temp sensor

well i found i had a pin hole in the bypass hose, fixed it, doesnt lose coolant anymore, but its still getting hot. before the thermostat went out months ago, the temp was always at the 1/4 mark. it always stayed there, til the thermostat went out. replaced it and ever since it loves to 220 mark.. well i flushed the rad twice. fixed the bypass hose, filled with coolant, all was well i thought... well it over heated again today. lil over 220. im thinking the CTS? (coolant temp sensor) but someone said there is actually 2. 1 that controls the gauge and 1 that goes to the ecm or .something? i got lost in his ramble... does anyone know about any of this? thanks

This vehicle usually has two....single green wire to a sensor is for the gage....two wires(blk and yellow?) to the sensor for the ECM.....

You would need a scan tool to compare both sensors....

Sure you are not losing coolant that may be creating an air pocket? Cooling fan operating ok?

This vehicle usually has two....single green wire to a sensor is for the gage....two wires(blk and yellow?) to the sensor for the ECM.....

You would need a scan tool to compare both sensors....

Sure you are not losing coolant that may be creating an air pocket? Cooling fan operating ok?


no coolant loss.. its a 92 so how would i use a scanner on it? and do you know the location of these sensors?

Also, take note that the engine love to run hot too.
It is possible that the engine is just running at it's normal temperature now.

1/4 sound to me that the thermostat was faulty and stuck open.

its possible he had a 180-185 deg thermostat in there and put in a 195 like most auto stores sell. So it'll read higher on the gauge. ;)

This model isnt as bad as the newest GA's when purging air from the cooling syst!

Update, car is fixed, after having 6 mechanics rack their brains
Come to find out, the metal line coming from the overflow tank
Was clogged.

Sometimes its the simple things overlooked. Glad you got it solved !