: Any thoughts about my temp gauge doing crazed things,, changed oil and filter (doubt this has any thing to do with it but you know what they say about the last thing one has tinkered with) started car (1983 633) and temp gauge went nuts pegging far right , pegging far left.. for as long as i was at idle and not moving, checked the connections on all the sensors ,did not affect the gauge, deceided to drive anyway,, the gauge stayed steady at the edge of the red did not continue to jump around... (the normal running temp is about half) the next clue in this puzzler is that the speedo is not working.....need input before i contact click & clack... and worse yet take it somewhere for the ultimate paying experience....