63/64 Cadillac Website

AC: Can I jump the dash ac sensor wires without harming anything?

I have the dash top off and I want to operate the Climate Control system, but it won't engage the fan properly because the sensor is missing. If I jump the wires to regain functionality will that burn anything out?

Thanks

Norm

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Permalink Reply by Matti Roth on June 30, 2024 at 3:17am

jumping the in-car temp sensor reduces the total resistance of sensor circuit, so Confort control sees that it is very hot inside and will put full AC on. In-car sensor has the biggest impact to total resistance. (Source: CadillacTim`s AC Guide)

Electronics component shop might be able to find a correct resistor for you if you show them the table below.

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Permalink Reply by Norman Silverman on June 30, 2024 at 11:03am

Thank you.

My purpose is to run the system with the dash top off. It seems the fan will only go on low with the top removed. I am tracking down an air path issue.

When the top is on and everything is connected and HI Auto is selected, the fan sounds loud but the actual amount of air coming out of the ac ducts is not in proportion to the speed of the fan. Somewhere there is either a blockage or an improper diversion/leakage of air. I am also going to try to examine the evaporator to determine of it is blocked by leaves and debris.

Much appreciation for your input.

Norm

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