i have a 90 hatch with a 98 ls motor with a b16 tranny....runs nice, doesnt over heat. this moring i installed an oil pressure gauge. while installing the gauge, i had to remove the two clips that plug into a sendor. i believe the sendor has something to do with coolant. the sendor is located next to the oil pressure sending unit, and right next to the oil filter. if i were to...lets say not plug these clips in all the way, would this cause my temp gauge on my cluster to read wrong, and bounce up and down?


oh and i know for a fact that its not over-heating...

 

Well if you only had intermitent (sp?) connectivity, then yes it would bounce up and then fall all the way to the stop. The coolant temp sensor is just a metal piece whos resistance varies with temp. So if it loosens the ECU sees that as infinite resistance to ground.

 

ahhhh thank you. nice time on the response by the way. you must love that refresh button