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How to fix my temp. gauge???
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Firstymer



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PostPosted: Tue Jan 15, 2008 2:25 pm    Post subject: How to fix my temp. gauge??? Reply with quote

I find it hard to believe that I cannot determine the temperature of my car engine because the temperature gauge on the dash does not work. So I need to know how to fix the problem that exist. Do anyone have an idea of the procedure and what part(s) I need?

00' GP SE v6 3.1L Vin "J"
122570+KM

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Larry
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PostPosted: Wed Jan 16, 2008 9:19 pm    Post subject: Temp Gauge Reply with quote

It is pretty rare that a gauge actually ceases to function. It is uaually the sending unit. But first be sure to check the connections.

That being said, if this is an '00 model, there are other factors that could be at play here, being a "computer car".

Have you had a diagnostic run (ie: hooked up to a computer) to see if a code is shown?

Let us know what has been done so far to try to isolate the problem.
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Firstymer



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PostPosted: Thu Jan 17, 2008 11:08 am    Post subject: Reply with quote

Thanks for the reply, well nothing hasn't been done to isolate the problem. However, I received the code P0650-MIL Control Circuit Malfunction

MIL is Malfunction Indicator Lamp meaning the SES/CEL light circuits. but to my knowledge only ABS light remains on while car is on. I was told it could be the coolant sensor.

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Larry
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PostPosted: Thu Jan 17, 2008 12:27 pm    Post subject: Temp Question Reply with quote

I would suggest trying to replace the coolant sensor as I mentioned at first ("sending unit"). They are usually the problem. Try starting with the simplest item before thinking about tearing into the more complicated things.

Let us know what you do as you chase this problem.
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Firstymer



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PostPosted: Thu Jan 17, 2008 2:10 pm    Post subject: Reply with quote

Where can I find the coolant sensor on the engine and how can I go about replacing it? Do you have any detail photo of the engine component?
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Firstymer



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PostPosted: Fri Jan 18, 2008 2:35 pm    Post subject: Reply with quote

Yeah whats up with the picture...that supposed to be a joke...do you have any description on what the coolant sensor look like and where it can be found on the engine?
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Firstymer



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PostPosted: Fri Jan 18, 2008 5:37 pm    Post subject: Reply with quote

Yeah I notice some Coolant loss in the resvoir but not leaking onto the floor.
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Larry
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PostPosted: Sun Jan 20, 2008 7:04 pm    Post subject: Sensor Location Reply with quote

I have been doing some checking and the closest I can find (for now) is some GP info from a 1985 manual. It is for the 3.8 V-6 engine.

One point they make about the gage is to be certain that all contacts are clean and tight at the gage. They also mention a good ground at the gage.

Attached is a drawing showing the sensor location on the 3.8. It may be the same as your 3.1. If not, it should still help you in identifying the sending unit (sending unit, sensor, switch... all the same, just called differently).
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Firstymer



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PostPosted: Tue Jan 22, 2008 9:21 am    Post subject: Reply with quote

Thanks for the pic...I will make certain I look under the hood today! Do you have the procedure in replacing it?
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Larry
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PostPosted: Tue Jan 22, 2008 1:24 pm    Post subject: Sensor Replacement Reply with quote

They simply unscrew and screw in a new one. Just a big pipe thread.
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Firstymer



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PostPosted: Tue Jan 22, 2008 1:41 pm    Post subject: Reply with quote

Thanks for the reply! I was told before that coolant may pour out when unscrew.
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PostPosted: Tue Jan 22, 2008 6:04 pm    Post subject: Sensor Replacement Reply with quote

If you are wondering if you have the right sensor, the flood of coolant would actually be a good sign. Oil= not good! Coolant= good.

It would, of course, be a good idea to drain the radiator at least down to the level of the sensor location. Be sure to do when cool.
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PostPosted: Wed Jan 23, 2008 9:16 am    Post subject: Reply with quote

Alright thank...I'll make certain!
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