I got to working on my 7 this yesterday replacing the master clutch and slave cylinder. I took it to a friends shop and everything went well.



But earlier today i noticed that my oil indicator in the dash was not showing ANY oil pressure. At first it scared the **** out of my pants. But pulling into my garage and doing some investigation I found that there was plenty of pressure and that nothign was wrong.



So my question is how would I fix the indicator. We could have unnententionally disconnected a wire around the clutch and made it disfuncntion. Where and how would i get this fixed.



Thanks.



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you knocked the wire off, it should be floating around by the oil pressure sender, its the round gold thing under the oil filter

Scared the crap out of me when that happened to me. Just one little wire.

Mine is hooked up, but the oil pressure gauge jumps to the very max as soon as you turn the key to ON, so I know something's wrong. Improper grounding? Faulty Oil-Sending Unit? What?

Bad sender unit.

my gauge shot up like that too, only it took the spring inside it with it when it died...kinda dangled like dirk diggler if ya know what i mean. Had to replace the entire cluster, but hey, at least now i only have 98,000 miles https://www.nopistons.com/forums/pub...IR#>/smile.png

ok thanks for the replies.



But I can see a wire but can't figure if its in all the was. Is it a wire next to the oil filter?



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yes

LoL!! I outta get a new gauge cluster too. Back in '94 my CarFax reports my car only have 94k miles on it...gauge reads 174k now! >_<



LoL..











Oh yeah, I have an oil-sending unit that came with my S5 core, right now the S4 oil-sending unit is hooked up, is it possible to switch them and it'll read correctly?

not sure but dont think so...best to go with what was made for your car anyway

Whoa. Dont jump the gun here. If the gauge is grounded straight through the chassis, and not through the condensor, the gauge will do that. The condensor for the oil pressure gauge is bolted onto the clutch slave.

aftermarket is more accurate anyhow. upgrade, perhaps?

The condensor is a tiny little black box right? Has the hold to ground it n' all? Where do I ground it to?

Yes, thats the condensor. Bolt it to anything grounded. It comes on one of the bolts holding the clutch slave on. There is a wire from the harness that grounds out through the condensor. You cant just ground that wire, or your oil pressure gauge will read maxed out as soon as you turn the key on.

yeah, that's how my gauge got destroyed

Sounds like the problem. I'll try to fix it. Thanks https://www.nopistons.com/forums/pub...#>/biggrin.png

ok. The golden wire is connected. but the oil level still doesnt go up.



There is a black wire that comes off an addapter that is loose there could that be anything?



Am I missing anything?



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Is the adapter a little black box with a bolt flange? If so, thats the condenser I was referencing above.

Like mazdaspeed said. Just to clarify. Check to see that the sender is connected. Also, check to see that you have the little black box connected(that was on your slave). Only after you have both of those things done start looking elsewhere for problems.



Gregory

Everything is hooked up properly on my car, wiring wise. I think maybe the unit is just bad.



For a split second today, when I turned the key to ON, it jumped up as usual, but when I was starting it it went back down a little bit. I dunno! There's not come kind of fuse for the oil-sending unit is there? o_O

If there was a fuse and it was blown, the oil pressure gauge would always read zero.



If the condensor is there, and hooked up properly, its time to move onto other things. It could be a bad sending unit.

hopefully its not a short under the dash

ok, I found the condenser. There is no bolt flange on the end of the wire but I put it directly on the slave.



But now when I start my car the indicator shots straight up and stays there.



Now whats the matter?



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