Temperature sesors

[john.0_o]

Are both the coolant temperature sensors in a 1990 resistive,or is one of them a switch type?

 

[92 Sunbird LE]

Both are resistive.

Testing : http://www.autozone.com/autozone/re...epairGuideContent.jsp?pageId=0900c1528003bb28

http://www.kovsh.com/media/library/312/Sensors America.pdf

Doug in P.R.

 

[john.0_o]

Thanks for the links.

I was looking at parts on Oreilly's and a switch type was an option so I wasn't sure.But looking at the Haynes manual it looks like the later ones used a switch type sender for the fan and the newer ones control the fan with the computer.

 

[92 Sunbird LE]

I remember the old 80's XBody cars ( Citation , etc.) had a one wire grounding out sensor for the fan .

Once the car got to certain temp, the sensor grounded out to the block to complete the circuit, a simple fix was just to ground the sensor wire when the sensor went bad. ( more of a simpler fan control system........ IMO)

Doug in P.R.

______________________________

 

[john.0_o]

Yeah,a lot less to go wrong and a whole lot cheaper to repair.

 

[TrojanMan]

I've been planning to try a snap disk thermostat from a furnace on the intake manifold. Any thoughts??