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12-12-2013, 03:01 PM
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#1
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13 Second Club
Join Date: Aug 2006
Location: Edison, NJ
Posts: 887
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Fans wont turn on
I have a 2003 Chevy Malibu that I am having problems getting the fans to turn on. All the relays and fuses are good and I can turn the fan on using the OBD 2 Computers. But they will not turn on by themselves when the engine gets to temperture. Temp Switch has be changed, new water pump and thermostat. I am stumped any suggestions?
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12-12-2013, 03:12 PM
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#2
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Join Date: Feb 2005
Location: west orange nj
Posts: 2,415
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Did you run a power switch to see if the fan is good did you all so check the relay
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12-12-2013, 03:35 PM
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#3
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Admin.
Join Date: Aug 2005
Location: Hamilton, NJ
Posts: 20,153
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Quote:
Originally Posted by firebirdcrazy
I have a 2003 Chevy Malibu that I am having problems getting the fans to turn on. All the relays and fuses are good and I can turn the fan on using the OBD 2 Computers. But they will not turn on by themselves when the engine gets to temperture. Temp Switch has be changed, new water pump and thermostat. I am stumped any suggestions?
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what do you mean you can turn the fan on using the OBD 2 Computers?
__________________
Vent Windows Forever!
The looser the waistband, the deeper the quicksand. Or so I have read.
Feather-light suspension, Konis just couldn't hold. I'm so glad I took a look inside your showroom doors.
Hey everybody, it's good to have you on the Baba-too-da-ba-too-ba-ba-buh-doo-ga-ga-bop-a-dop
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12-12-2013, 03:35 PM
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#4
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Ebearnezer Scrooge/Power Member/Lips
Join Date: May 2006
Location: Hamilton, Mercer county
Posts: 4,141
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Does the ECM see the temperature of the engine? Just because you replace a part does not mean the part is good or is working.
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12-12-2013, 05:07 PM
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#5
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Join Date: Sep 2008
Location: Hackettstown, NJ
Posts: 1,648
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^^What bear said. What does a scantool show the coolant temperature as?
__________________
1998 Z-28 - SLP lid - Ported TB - LS6 Intake - Dynatech SS headers/Catted Y - Magnaflow Exh - 3.42 - Yank SS3600 - UMI weld-in subframe connectors, Adj LCA, Adj PHB, Q1A TA - Bolt-in Relocation Brackets - Strano springs - Koni shocks - 17" C6Z06 wheels - 326HP/335ft-lbs - 12.35 @ 110.41
Quote:
Originally Posted by Blackbirdws6
I can appreciate a dream but this person needed some real friends.
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12-12-2013, 05:14 PM
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#6
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Join Date: May 2010
Location: Brick, NJ
Posts: 1,868
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Did you disconnect the battery when you changed the sensor?
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Formerly known as blk95formula
86t/a_ram_air on TGO
2018 Silverado 1500
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12-12-2013, 05:37 PM
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#7
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13 Second Club
Join Date: Aug 2006
Location: Edison, NJ
Posts: 887
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All the relays and fuses are good. Using the scanner I was able to turn on the fans at all speeds. The Car had overheated due to a leaking water pump so I am not sure if this car has some kind of safe mode Feature. Im thinking a problem with the ECM
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12-12-2013, 05:39 PM
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#8
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Admin.
Join Date: Aug 2005
Location: Hamilton, NJ
Posts: 20,153
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does the ecm read the cts temp correctly?
__________________
Vent Windows Forever!
The looser the waistband, the deeper the quicksand. Or so I have read.
Feather-light suspension, Konis just couldn't hold. I'm so glad I took a look inside your showroom doors.
Hey everybody, it's good to have you on the Baba-too-da-ba-too-ba-ba-buh-doo-ga-ga-bop-a-dop
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12-12-2013, 06:29 PM
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#9
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13 Second Club
Join Date: Aug 2006
Location: Edison, NJ
Posts: 887
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Quote:
Originally Posted by BonzoHansen
does the ecm read the cts temp correctly?
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how do you mean?
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12-12-2013, 06:39 PM
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#10
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13 Second Club
Join Date: Aug 2006
Location: Edison, NJ
Posts: 887
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Your right the gauge is up at 205 degrees but the scanner is at 95 degrees, Whats going on with this?
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12-12-2013, 07:02 PM
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#11
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13 Second Club
Join Date: Aug 2006
Location: Edison, NJ
Posts: 887
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I reset the ECM and BCM seems like its working now geez. The most stupid things cause the biggest problems!!
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