TooMany2cvs
Active Member
- Posts
- 254
- Location
- Welsh borders
The coolant temp gauge in my 2.25 3brg is being a bit... static. Not really, really static and not moving. Just... not doing much.
Turn it on, stone cold, and it reads the lower end of N. I've checked the sender, and I'm getting about 100ohm at the sender terminal to earth, gauge disconnected. Disconnect the sender, and the gauge dives for cold.
When it's up to temperature, it's getting as far as the other side of the letter N... I've just put a new 82deg 'stat in, and I'm definitely getting 82deg at the 'stat housing, and the 'stat is definitely opening. It's going up no further than that - the coolant's new, and the rad looks good. At that temp, I'm seeing about 60ohm at the sender.
I think the hot reading's probably about right - but the sender seems to be very reluctant to read correctly cool. Can anybody do me a two-second favour and point a multimeter at the sender on theirs, please, before I just replace the thing? Hot and cold. 100ohm to 60ohm sounds like a very narrow range, so I'm 90% that's the problem.
Turn it on, stone cold, and it reads the lower end of N. I've checked the sender, and I'm getting about 100ohm at the sender terminal to earth, gauge disconnected. Disconnect the sender, and the gauge dives for cold.
When it's up to temperature, it's getting as far as the other side of the letter N... I've just put a new 82deg 'stat in, and I'm definitely getting 82deg at the 'stat housing, and the 'stat is definitely opening. It's going up no further than that - the coolant's new, and the rad looks good. At that temp, I'm seeing about 60ohm at the sender.
I think the hot reading's probably about right - but the sender seems to be very reluctant to read correctly cool. Can anybody do me a two-second favour and point a multimeter at the sender on theirs, please, before I just replace the thing? Hot and cold. 100ohm to 60ohm sounds like a very narrow range, so I'm 90% that's the problem.
