I have a tpi 350 ( l98) giving a code 15 and i'm wondering where the coolant temp sensor is located on the engine . if anyone can help it would be greatly appreciated . thanks .

Front of the intake manifold, near the water outlet, under the throttle body.

Look for a thing with 2 wires, a yellow and a black. That's it.

The sensor doesn't go bad so often, but the connector and wiring does develop problems. Check that over carefully, if it has issues then you can replace the sensor as much as you want, but still get codes.

thank you .

replaced the coolant temp sensor and runs perfect now thanks .

Can anyone tell me where the temp sensor is located that controls the temp gauge ?? , I replaced the temp sensor for the ECU but my guage does not work, I see the wire disconnected ( car has an aftermarket temp gauge I want to get rid of ) But cant find the sensor to hook up the wire to ? There is a plug in the top of the water pump, is this where that sensor is supposed
to be mounted ??

Thanks in advance for the help and advice

Steve

Temp sender for the gauge is located between the #1 and #3 spark plugs. If there is an aftermarket gauge in your car, you will need to remove it and put in a factory replacment sender.

Thought id throw this in there if your going to change that sensor make sure your car is cool. I did it right after i picked up the part boy does coolant get hot...

Thank you for the info, I see it now, I will get the new sensor tomorrow

Thanks again

Steve
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Yep I have learned that the hard way in the past :-) Thanks for the tip

Steve

Sorry to hi-jack this thread, but I have a related question. What does the sensor and the wire going to it that control the temp gauge look like? Anyone have a pic of one or both so I can try to track down the wire? I'm reinstalling my engine and can't find the darn sending unit or wire..

If you goto the number one spark plug, feel back about 2 or 3 inches. Its round and feels like a bolt, if the plug is off. Or you can stick a mirror(steal your girlfriends or moms make up mirror) under the exhaust manifold and see it quite easily. Its has a round brass plug on the end. I would like a picture of the plug, and the wiring harness it runs to, if anyone has that. I think mine may be cut off.

The plastic wire end on my original coolant temp sensor broke so I replaced it with a new sensor and wiring but it still doesn't work. I'm wondering if it's the wrong sensor to begin with. It's the one with the flat clip on the end rather than the other temp sensors that are double wired and look a little more "high tech". Any suggestions?
Thanks!

This is the one that feeds the guage: http://shop.advanceautoparts.com/web...S_575658306___

Dark Green wire to it. Maybe your guage is bad or there is a break in the dark green wire?

That's the one I replaced, with that same one. I noticed yesterday that the wires are a little 'charred' so maybe you're right and the wiring itself is bad.
If the gauge jumps to the top when I turn the key, is that an indicator that the gauge is ok?

Yeah, means the guage is moving - sounds like a bad wire.

guage pins at the top means that green wire is bare somewhere and is grounding out to metal you'll have to find that first and fix it usually under the exhaust somewhere it melts