Temp Sending Unit Removal???
Thread Starter
Navigator
Joined: Feb 2011
Posts: 9
Likes: 0
Temp Sending Unit Removal???
Don't ask how I did it, but while cleaning up under the hood, I broke the Temp Sending Unit located on the driver side of the block. I want to replace it but want to know, is it just a simple removal and replace? What's the chance of breaking it off and creating further problems? I really don't want to relocate it to the manifold as I like keeping that area as clutter free as possible. Any suggestions or experiences would be appreciated.
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,114
From: Crossville TN
If you have enough metal left to get a solid grip on it for removal, it's a simple fix. You need to drain about a gallon of coolant from the radiator petcock before you remove it, so that you don't spill it out on the floor and make a mess in the engine compartment. If you drain it in a clean bucket (and it is not 'old' coolant), just reuse it when done.
Le Mans Master
Joined: Aug 2006
Posts: 7,417
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From: mount holly NC
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2019 C3 of Year Finalist (appearance mods)
Removing and replacing the temp sending unit should be easy but finding a replacement unit with the correct resistance may be the hardest part.
Melting Slicks
Joined: Aug 2010
Posts: 2,487
Likes: 10
From: Palm Beach Florida
St. Jude Donor '12
Thats the problem I think I have!!! I just posted this question on the "General" forum. While putting my headers on, I broke the tabe for the connection. I went and bought a new one for 10 bucks. Now my gauge does'nt work. I tested the wire and it has power. What should I ask for or look for when I go to get another one?
Instructor
Joined: Nov 2006
Posts: 130
Likes: 1
From: Wylie TX
Search for Temp sending unit. there are several threads outlining issues with gauge accuracy and replacement temp senders. Willcox and Roger have extensive threads on testing and tips for how to calibrate them. They are must read for accurate gauges.
Heel & Toe
Joined: Oct 2012
Posts: 19
Likes: 0
From: South Daytona Florida
I'm in the process of replacing this temperature sending unit but there doesn't seem to be enough room to maneuver between the headers, spark plugs and engine mount to loosen it up. Is there a special tool or wrench that you use to remove this sending unit?
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Former Vendor
Joined: Aug 2006
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From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
The best suggestion I can give anyone is to find an original because NO ONE makes a correct sending unit that I am aware of and I’ve tried all of them.
Usually when the senders stop working it is from the oil drying up and the thermister (a resistance disc in the bottom of the sender) corrodes and stops making contact with the sender. If you cut the top out of the sender, remove the internal parts, clean them, add oil, re-assemble and epoxy the top back together you’ll get years of life out of it.
Your best bet is to find an original one working or not and repair it or your old one. The tops can be epoxy’d back on and the sender will work just fine.
On another note: I received a brand new batch from another supplier in for testing a few weeks ago but I’ll assume these will fail just as the others have and will post later. I’ll have to update this later.
Team Owner
Joined: Sep 2006
Posts: 31,172
Likes: 4,249
From: Westminster Maryland
Hi bac,
WELCOME!!!! First post!
I guess a little more info would help.... what car, what engine, what headers?
This thread was about the passenger's side sender.... since you mention the engine mount, are you struggling with the driver's side which is more directly above the mount?
Regards,
Alan
WELCOME!!!! First post!
I guess a little more info would help.... what car, what engine, what headers?
This thread was about the passenger's side sender.... since you mention the engine mount, are you struggling with the driver's side which is more directly above the mount?
Regards,
Alan
Last edited by Alan 71; Nov 6, 2012 at 04:25 PM.