine, oil gets muddy (burn) it looks like is oil in it but is not

Apr 24, 2010 | 2002 Buick Rendezvous

1 Answer

Oil pressure gauge goes to 0 when idled, but goes

You could try thicker oil or stop using synthetic or add some lucas oil treatment or change the oil. The sender could be bad too. A diag is in order because if there is no presure the engine will soon die.

Dec 09, 2009 | Oldsmobile Bravada Cars & Trucks

1 Answer

Oil light.

cheapest thing to do is replace oil pressure sender ,unless you have an oil pressure gauge to test actual pressure,sender should be near oil filter housing could be 1 to 3 wire connector,you'll need special socket to r&r part,also make sure car idles normal when hot, if surging or low you may get light flicker in drive.

May 06, 2009 | 1994 Buick LeSabre

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