Temp sending unit for 1999 Astro

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Fishfreek
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Temp sending unit for 1999 Astro

Post by Fishfreek » Wed Sep 18, 2013 11:38 pm

Could someone tell me where the temp sending unit is located on my 1999 Astro?


Thank you in advance.

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Stroverlander
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Re: Temp sending unit for 1999 Astro

Post by Stroverlander » Thu Sep 19, 2013 6:36 am

Your year should have two, one on the LH cylinder head and one near the thermostat housing. One feeds the pcm and one feeds the gauge, you probably want the one near thermostat housing.

Later model '03-'05 (some '02?) X engines deleted thermostat area coolant temp sensor as gauge is is now pcm controlled.

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2004 Astro LT AWD Stroverlander

Fishfreek
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Re: Temp sending unit for 1999 Astro

Post by Fishfreek » Thu Sep 19, 2013 9:50 am

Thank you, The pics help a lot.

I am hoping it is the one for the gauge. My gauge is stuck where the temp never drops below 200° even first thing in the morning on a cold start. I have a new thermostat and I can tell it is working so I am hoping it is this temp sensor.

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Re: Temp sending unit for 1999 Astro

Post by Stroverlander » Thu Sep 19, 2013 7:58 pm

If no code for faulty temp sensor and the gauge is malfunctioning, then the sensor on the head is the one you probably want.
2004 Astro LT AWD Stroverlander

Fishfreek
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Re: Temp sending unit for 1999 Astro

Post by Fishfreek » Thu Sep 19, 2013 9:39 pm

I covered all bases and had both replaced.

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