(800) 853-2651
SHOP NOW

Water temp. Sender 986

D

DTK

Member
The temp. Gauge on my 986 pegs to the right when I turn on the key. Sometimes it will read normally, what is the best way to ck the sender? And also what is the best way to remove the sender? Thanks , DTK
 
Most are single wire devices that use a temperature sensitive resistor in the block. As the coolant heats, the resistance goes down, increasing the flow of electricity to ground, making the gauge go up. If at times the gauge goes to full scale, it indicates to me that the wire is rubbed through the insulation and shorting to ground. I would remove the existing wire from both ends, and replase it temporarily with new. If the issue goes away, I would trace the original to determine where it is shorted. then repair it and buffer the the area with tape or a plastic wire loom to prevent issues. If no difference, I would replace the sender. Jim
 
(quoted from post at 22:45:23 08/06/16) Most are single wire devices that use a temperature sensitive resistor in the block. As the coolant heats, the resistance goes down, increasing the flow of electricity to ground, making the gauge go up. If at times the gauge goes to full scale, it indicates to me that the wire is rubbed through the insulation and shorting to ground. I would remove the existing wire from both ends, and replase it temporarily with new. If the issue goes away, I would trace the original to determine where it is shorted. then repair it and buffer the the area with tape or a plastic wire loom to prevent issues. If no difference, I would replace the sender. Jim
Click to expand...
Thanks Jim , l should have said that I also replaced the main harness from the alt. back to under the cab so all tha t wire is new. Should l warm up the engine and try to back out the sender? DTK.
 
Giving advice on things to twist off is dangerous. I would probably put force on it force on it tighter and looser for 20 minutes (but not deforming it. Good
luck. Jim
 
When you have that sender out then it is a good time to replace with a mechanical one that comes with a gauge.
 
You must log in or register to reply here.

Similar threads

P
IHC 986 INSTRUMENT PANEL
Replies
5
Views
336
Donald in MN
D
T
Temp. Sensor Location
Replies
7
Views
710
Texasmark
T
gears
Ohms for 3000 sending units?
Replies
6
Views
347
Hobo,NC
Hobo,NC
J
Need help w/ a Fuel Gauge
Replies
6
Views
438
Joe (Wa)
J
T
Temp Sender
Replies
3
Views
385
Texasmark
T
Tractor Parts Tractor Manuals

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Copyright © 1997-2024 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters
Website Accessibility Policy

Back
Top