leaking sending units....
Thread Starter
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Senior User
Joined: Nov 2000
Posts: 450
Likes: 2
From: Dallas, GA
leaking sending units....
Hey Guys,
Just thought I would let everyone in on a problem I ran in to when installing sending units for my gauge pod.
I installed the water and tranny temp, along with the oil pressure gauges.
Based on some of the reading I did on this board and elsewhere, I used the Permatex #014 thread sealant w/ Teflon. Well, 3 weeks later, and after 3 different attempts, all of the senders were leaking, especially the tranny.
After reading the fine print on the back of the tube, I realized that it said to not use near heat. I also noticed that the goop seemed to start bubbling when the engine got hot.
Today, I went to the auto parts store, and found some High Temperature thread sealant w/ Teflon from Permatex. It comes in a small tube, about a 1/3 of the size of the other.
I removed all 3 sending units, applied the new sealant, and NO LEAKS!!!!
Sorry for the long post, but just wanted to pass this along to anyone else looking at installing gauges.
Just thought I would let everyone in on a problem I ran in to when installing sending units for my gauge pod.
I installed the water and tranny temp, along with the oil pressure gauges.
Based on some of the reading I did on this board and elsewhere, I used the Permatex #014 thread sealant w/ Teflon. Well, 3 weeks later, and after 3 different attempts, all of the senders were leaking, especially the tranny.
After reading the fine print on the back of the tube, I realized that it said to not use near heat. I also noticed that the goop seemed to start bubbling when the engine got hot.
Today, I went to the auto parts store, and found some High Temperature thread sealant w/ Teflon from Permatex. It comes in a small tube, about a 1/3 of the size of the other.
I removed all 3 sending units, applied the new sealant, and NO LEAKS!!!!
Sorry for the long post, but just wanted to pass this along to anyone else looking at installing gauges.
Senior User
Joined: Oct 2002
Posts: 437
Likes: 3
From: Fayetteville (Atlanta) GA
leaking sending units....
Good Information......Sounds like something I would do !
That what is so great about this forum, everyone shares information freely. Best group of folks around.
Thanks............
Mark
That what is so great about this forum, everyone shares information freely. Best group of folks around.
Thanks............
Mark
Senior User
Joined: Dec 2002
Posts: 192
Likes: 0
From: Shamokin USA
leaking sending units....
I build race engines and have had the same problem with the lower spec Permatex. Not only did it leak near heat, it leaked everywhere. Don't know exactly what that stuff is supposed to seal. The hi-temp Permatex thread sealer with teflon works fairly well. I've had good luck with it. Check it often though for awhile, I have had leaks develop over time.
Jimmie
2003 F250SD SB SC XLT 4X4
Jimmie
2003 F250SD SB SC XLT 4X4
Post Fiend
Joined: Jan 2002
Posts: 5,859
Likes: 7
From: USA
leaking sending units....
I use "Pst " made by loctite . To this day I have never had any leaks in any fittings used on auto's or heating systems (boilers)
We used to use "blue goop" but I can't find it anymore ,problably was harmful to the enviroment.
Oh don't get me started on that!
Thaks for the info! BDDO
Rich
We used to use "blue goop" but I can't find it anymore ,problably was harmful to the enviroment.
Oh don't get me started on that!
Thaks for the info! BDDO
Rich
Senior User
Joined: Mar 2002
Posts: 164
Likes: 0
From: Lone Star State
leaking sending units....
I am glad you posted this, I picked up some permatex and Ampsoil last week to do my diff fluid change this week, I don't want any fluids leaking out of my rear end!! HeeHee! I am going to check the temp on the permatex tonight when I get home. I don't know how much heat the diff puts out but for $9.95 a quart on the ampsoil and the cost of a a new diff, it's worth buying the higher temp permatex.
Elder User
Joined: Mar 2002
Posts: 505
Likes: 0
From: Mountaintop USA
leaking sending units....
Bryan, what is the Permatex item number on the tubes of the sealant you used. I did my senders quite a while ago and I don't believe I have any leaks. I'll be checking again though after reading your post. The one I used is Permatex Thread Sealant with Silicone, item #80631 14A I bought it in a 1 oz tube. Thx.
Tuned
Joined: Feb 2003
Posts: 335
Likes: 1
From: Houston, TX
leaking sending units....
Any chance you could show exactly where you did your sending unit connections. A pic or something?
I'm planning on pyrometer, oil pressure and tranny temp. I'm having trouble picturing how to do the sending unit connections. A link to detailed instructions would be fine, if you know of one.
I'm planning on pyrometer, oil pressure and tranny temp. I'm having trouble picturing how to do the sending unit connections. A link to detailed instructions would be fine, if you know of one.
