I have a newly rebuilt TAMD41B. When we started the new motor the temp gauge never read above 100F and the alarm started to whistle as soon as the motor warmed to the touch.
I checked grounds, multi-pin connections at the gauge cluster and the motor, re-crimped cleaned and re-attached the wires at the senders on the thermo housing, etc. The needle on the gauge moves when the ignition is turned on but never reads over 100F.
I disconnected the brn/wht wire (alarm?) at the forward sender and the alarm quit. I also tried disconnecting the tan wire (gauge?) at the aft sender. Nothing has worked.
How do I troubleshoot this problem? Is there a bad/good resistance reading I should be getting when I jump the sender wire and sender with the ignition off using my voltmeter? Do I need to drain coolant to replace senders?
I suspect a ground fault, but all appears well?? Is it the gauge, senders, or...?
Also, my tach jumps up to 5000 when I start the motor and bounces all over for 10-20 minutes before it settles and reads properly. It has done this for years. Is it a bad tach or faulty ground or ...??
Many thanks in advance for your help!!
-GS
I checked grounds, multi-pin connections at the gauge cluster and the motor, re-crimped cleaned and re-attached the wires at the senders on the thermo housing, etc. The needle on the gauge moves when the ignition is turned on but never reads over 100F.
I disconnected the brn/wht wire (alarm?) at the forward sender and the alarm quit. I also tried disconnecting the tan wire (gauge?) at the aft sender. Nothing has worked.
How do I troubleshoot this problem? Is there a bad/good resistance reading I should be getting when I jump the sender wire and sender with the ignition off using my voltmeter? Do I need to drain coolant to replace senders?
I suspect a ground fault, but all appears well?? Is it the gauge, senders, or...?
Also, my tach jumps up to 5000 when I start the motor and bounces all over for 10-20 minutes before it settles and reads properly. It has done this for years. Is it a bad tach or faulty ground or ...??
Many thanks in advance for your help!!
-GS