Coolant Temperature Sensor

[95k2500]

Is there a way to tell if these are legitimately failed? I understand they can cause all sorts of issues with running rich, etc, but I would want to confirm the part is bad before shelling out $30 for another.

While my truck was running, I popped off the two wire plug and it definitely bogged and started running poorly without, also kicked the SES light... reconnected and it cleared up and light went out... so am I to assume the part is still good?


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[TylerZ281500]

that would be a safe assumption, take it out and clean it might help if theres some build up giving a false reading maybe, otherwise if your truck acts like it hates life when unplugged then itd be a safe assumption.

what are you trying to conclude by finding out if your cts is bad or not? is your guage not working or something? theres also a second sensor on the side of your head that is just for the sensor if i remember correctly.

 

[lkfldredneck]

I think you put a paperclip in the plug and itll run like its 40*f

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[98_k1500]

Paperclip makes it run like its hot, unplugged reads -40°

 

[lkfldredneck]

Paperclip makes it run like its hot, unplugged reads -40°

Thats right, i got it mixed up

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[454cid]

I found a new Delphi on Amazon for $15 shipped, awhile back. It didn't change the way my truck runs, Though. I cleaned the original up with a wire wheel, and am saving it.

I've seen a temperature and resistance chart for it, and checked a few spots. It seemed okay, but I think it's kind of hard to check accurately.

 

[98_k1500]

I honestly think mine has a dead spot in it. On warm up, as the temp gauge passes about 120°, truck floods terribly. By the time its up to about 130, it straightens out and is fine.

 

[lkfldredneck]

I honestly think mine has a dead spot in it. On warm up, as the temp gauge passes about 120°, truck floods terribly. By the time its up to about 130, it straightens out and is fine.

Weird.. Get a new one and see how that works. If it doesnt, clean it and repackage. Give it back sayin you didnt use it or it was the wrong one

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[98_k1500]

I got a snap on modis scanner at my disposal. One of these days i'll plug up to it and look at the CTS voltage as it warms up.

 

[95k2500]

that would be a safe assumption, take it out and clean it might help if theres some build up giving a false reading maybe, otherwise if your truck acts like it hates life when unplugged then itd be a safe assumption.

what are you trying to conclude by finding out if your cts is bad or not? is your guage not working or something? theres also a second sensor on the side of your head that is just for the sensor if i remember correctly.

My truck hesitates from time to time, the most concerning is when it's under hard acceleration, especially past 2500 rpm when you are trying to climb a hill or pull a load up an incline. Trying to sort it out and want to rule out items one at a time.


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