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Thread Starter
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Senior User
Joined: Nov 2000
Posts: 450
Likes: 2
From: Dallas, GA
leaking sending units....
xanthias,
If you go to http://www.eurekaboy.com/f250/apillar.htm Stan has pictures of the sending unit locations. I used the same locations as him. If you have additional questions, I'd be glad to help you out. Just go to the bottom of the page and click on the link to go to the sender installation pics.
Quikirk,
If you go to the site I listed above, you will see the tube of sealant that I originally used. I think it is the same as you mentioned. I will check the item # on the new sealant and post it tomorrow...
If you go to http://www.eurekaboy.com/f250/apillar.htm Stan has pictures of the sending unit locations. I used the same locations as him. If you have additional questions, I'd be glad to help you out. Just go to the bottom of the page and click on the link to go to the sender installation pics.
Quikirk,
If you go to the site I listed above, you will see the tube of sealant that I originally used. I think it is the same as you mentioned. I will check the item # on the new sealant and post it tomorrow...
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Thread Starter
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Senior User
Joined: Nov 2000
Posts: 450
Likes: 2
From: Dallas, GA
leaking sending units....
The new sealant that I used is Permatex High Temperature Thread Sealant #59214.
It comes in a .20 ounce tube.
I'm sure that other people have been able to get the Permatex Thread Sealant w/ Teflon to work just fine, but in my case, it was a no go...
Hope this helps!!!
It comes in a .20 ounce tube.
I'm sure that other people have been able to get the Permatex Thread Sealant w/ Teflon to work just fine, but in my case, it was a no go...
Hope this helps!!!
Trailering
Joined: Feb 2003
Posts: 22
Likes: 0
From: Bedford, Indiana
leaking sending units....
That's odd. I use that same thread sealant on everything and have never had a problem.
Now I'm thinking about removing that picture of the sealant from the A-pillar article. What do you guys think?
Now I'm thinking about removing that picture of the sealant from the A-pillar article. What do you guys think?
Thread Starter
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Senior User
Joined: Nov 2000
Posts: 450
Likes: 2
From: Dallas, GA
leaking sending units....
Hey Stan,
Glad to see ya!!!!!
I wouldn't worry about the pic... If it worked fine for you, then obviously it works...just not in my case.
Your site has been a great resource... Came in very handy with the gauges, and most helpful with the alarm/remote starter.
Thanks for all the help
Glad to see ya!!!!!
I wouldn't worry about the pic... If it worked fine for you, then obviously it works...just not in my case.
Your site has been a great resource... Came in very handy with the gauges, and most helpful with the alarm/remote starter.
Thanks for all the help
Junior User
Joined: Jan 2003
Posts: 97
Likes: 0
From: Troy, NY
leaking sending units....
I have a question on this topic. I am planning in installing a tranny gauge in the spring and plan on using the port on the transmisison. I was wondering, when you remove the plug from the tranny, does any fluid come out, if so how much? If fluid comes out, how do you dry it out. I would assume that the threads must be dry for the sealer to work correctly?
Secondly, someone mentioned that their sender was too long. I am installing an SPA dual gauge and was wondering how long is too long on the sender? I would like to know if my sender is going to be too long before i try to install it.
Secondly, someone mentioned that their sender was too long. I am installing an SPA dual gauge and was wondering how long is too long on the sender? I would like to know if my sender is going to be too long before i try to install it.
Thread Starter
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Senior User
Joined: Nov 2000
Posts: 450
Likes: 2
From: Dallas, GA
leaking sending units....
Hookspacken,
Regarding the tranny fluid= Yes, as soon as you remove the plug from the side of the tranny, fluid will start to come out. It won't be pouring out, just running down the side of the tranny, hopefully into a drain pan or towel.
Here is what I did. Get the sending unit ready with the thread sealant, and just do the quick "switcharoo"!!! Pull out the plug, and put the sending unit in. You will loose very little fluid. It's ok if some of the fluid gets on the threads while putting it in.
Regarding sender length- I put in the AutoMeter gauges in mine, and the sending unit did not bottom out. I have read other posts where different sending units did bottom out, but I don't remember the brand.
Regarding the tranny fluid= Yes, as soon as you remove the plug from the side of the tranny, fluid will start to come out. It won't be pouring out, just running down the side of the tranny, hopefully into a drain pan or towel.
Here is what I did. Get the sending unit ready with the thread sealant, and just do the quick "switcharoo"!!! Pull out the plug, and put the sending unit in. You will loose very little fluid. It's ok if some of the fluid gets on the threads while putting it in.
Regarding sender length- I put in the AutoMeter gauges in mine, and the sending unit did not bottom out. I have read other posts where different sending units did bottom out, but I don't remember the brand.