What is a 'Hold in Relay'?
July 7th, 2009, 08:24 PM
#1
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Join Date: Mar 2007
Location: Waco, Tx
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What is a 'Hold in Relay'?
Does anyone have any experience with this relay used on a 69 442. It is the relay located on the right (pass) fender and is wired in with the Compressor feed. It is called a 'hold in relay' and has two leads coming to it and one coming out to the compressor. Three pronged relay. This was the one relay missing from the car. I finally found a listing for an AC relay with the correct configuration, but I would like to know what it does, before I buy it.
Ross
Ross
July 8th, 2009, 05:23 AM
#2
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Location: Plano, TX
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I have heard some years of cars wired so the AC compressor is held engaged a few seconds after the engine was shut off, to reduce the chance of run-on or dieseling.
Not sure if yours had this 'feature' or not, but a possibility...
The 72 had no relay in the compressor circuit.
Not sure if yours had this 'feature' or not, but a possibility...
The 72 had no relay in the compressor circuit.
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