LS6427

iTrader: (2)

I have the intake off and its right there. I don't have a socket long enough to slide over the top and still reach the nut on the bottom.

Do I need to spin that silver nut portion of it near the bottom of the sensor? I wanted to ask because I keep hearing how easily these things break. I want to clean it, it has to be dirty after 12 years. Oil pressure needle has been a little jerky lately and acting wierd.

Also, the MAP sensor is the on the back of the intake, right? Is there another name for it, parts stores can't find it when I tell them MAP sensor. Might as well change that thing too while I'm in there.

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fleetmgr

Oil pressure senders take a special socket, and it's not used for anything else on the whole car. Any parts store will have it.

MAP problem is the lack of intelligent life where ever you're going. Try a real parts guy at NAPA.

2000TransAm24

iTrader: (2)

I bought the "special socket" from napa for the oil sending unit and it didn't work for me. Ended up breaking the sensor off and using an 1 1/16 socket to remove what was left. It's a 50$ sensor maybe you can find an 1 1/16 deep socket that is long enough. The new sensor is a different size, can't remember what tho.

97camaross

iTrader: (6)

I have pulled at least 50 oil pressure senders off using the special socket(you can get it at any parts store or snap-on guy) and never have one break. but if it were me and it were 12 years old I would just replace it any ways.
and you could also ask the parts guy to look up manifold absolute pressure sensor(MAP) maybe they have it cataloged under that.

http://www.oreillyauto.com/site/c/se...ird&vi=1305458

lil-bit

would that oil pressure sender make the gauge read zero sometimes even though the engine has good pressure and the dip stick is reading perfect??/?

slayerized6

iTrader: (12)

^^ if you ran your engine with 0psi oil pressure for more than 30sec, you would have major problems. So unless your engine sounds like its about to explode, your OPSU is defintly faulty

97camaross

iTrader: (6)

yes...

eseibel67

iTrader: (10)

Ask that kid at the parts store to look up your MAP sensor under the "fuel/air" subgroup. He was probably looking for it in the "emissions" section.

LS6427

iTrader: (2)

Thanks fellers.

The oil pressure is working, it just does some wierd **** frequently. Can the OPSU be removed and cleaned?

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LS6427

iTrader: (2)

Whats the symptoms of a failed MAP sensor?

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97camaross

iTrader: (6)

reduced engine power...and the OPSU can not be cleaned just buy a new one and save you the trouble

LS6427

iTrader: (2)

Well, before this coil firing issue which caused me to have to remove my intake to replace the camshaft position sensor......I had absolutely no loss of power problems. So I just sprayed the MAP sensor clean with Sea Foam spray.....I guess my MAP sensor is fine.

I'll get a new OPSU tomorrow and toss it in. My stepfather has an open-end 1-1/16" wrench that should go right over the top of the OPSU.

Thanks.

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fleetmgr

Good luck, you'll probably end up getting the socket anyway. If the wrench would work, nobody would make the socket.

LS6427

iTrader: (2)

My stepfather has these very unique tools at his work. He's an engineer at a food processing plant, he keeps all the machinery and assembly lines running. If the wrench end is thin enough around it to get inbetween the sensors' nut and the LS6 valley cover, it'll work. It looks like its maybe a 1/8" thick space. He's not sure how thick the end of the wrench is. I'm sure that tool is pretty expensive. I'll find out tomorrow.

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ae13291

iTrader: (8)

you cannot clean the oil pressure sensor but you can clean the MAP sensor, i remember mine was all oily when i removed it.

Nemesis350

iTrader: (11)

I thought i could get a wrench around it too,...and honestly? Didn't work. Get the socket, it's maybe $10 at Advance, and probably a similar price wherever they sell auto parts.

LS6427

iTrader: (2)

If they have one when I'm there tomorrow morning I'll grab one.

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LS6427

iTrader: (2)

I cleaned it pretty good with Sea Foam spray.

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Nemesis350

iTrader: (11)

Did it fix your problem?

LS6427

iTrader: (2)

My intake is still off, gonna clean it tomorrow, put the new camshaft sensor and OPSU sensor in and start it up. If its not missing anymore my problem was a bad camshaft sensor.

What I was saying earlier was that I didn't have the symptoms of a bad MAP sensor so I'm sure its fine, I just cleaned it out since its off the engine.

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