1993 Ford Thunderbird Engine Fan?

  • Thread starter Thread starter Rosszor
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Rosszor

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I have had a the car for about 1 and a half years now and not a single problem. I replaced the stock air box filter with a K&N cone air filter about a month or so ago, though I don't think this has anything to do with my problem. But anyway, yesterday I was just driving, then all of a sudden my engine fan starts to work overtime. Really fast and loud. It wasn't a change that happened after I turned it off and restarted, it was in the middle of going up my driveway. Anyone have any ideas on what the problem is?
Was hot yesterday, but the 3 or 4 days before that were hotter, and no problems. Also, when I turned the car on this morning, from being in a nice cool garage all night, fan was still going crazy.
 
Most Thunderbirds have a Dual speed cooling fan.
It sounds as though yours went into high speed because of a temperature issue. Was it HOT yesterday weather wise? Is your coolant level up to full? The low speed fan should come on at 222F and go Off at 214F but if the engine temperature goes above 230F, the High speed fan kicks on and drops back to Low speed at 224F.
Since it is still doing it today when Cold, It could be one of three things. The Engine Coolant temp sensor for the Computer is bad, More likely it is the Constant Control Relay module but could also be the PCM (Computer) but not likely. The Constant Control relay module should be mounted to the upper radiator support. It is a rectangle Black box.Try gently tapping on it as the High speed fan relay inside it might be sticking.
 
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