Oil pressure sending unit issues
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Fleet Mechanic
Joined: Jul 2013
Posts: 1,997
Likes: 237
From: NE Ohio
Oil pressure sending unit issues
I attempted to remove my sending unit to T in another oil pressure gauge with it. (460 with the sending unit on back of engine behind manifold)
Well evidently the PO stripped the sending unit because the wrench just slipped the minute I tried to turn it.
I'm going to see if I can get a pipe wrench into this tight **&^&*^ spot and get it freed.
Anyone have any other tricks in getting it removed?
(screwdriver thru it and try spinning it? I'm thinking it will just end up ripping the top off but I might be able to get a grip with something than once the bell is off?)
Thought about leaving well enough alone and was going to use a spot next to the fuel pump to install my other gauge.
It's a pretty tight spot as well and the sending unit will not fit in that location.
I'm thinking about adding a 4+" nipple there and maybe a 90 to get clearance for the sending unit.
Would that work or would the 90 elbow mess with oil pressure reading?
It still might not work but I'm just thinking right now.
I think the only other spot I can install the sending unit is get an adapter for the oil filter adapter but that's one too many adapters for me.
Well evidently the PO stripped the sending unit because the wrench just slipped the minute I tried to turn it.
I'm going to see if I can get a pipe wrench into this tight **&^&*^ spot and get it freed.
Anyone have any other tricks in getting it removed?
(screwdriver thru it and try spinning it? I'm thinking it will just end up ripping the top off but I might be able to get a grip with something than once the bell is off?)
Thought about leaving well enough alone and was going to use a spot next to the fuel pump to install my other gauge.
It's a pretty tight spot as well and the sending unit will not fit in that location.
I'm thinking about adding a 4+" nipple there and maybe a 90 to get clearance for the sending unit.
Would that work or would the 90 elbow mess with oil pressure reading?
It still might not work but I'm just thinking right now.
I think the only other spot I can install the sending unit is get an adapter for the oil filter adapter but that's one too many adapters for me.
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Joined: Jan 2001
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From: Virginia
Elbows won't mess with the readings, there is no oil flow in this setup. I would get channel locks or something and get the old unit out of there and go buy a new one. They are famous for oil leaks from the sending unit itself.
Thread Starter
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Fleet Mechanic
Joined: Jul 2013
Posts: 1,997
Likes: 237
From: NE Ohio
Never heard about them leaking like that; the one in my 79 has yet to leak in 7 years and no idea how old it is. I even removed that one to T a mechanical oil pressure gauge and reinstalled it. Guess it's the exception?
Not to be stupid but if there isn't oil flow where sending units install, how does oil go all over the place when the nylon lines break in the mechanical pressure gauges?
But that's kind of the point of my thread, looking for tips if the channel locks/pipe wrench can't get in there to bite it enough.
Not to be stupid but if there isn't oil flow where sending units install, how does oil go all over the place when the nylon lines break in the mechanical pressure gauges?
But that's kind of the point of my thread, looking for tips if the channel locks/pipe wrench can't get in there to bite it enough.
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Joined: Jan 2001
Posts: 56,984
Likes: 2,738
From: Virginia
I have had several oil senders on other cars and trucks start leaking, and oil leaks are hard to find. So I am a little paranoid with these sending units now.
That was the problem that caused all the fires and the huge recall for Ford for the cruise control switch. It was a pressure switch on the master cylinder, and it would start leaking internally and the brake fluid would get into the electrical part of the pressure switch and cause it to overheat and catch fire. It didn't help that this was a hot all the time circuit either.
That was the problem that caused all the fires and the huge recall for Ford for the cruise control switch. It was a pressure switch on the master cylinder, and it would start leaking internally and the brake fluid would get into the electrical part of the pressure switch and cause it to overheat and catch fire. It didn't help that this was a hot all the time circuit either.
