jocar

I believe both sensors on the right side of the block on the cooling hose/thermostat housing send one signal to the computer and one to the guage. My guage reads too hot or cold sometimes after up to temp for years(I know) and believe the sensor is messed up because the fan goes on and off as it should. Which one do I replace, upper or lower and what is it called on a parts site? thank you.

flagreen

The top one is for the guage. Tell me what model, year and engine you have and I'll give you the part number.

jocar

1984 4000q , just went on ebay today. Thank you.

flagreen

The part number is 049919501B. Sorry to see you're selling it! :-)

jocar

thanks for the help!