Temperature Sending Unit Chevy Astro Van.

[JMac101]

Where is the Temperature Sending Unit located on a 1991 Chevy Astro Van with a V6 Motor?
A friends gauge stopped working in his and he would like to change the sensor, but we can figure out where it is located.
Thanks.

 

[cchase]

It's likely the gauge, not the sender. The sender for the gauge is on the drivers side of the block near the front of the vehicle.

 

[jstutz]

Originally Posted By: cchase
It's likely the gauge, not the sender. The sender for the gauge is on the drivers side of the block near the front of the vehicle.

I believe under the first two plugs.

 

[gonzo]

Originally Posted By: JMac101
Where is the Temperature Sending Unit located on a 1991 Chevy Astro Van with a V6 Motor?
A friends gauge stopped working in his and he would like to change the sensor, but we can figure out where it is located.
Thanks.
4.3 ?

 

[mechjames]

I believe its on the drivers side near the back of the exhaust manifold, remove the doghouse from the inside and look at the left side.

 

[JMac101]

i got it out and swapped it but the gauge still doesnt work. I changed the temp sending unit and the thermostat and still no gauge activity.

 

[mechtech2]

You should have simply checked the resistance of the present unit, before getting a new one.
Now, wiring, connectors, or the dash gauge are next.

 

[JMac101]

your right but the electrical connection snapped off the old one anyway so either way it needed replacement.

 

[mechjames]

There might be two temperature sending units. One for the Engine Computer and one for the gauge. I know the one for the gauge is near the drivers side exhaust manifold.

 

[moklock]

The temp sensor for the guage is usually a 1-wire sensor.

The sensor for the ECM has a 2-wire weatherpack type connector with a locking tab on it.

The OE gauge sensors with a nail head shaped post on the sensor end sometimes had connector corrosion problems.

Usually a replacement sensor will require you to splice on a spade connector if it is one of those types however.