Location of coolant temp sensor

Location of coolant temp sensor

Postby ccookie66 [OP] » February 29th 2012, 5:25am

Hello, I need to replace the coolant temp sensor on my 1993 chevy astro. anybody know where the sensor is located? I think I might have an idea, if I follow the radiator hose, is the sensor behind the air intake box/tube? I'm not really sure, any help would be appreciated.
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Re: Location of coolant temp sensor

Postby satrunsc2 » February 29th 2012, 5:50am

hey same as my van i have a 93 tbi fallow the top hose to engine and it is beside it i think yellow and black wire on top be sure to drain syste first or you will have coolent all over engine :screaming: . hope this helps
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Re: Location of coolant temp sensor

Postby RECox286 » February 29th 2012, 3:04pm

There are two coolant temp sensors on the 4.3. The one for the computor is on the passenger side of the water outlet housing (T-stat).

The one for the gage is inbetween spark plugs number 3 and 5 on the driver side cylinder head. Make sure you procure and change the

proper part.

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Re: Location of coolant temp sensor

Postby redfury » March 1st 2012, 6:23am

The one on the side of the motor is a single wire that is attached to the sensor, don't try to pull it off, you have to disconnect it from the harness, not the sensor...not sure why it was designed that way.
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Re: Location of coolant temp sensor

Postby Lumpy » March 2nd 2012, 3:29am

redfury wrote:The one on the side of the motor is a single wire that is attached to the sensor, don't try to pull it off, you have to disconnect it from the harness, not the sensor...not sure why it was designed that way.


On my 89 that sensor connection is a regular push on, pull off spade thingie, not a pigtail.


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