I was just wondering how do you get access to the oil sending unit on an 86 4cyl?

And how can I tighten or remove it because I think its gone BAD? I want to try and do it myself but if its a big job I will leave it to the professionals.
Thanks

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Led Zeppelin and Fieros go well together.

The oil pressure sending unit on the Duke is screwed in to a port in the side of the block, underneath the intake manifold.

Unplug the wiring connector, put a wrench on the hex flange behind the sending unit's body, and ....

[This message has been edited by dguy (edited 08-03-2007).]

Is it easier to access it from the top or under the car?

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Led Zeppelin and Fieros go well together.

It's easier to see what you're doing from below. Whether or not it's easier to r&r the sending unit from below than from above, varies as much as the individuals who own Fieros do.

Yeah I guess its your own preference really. I can reach it from above but theres no room and If i take the heat shield off by the tranny fluid majigy I can get it from below.

Another question is... Do I tighten the 9/16" nut on the back of the unit or the big 1 3/16" black part? (the actual sending unit itself)

I can tighten the small 9/16" nut but it wont seem to get tight it just wants to keep spinning.
Thanx for your input btw!

Ok omit the part about the 9/16" nut keep spinning, I got it to go tight and that part is good. Where to go from here?

[This message has been edited by FIER086 (edited 08-03-2007).]

quote Originally posted by FIER086: Yeah I guess its your own preference really. I can reach it from above but theres no room and If i take the heat shield off by the tranny fluid majigy I can get it from below. Another question is... Do I tighten the 9/16" nut on the back of the unit or the big 1 3/16" black part? (the actual sending unit itself) I can tighten the small 9/16" nut but it wont seem to get tight it just wants to keep spinning. Thanx for your input btw! Ok omit the part about the 9/16" nut keep spinning, I got it to go tight and that part is good. Where to go from here?

Always use the 9/16 part. The large black plastic part will break if too much torque is applied. What kind of a problem are you having with your oil pressure?

[This message has been edited by 2farnorth (edited 08-03-2007).]

oil pressure looks great but the leak is definitely coming from the oil sending unit. I'm not sure if its the unit itself or the tube that goes into it.

I just tightened her down not too much and it still leaks but not as much as it did before. It use to be a steady drip but not anymore. Any ideas?

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Led Zeppelin and Fieros go well together.

Tube that it goes in to?? On the 4 cyl it screws directly into the block. You can try some pipe dope on the upper threads but leave the lower ones bare so they will ground to the block. I do not recommend teflon tape.

If it is the sending unit itself that is leaking it will have to be replaced. They are not considered repairable.

2farnorth, sorry i forgot it sits right on the block on the 4's. Yeah I guess I better take it in and get it fixed. The weird thing is my pressure seems normal. Oh well, at least I slowed it down and no where my leak is coming from now. Thanks everybody, other input is welcome!

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Led Zeppelin and Fieros go well together.