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Can anyone provide me with instructions/pix of where the ECT sensor is on a 1993 Civic DX Sedan & how to replace?

Thanks.

Bill

 
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It's the only sensor sticking out of the thermostat housing. It has a 2 wire connector. The thermostat housing is where the lower radiator hose meets the engine block.

-Disconnect the 2P connector
-Unscrew the ECT
-Using a new o-ring, screw in the new sensor
-Reconnect the 2P connector
-That's it, you're done.

 
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Lazlong,

Thanks for the instructions. I will check it out today.

One stupid question: given the location, do I have to drain the coolant before I remove the sensor?

Thanks again for the help.

Bill

 
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Lazlong,

I'm not sure that I have the right sensor ID'd. I found a copy of the service manual & I think the sensor I need to change out is the TW sensor. From the diagram it looks like that sensor is not sticking out of the thermostat housing. Am I right or nuts?

 
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It's where one of those hoses meets the engine. It should have a red/white and a green/white wire.

 
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Got it. I'll look this morning.

Do I have to drain the radiator before I remove the sensor?

 
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^^ Naw. You'll get a little leakage but, shouldn't be a lot. Just be sure to re-fill and burp the system if there is significant leakage. You'll need to burp the system regardless as you cracked the system open.

 
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Cool. I just had the system flush & filled recently so that is good news.

I am a bit of a rookie at this, so when you say "burp the system" what exactly does that mean?

 
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Put the radiator cap on loosely, run the car at operating temp for a few minutes, then tighten the cap.

 
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Got it. Thanks again. Will let you know how this all turns out.

Bill

 
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Lazlong,

Well I think you called it right. Had a helluva time getting the stupid switch off of the sensor and when I did, guess what? There was oil inside the switch and the end of the sensor. Asked my mechanic about it & he said it looked like the distributor had leaked and been replaced before I got the car.

At any rate, it's been a week now & now stalling at all. So many thanks for helping me with my quirky little Civic. Now maybe I can just enjoy driving the damn thing instead of futzing with it for all of these irritating issues. Next thing is to put a muffler on it (it's got a Thrush aftermarket that is noisy as hell) and then I'm done for a while.

Bill