Honda Accord (1990 - 2002) Includes 1997 - 1999 Acura CL

replacing a water temp sensor

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Old Oct 12, 2009 | 04:07 PM
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Bruce Banner's Avatar
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Default replacing a water temp sensor

93 accord lx
How do I go about replacing this?
I have the part in my hand.
I took a pic, is it the green plug on the right?

Last edited by Bruce Banner; Oct 12, 2009 at 04:26 PM. Reason: additional
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Old Oct 12, 2009 | 04:38 PM
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Default Re: replacing a water temp sensor

looks like it will twist off with the correct wrench size. lefty-loosey righty-tighty
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Old Oct 12, 2009 | 04:44 PM
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Default Re: replacing a water temp sensor

Yes, but I wanna make sure that is the right part to take off
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Old Oct 12, 2009 | 05:16 PM
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Default Re: replacing a water temp sensor

Your car should have three coolant temperature sensors. That one on the housing to the upper radiator hose should be the sensor to turn the radiator fan on after the car is shut off, if a certain temperature is exceeded.

There is another one on the thermostat housing which is to turn the radiator fan on when the engine is running, if a certain temperature is exceeded.

I believe both these radiator fan switches are removed with a 24mm wrench, after you unplug the electrical connector. You may have to add some coolant and bleed air from the system afterward.

The third sensor is a smaller one, under the distributor (IIRC), which is for the instrument gauge and ECU.

Here is a link with some info.

http://techauto.awardspace.com/overheating.html

Note: As the link states, a broken thermostat can disable the radiator fan.
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Old Oct 12, 2009 | 05:42 PM
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Default Re: replacing a water temp sensor

The one shown in the picture (on the water housing outlet) is for the "A/C Fan time switch". The other one (on the thermostat housing) is for the "radiator fan". The two switches are different and not interchangeable.
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Old Oct 12, 2009 | 06:10 PM
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Default Re: replacing a water temp sensor

sooo I'm not looking at the right one then?
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Old Oct 12, 2009 | 06:21 PM
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Default Re: replacing a water temp sensor

Originally Posted by Bruce Banner
sooo I'm not looking at the right one then?
Well, you never stated the reason for trying to change the sensor.
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Old Oct 12, 2009 | 06:28 PM
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Default Re: replacing a water temp sensor

Originally Posted by redbull-1
Well, you never stated the reason for trying to change the sensor.

It's what the CEL told me

https://honda-tech.com/forums/honda-accord-1990-2002-2/93-accord-cel-2507380/
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Old Oct 12, 2009 | 06:41 PM
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Default Re: replacing a water temp sensor

Okay, your other thread said code 6. Code 6 would refer to this sensor:
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Old Oct 12, 2009 | 07:36 PM
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Default Re: replacing a water temp sensor

Originally Posted by redbull-1
Okay, your other thread said code 6. Code 6 would refer to this sensor:
TY, those pics help alot. As for swapping the part out, should I be careful of coolant coming out when I remove the sensor?
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Old Oct 16, 2009 | 03:31 PM
  #11  
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Default Re: replacing a water temp sensor

just gave it a go, looks like the dizzy might have to come out.
I like hondas, but their wire harnesses sometimes **** me off.
Kept squeezing the harness but couldn't pop the dam thing out.
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Old Oct 17, 2009 | 06:53 PM
  #12  
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Default Re: replacing a water temp sensor

After 2 nice deep cuts into my finger from a screw driver slipping and a couple of hours, I finally got the dam sensor out and replaced.
Didn't have the tools I needed to get the dizzy or dizzy cap out.
The back screws were a bit difficult to get to with the tools I had.
Sensor is replaced with a new OEM one and I unplugged the batt for about 15 mins to clear the ecu, codes etc..
Hopefully this fixes the issue
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