wkilleffer
Jedi Knight
Offline
Hello,
A few years ago, I took the Smiths gauge out of my 74 MGB because it was ending up at full hot no matter whether or not the probe in the engine block was new or used. I talked to a man who used to repair gauges for Sunpro and he said to expect to find two resistors inside, and that one of them has failed.
Sadly, it wasn't so simple. I opened the gauge up, and found what appears to be a resistance winding. Nothing looked amiss.
Now, could this problem be caused by a grounding issue in the circuit somewhere? Just out of curiosity, I connected an ohmmeter to the terminals on the back of the gauge, and got a reading of .4 ohms.
I'm about to flush and refill the cooling system, and would like to get the Smiths gauge back in and working again. Any ideas or suggestions would be appreciated.
Thank you,
A few years ago, I took the Smiths gauge out of my 74 MGB because it was ending up at full hot no matter whether or not the probe in the engine block was new or used. I talked to a man who used to repair gauges for Sunpro and he said to expect to find two resistors inside, and that one of them has failed.
Sadly, it wasn't so simple. I opened the gauge up, and found what appears to be a resistance winding. Nothing looked amiss.
Now, could this problem be caused by a grounding issue in the circuit somewhere? Just out of curiosity, I connected an ohmmeter to the terminals on the back of the gauge, and got a reading of .4 ohms.
I'm about to flush and refill the cooling system, and would like to get the Smiths gauge back in and working again. Any ideas or suggestions would be appreciated.
Thank you,