Manual Temp gauge Questions

[thedave360]

So I finally installed a manual temp gauge. It took the place of the sensor for the computer...not for the stock gauge. So with the connection to that sensor disconnected, the electric fan runs constantly. I know that fan is only SUPPOSED to run when the engine gets too hot. Is it a problem to let it run all the time? Is there another place that I can install this manual gauge probe, and leave the computer's sensor where its supposed to go? :hmm:

 

Thanks for the help

[HOrnbrod]

So I finally installed a manual temp gauge. It took the place of the sensor for the computer...not for the stock gauge. So with the connection to that sensor disconnected, the electric fan runs constantly. I know that fan is only SUPPOSED to run when the engine gets too hot. Is it a problem to let it run all the time? Is there another place that I can install this manual gauge probe, and leave the computer's sensor where its supposed to go? :hmm: Thanks for the help

 

So you installed the sensor for the new temp gauge in the thermostat housing and removed the ECU aux fan sensor? Are you installing a mechanical temp gauge to replace a non-working stock cluster gauge? And yes, it's not good that the aux fan runs constantly; will cause excess wear on it as well as putting additional load on your electrics. You have two choices; move the sensor for the new mech temp gauge to the left rear of the head where the OEM temp gauge sensor is, or wire your aux fan to a manual switch. If you need a wiring diagram for your 92 to do this, let me know. :cheers:

[Eagle]

Ya know, the ECU uses that input for more than just controlling the auxiliary fan. Put the stock sensor back in and hook it up, and find another place for the mechanical gauge sensor. Without the stock sensor, your ECU is "flying blind" and you probably aren't getting out of open loop mode operation.