Cooling Temperature Sensor

[Frank K.]

What is the correct GM part number for a 1993 base car?( located on water pump)

[Keith B.]

Re: Cooling Temperature Sensor

Before changing this sensor double check the conector for corrosion and continuity of both wires from the ECM and he ground is good.

[Frank K.]

Re: Cooling Temperature Sensor

I need the sensor first and the service manual has no means of support to check it out. So a new GM for my year would be a quick screw in . As far as corrosion the electrical connector looks fine but who knows what the water pump internals hold! As far as grounds the re find.

[Keith B.]

Re: Cooling Temperature Sensor

That's odd becouse my 94 FSM had the steps to check it out. I had my trouble with replacement sensor there.

[Frank K.]

Re: Cooling Temperature Sensor

I found a pre 90 sensor tester Actron CP9087 The two Z28 convertibles would just cut at any time on the highway that i owned so that is why i have this.

[Keith B.]

Re: Cooling Temperature Sensor

How are you determining you need a sensor?

[Joe L.]

Re: Cooling Temperature Sensor

What is the correct GM part number for a 1993 base car?( located on water pump)

Frank------


What is the configuration of the connector on the sensor? Is it 2 pins or is is a blade and a pin?

[Frank K.]

Re: Cooling Temperature Sensor

Two pin on water pump

[David H.]

Re: Cooling Temperature Sensor

What is the correct GM part number for a 1993 base car?( located on water pump)

A downloaded fiche I have, shows 1992-96 LT1 Thermostat as pn 12555290. 180 degree (AC-DELCO #131-100)

Dave

[Frank K.]

Re: Cooling Temperature Sensor

Not looking for thermostat. On the water pump there is a two pin connector which reads coolant temperature whichin closed loop tells computer to lean or rich fuel.

[Joe L.]

Re: Cooling Temperature Sensor

Two pin on water pump

Frank------


Are you sure that the pins on the sender are two EQUAL-SIZED PINS? A photo of it, especially of the pins, might be helpful.

[Frank K.]

Re: Cooling Temperature Sensor

Two round pins on the sensor Bayonet type (horizontal side by side)

[David H.]

Re: Cooling Temperature Sensor

A downloaded fiche I have, shows 1992-96 LT1 Thermostat as pn 12555290. 180 degree (AC-DELCO #131-100)

Dave

Frank,

2nd try. Coolant Sensor for 1992-96 LT1 is 25037332. AC DELCO #213-77.

Dave

[Joe L.]

Re: Cooling Temperature Sensor

Dave and Frank-----


That's what I thought, too. However, the GM #25037332 temp sender has, side-by-side, a blade terminal and a pin terminal. That's not as Frank describes his. I've just hit a "brick wall" in coming up with the correct temp sender. It might be a GM #19189478 or GM #19187357.

[Frank K.]

Re: Cooling Temperature Sensor

The 213928 gm was my choice !