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#1
01-15-2007, 11:31 AM
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2001 Impala Ls
Hi everyone. I've done a search on this, and it seems a lot of people are having this same kind of problem. I would just like some insight as to what should be done.
Tomorrow I'm taking my friends Impala into the shot. 2001 LS with 3.8v6 Her fans run constantly, and the temp guage is always on cold. However the car blows hot air. I'm thinking im going to test out the ECT sensor, and probably replace it. My questions are, where is it located exactly..... (next to the throttle body on the thermostat housing on my 3100). Anything need to be removed first to gain access? Any gaskets I need to buy for these items (like a throttle body gasket? Any other things could e causing this?
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-2000 Grand Prix GTP 170,000mi (daily driver) -2000 Olds Alero 100,000mi (soon to be DD with gas at $3.45/gal) -1997 Chev K1500 4x4 115,000mi (Natalie's truck [nans_grandprix]) AF "2.0" Community Guidelines Conservative Victory 2012!!! "I'll Keep my Guns, Freedom, and Money. You can Keep the Change!" ----->>>>> Did You Know? <<<<<----- 
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#2
01-15-2007, 11:57 AM
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Re: 2001 Impala Ls
Quote:
Pointing down at a angle. No gasket required. http://members.troublecodes.net/crun...lantsenser.pdf
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Remember proper testing gives us the answer to many problems. MT
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#3
01-15-2007, 01:03 PM
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Re: 2001 Impala Ls
The ECT sensor is located about 3 inches below the thermostat housing. Looking in from the front that is the left front (driver's side) part of the engine and the left hand side of the lower intake manifold.
In most cases when the fans runs constantly the ECT sensor is putting out a low resistance value representing the engine is overheating when it probably is not. Also, an open wire between the ECT output and PCM module input will cause the fans to run. You can measure the ECT resistance with a digital multimeter to see if calibration is good based on temperature. Also, check the electrical connector to the ECT and make sure it is connected properly or re-seat. BTW - To remove the ECT it helps to remove the aluminum engine mount bracket for the left engine mount dogbone. Also, do not use plumber's tape on the ECT threads. 
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'08 Pontiac Grand Prix GXP (Dark Slate Metallic) - LS4 5.3L V8 '02 Oldsmobile Alero GL2 - LA1 3400 V6 '99 Buick Regal LS - L36 Series II 3800 V6 '03 Honda CR250R MX - 2 Stroke 250cc '97 Pontiac Grand Prix GTP - L67 Series II 3800 V6 Supercharged (Sold) Timeslip 08/12/06 AF Community Guidelines
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#4
01-15-2007, 10:31 PM
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Re: 2001 Impala Ls
ok thanks. She also wants me to replace the thermostat. Where is it located on the 3.8 exactly? Is it hard to get to?
__________________
-2000 Grand Prix GTP 170,000mi (daily driver) -2000 Olds Alero 100,000mi (soon to be DD with gas at $3.45/gal) -1997 Chev K1500 4x4 115,000mi (Natalie's truck [nans_grandprix]) AF "2.0" Community Guidelines Conservative Victory 2012!!! "I'll Keep my Guns, Freedom, and Money. You can Keep the Change!" ----->>>>> Did You Know? <<<<<-----
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#5
01-16-2007, 08:14 AM
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Re: 2001 Impala Ls
Quote:
Click here
__________________
'08 Pontiac Grand Prix GXP (Dark Slate Metallic) - LS4 5.3L V8 '02 Oldsmobile Alero GL2 - LA1 3400 V6 '99 Buick Regal LS - L36 Series II 3800 V6 '03 Honda CR250R MX - 2 Stroke 250cc '97 Pontiac Grand Prix GTP - L67 Series II 3800 V6 Supercharged (Sold) Timeslip 08/12/06 AF Community Guidelines
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