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Old 01-12-2005, 01:02 PM   #21
KPatrick
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Default Re: Changing the ECTS Coolant Temp Sensor (with pictures)

Just curious why the replacement in the first place, what were the symptoms? I suspect mine being bad, 94 SC2. It misfires until the engine warms up. No codes and replaced the O2 sensor and EGR valve last year.
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Old 01-12-2005, 01:34 PM   #22
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Default Re: Changing the ECTS Coolant Temp Sensor (with pictures)

Quote:
Fm >> KPatrick <<

>Just curious why the replacement in the first place, what were the symptoms? <
Just do a search on ECTS and you'll come up with considerable & detailed information on it; for Saturn upgraded the unit, as the old ones were cracking, resulting in a mis-read being sent to the computer, with the engine running colder and using more fuel, due to the mis-read.
...
> 95 SL 2 = 653,369 Miles 40.4 MPG, as of 5/20/11. My manual Radiator Fan Switch, courtesy of Wolfman's patient installation guidance, continues to be.......invaluable < The car was retired
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Old 01-24-2005, 08:16 PM   #23
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Default Re: Changing the ECTS Coolant Temp Sensor (with pictures)

Hi all,

I read somewhere that after the sensor was changed that the PCM B fuse should be reset by pulling that out for about 15 seconds. Is that true? If so, that may be my problem! Thanks,

Jerry
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Old 01-24-2005, 08:22 PM   #24
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Default Re: Changing the ECTS Coolant Temp Sensor (with pictures)

Never heard this myself,but it could be true....
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Old 01-24-2005, 11:07 PM   #25
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Default Re: Changing the ECTS Coolant Temp Sensor (with pictures)

Quote:
Originally Posted by auxmike
Never heard this myself,but it could be true....
It's in wolfman's ECTS thread...

Quote:
Originally Posted by wolfman
You "should" reset the PCM after changing this (or ANY sensor) this does NOT require any special tools, just disconnect the NEG battery cable for about 15 secs.

Changing the ECTS (Engine Coolant Temp Sensor)
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Old 01-26-2005, 02:33 AM   #26
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Default Re: Changing the ECTS Coolant Temp Sensor (with pictures)

you can disconnect the NEG cable, but i perfer pulling the PCM B fuse, its easyier and you don't lose your radio presets.
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Old 01-26-2005, 02:13 PM   #27
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Default Re: Changing the ECTS Coolant Temp Sensor (with pictures)

Please forgive, as it sounds like it's super simple, but where and how do I go about pulling the PCM B fuse?

Thank you!
Ryan
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Old 01-26-2005, 03:06 PM   #28
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Default Re: Changing the ECTS Coolant Temp Sensor (with pictures)

Quote:
Fm >> Ryan <<

>where and how do I go about pulling the PCM B fuse? <
After opening up your front hood, there should be a black rectangular fuse box, located in front of the battery, on the driver's side. The top of the box should be secured by a small circular screw. Simply loosen it, and lift up the top of the fuse box. On the underside/inside of the top, you'll see where each of the fuses sit.
...
> 95 SL 2 = 653,369 Miles 40.4 MPG, as of 5/20/11. My manual Radiator Fan Switch, courtesy of Wolfman's patient installation guidance, continues to be.......invaluable < The car was retired
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Old 01-26-2005, 03:26 PM   #29
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Default Re: Changing the ECTS Coolant Temp Sensor (with pictures)

Thanks, Luke! So I just find it, take it out with my fingers, I'm guessing, and put it right back in?
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Old 01-26-2005, 03:58 PM   #30
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Default Re: Changing the ECTS Coolant Temp Sensor (with pictures)

Yep; I leave it out for atleast a "minute". Just to insure that the memory is cleared
...
> 95 SL 2 = 653,369 Miles 40.4 MPG, as of 5/20/11. My manual Radiator Fan Switch, courtesy of Wolfman's patient installation guidance, continues to be.......invaluable < The car was retired
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Old 01-29-2005, 10:31 PM   #31
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Default Re: Changing the ECTS Coolant Temp Sensor (with pictures)

Auxmike:

In the photo with the ratchet it shows one end of the connector (black cap cover) going to the sensor, where's the other end going? My 95 SW1 temp gauge isn't working. The photo with the part in the bag is exactly (with 2 butt connectors) what I bought from Saturn but they give me instructions.
Could you give me instructions (photos?) on how to install the connector.
Thank You very much.
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Old 01-29-2005, 11:21 PM   #32
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Default Re: Changing the ECTS Coolant Temp Sensor (with pictures)

Green,
You crimp the wires to the original wires from the cars harness.You heat up the butt connector's ends to shrink/seal them.
Hope this helps some.....
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Old 02-02-2005, 09:44 PM   #33
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Default Re: Changing the ECTS Coolant Temp Sensor (with pictures)

I installed the single wire temp gauge sensor connector. Now the temp gauge is working again. But the engine light remains on and the horn doesn't work. This happened after taking my 95 vehicle from tranny shop. The auto parts store only checks vehicles 96 or newer. Do I have to buy a scan tool that will only work on a 95 or older Saturn or GM car?
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Old 02-03-2005, 12:13 AM   #34
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1996 SW2
Default Re: Changing the ECTS Coolant Temp Sensor (with pictures)

Quote:
Originally Posted by green
The auto parts store only checks vehicles 96 or newer. Do I have to buy a scan tool that will only work on a 95 or older Saturn or GM car?
Lucky for you, NO. It's way easy with an OBD-1 ('95 and back) car. This how-to entry describes how to acquire the code with a paper clip, and even deciphers the codes.

That's why the store only does '96 and later; they're OBD-2, which require a scan tool.

BTW, since this is no longer really part of the "how to" for changing the ECTS, you might want to start a new thread in the regular "S-Series Tech" section.
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Old 02-06-2005, 11:44 AM   #35
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Thumbs Up Re: Changing the ECTS Coolant Temp Sensor (with pictures)

Wow is all that needs to be said about this post. Awesome. Thank you.
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Old 04-25-2005, 10:21 AM   #36
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Default Re: Changing the ECTS Coolant Temp Sensor (with pictures)

Where;d you guys buy yours? How much did you spend?
...
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- HIT! 96 Saturn SL2 - 172k miles - Fire Red
- SOLD 97 Saturn SL1 - 126k miles - Green/Brown Speckle
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Old 04-25-2005, 06:33 PM   #37
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Default Re: Changing the ECTS Coolant Temp Sensor (with pictures)

I got mine at Saturnparts.com. Less then $10 for the ECTS, but $8.50 for shipping. So I bought a Transmission Filter to split the shipping charge and reduce overall cost.
...
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Old 08-24-2005, 08:08 AM   #38
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Default Re: Changing the ECTS Coolant Temp Sensor (with pictures)

There is (was) a little cap that went over the electrical connector to my ECTS on my 97 SL2. I lost it, can't find it anywhere. Is this really necesary? It does cover the wires, but I have heard no mention of this cap anywhere. Would the dealership provide me with a new one, and for how much?
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Old 08-26-2005, 07:01 AM   #39
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Default Re: Changing the ECTS Coolant Temp Sensor (with pictures)

The pictures and explinations are outstanding! Thanks a million times.
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Old 08-26-2005, 08:24 AM   #40
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Default Re: Changing the ECTS Coolant Temp Sensor (with pictures)

Thanks all.
I never thought this would be so popular.
It was fun documenting the job.
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