what does the oil sending unit do? - Mazda MX-6 Forum
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post #1 of 16 (permalink) Old 11-22-03, 13:33 Thread Starter
 
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what does the oil sending unit do?

I believe I have a bad oil sending unit. I was just wondering what it actually does. Thanks alot.
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post #2 of 16 (permalink) Old 11-22-03, 14:30
 
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It's just a switch for the oil pressure light on your dash. When it senses dangerously low oil presssure, the light comes on.
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post #3 of 16 (permalink) Old 11-22-03, 19:18 Thread Starter
 
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So basically there are no ill effects to the engine/etc unless I get really low oil pressure because I won't know it?
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post #4 of 16 (permalink) Old 11-22-03, 19:54
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yep...oe u may also get a false oil light

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post #5 of 16 (permalink) Old 11-23-03, 16:36
 
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it can/will leak oil, i had to replace mine, cheap and easy to fix.
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post #6 of 16 (permalink) Old 11-23-03, 16:57 Thread Starter
 
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Where is it exactly?
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post #7 of 16 (permalink) Old 11-23-03, 20:30
 
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On the V6, from under the car, find the oil filter. Then look right above that. It will have a wire (maybe 2) going to it.
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post #8 of 16 (permalink) Old 11-24-03, 8:53
 
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Its cheep replace it if it is faulty .. It will only let you down later by dripping out oil all over the place.. And it is doing a very important job by monitoring your oil pressure..
As he said just above the oil filter .. it is a hexagonal nut looking thing.. wit one wire coming from it ..
You will require large socket or ring spanner to remove it… but it only takes a min.

Last edited by Mr. MX6; 11-24-03 at 8:55.
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post #9 of 16 (permalink) Old 11-24-03, 15:32
 
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Yep. Another reason why its great to have aftermarket gauges, so you can read things 'accurately'.

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post #10 of 16 (permalink) Old 1-9-04, 14:47 Thread Starter
 
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I've read in other people's posts that it can cause a knocking from the engine. Is this true?

http://www.mx6.com/forums/showthread...t=quiet+engine (Oil Leak + Knocking sound from engine)
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post #11 of 16 (permalink) Old 1-11-04, 14:04 Thread Starter
 
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bump
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post #12 of 16 (permalink) Old 1-12-04, 12:06 Thread Starter
 
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Quote:
Originally posted by Ryde _Or_Die
I've read in other people's posts that it can cause a knocking from the engine. Is this true?

http://www.mx6.com/forums/showthread...t=quiet+engine (Oil Leak + Knocking sound from engine)

Anyone?
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post #13 of 16 (permalink) Old 1-12-04, 13:29
 
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What he heard wasn't knocking, but ticking. Higher pitched than a knock, but as you probably figured out, he wasn't real familiar with car terminology. So he blindly called it knocking.

What the noise is caused from are the lifters. They need LOTS OF OIL to stay cool and to cushion the blow of the cam(s).

It was from his oil level getting low, not because of the sending unit. Well, the sending unit was leaking so yea..... it was "technically" caused by the sending unit.

My wife isn't very religious about checking her oil, and with 190K miles on the engine, she NEEDS TO CHECK IT.

One day I drove it to work and about half way there I had rolled down the window to catch a breeze. With the window down I could hear those poor little lifters getting the crap beat off of them.

I checked the oil level and sure as hell, it was 2 qts. low. Once I added the oil the noise stopped.

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post #14 of 16 (permalink) Old 1-12-04, 17:19 Thread Starter
 
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Alrght thanks. Ya I changed my OSU and oil and had 2 things of stuff to quiet lifters and valves in there for a few days and they are just about silent. Now the only noise I have is the one coming from the power steering pump/pulley. Is there a way to turn off the power steering? So that if I didn't have any fluid in there it wouldn't mess anything up? Thanks for the help.
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post #15 of 16 (permalink) Old 1-12-04, 17:38
 
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hehe, if your running your car and that low oil pressure light turns on....your already screwed.

im back....and resurrecting my mx6. she has been sleeping for 6 years, and she is angry....
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