Oil pressure/Water Temp Sender Help

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Jul 30, 2009 | 08:15 AM

#21

clk_cpa

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From: Los Angeles

Quote:

Originally Posted by clk_cpa

cool. thanks for the help. I want to replace the stock sending unit as well since it doesnt function well, looks really old and I'm going to be draining the coolant anyways. I looked on the Autozone site and I'm a little confused. They have 2 products listed. One is a coolant temp sensor and the other is temp switch. The stock sending unit looks like the temp switch. Where does the coolant temp sensor go? Isn't there only one temp sensor for the 2.4l's?

Temp Switch:
http://www.autozone.com/autozone/cat...erature+Switch

Coolant temp sensor:
http://www.autozone.com/autozone/cat...erature+sensor

Can anyone shed some light on this? Is the Coolant temp sensor for the thermostat?

Jul 30, 2009 | 09:31 AM

#22

BigBluePile

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From: Sedro-Woolley, WA

This is the one that goes to the gauge on your SR5 dash:

This one is for the computer and its below the throttle body:

Jul 30, 2009 | 09:46 AM

#23

clk_cpa

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From: Los Angeles

Quote:

Originally Posted by BigBluePile

This is the one that goes to the gauge on your SR5 dash:

This one is for the computer and its below the throttle body:

Thank you. That clarifies it. I should probably change the sensor as well, just in case

Jul 30, 2009 | 09:00 PM

#24

Keith B.

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Quote:

Originally Posted by clk_cpa

Thank you. That clarifies it. I should probably change the sensor as well, just in case

There are 2 temp sensors below the TB: The one for the ECU, and the other one called the 'cold start time switch"(even though it's a temp sensor) which controls fast idle when cold. The 3rd temp sensor for the gauge, as has been stated, is the one on the thermostat deck, mid engine.

Aug 22, 2009 | 09:03 PM

#25

jprich

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When I got my used 87, there was an extraneous temp (looking) sender sitting on top of the valve cover, just laying there. Poked around under the hood and could not find a place to install it. Found the gauge sender installed where it belongs and nothing else was within reach of the wire attached to it. But, alas, one day it came loose and fell out from under the hood on the road. Now I have a bare wire in its place. Pulled it up over the TB so it would be easier to see.

I've been debating whether I should replace it ... of course, not knowing what it was would make it difficult.

Joys of buying a 20+ year old vehicle.

jp

Attached Thumbnails

Oil pressure/Water Temp Sender Help-loose-wire.jpg

Last edited by jprich; Aug 22, 2009 at 09:06 PM.

Aug 30, 2009 | 06:16 AM

#26

volcomdork182

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i am pretty sure ( i cant see it anyways) that is the wire for the one that is drilled on top of the inlet tube or the one just above the thermostat. It looks like yours isn't there or just wasn't drilled. its either that or the one further back in the mid engine.

Last edited by volcomdork182; Aug 30, 2009 at 06:18 AM.