Do both senders have heat shrink covering most of the metal bits? I have a sip plug ring and it's exposed up to where the wire screws in; the TTO plug ring has heat shrink right down to the ring itself.
- is it in the path of the fan blown air?
Got a picture of their locations?
Are they both the same brand? Just wondering if the actual thermocouple is reading differently rather than just location.
A mate did a test with two different brands of gauge under the plug and go two different readings. Can't recall what the actual numbers were, it was some time ago.