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#1
03-28-2009, 09:33 PM
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Need Schematic for 94 TA cooling fans
Anybody have a schematic of a 94 TA 5.7L that shows the wiring of the cooling fans?
Fans wont come on at all and it overheats. If I pull the plug on the MAP sensor, it stumbles for a second, goes into safe mode and then the fans come on. Just hope its not a computer problem. Temperature gauge works fine. Thanks, Jack.
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 TigerEFI.com (Classic Pontiac Fuel Injection) 2004 GTO Company car, 1994 TA 25th Anv, 1971 Grand Safari Wagon, 1968 GTO EFI, 1968 GTO Stock, 1968 GTO Convertible in desperate need of restoration. |
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#2
03-29-2009, 04:11 PM
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Early production used 2 relays, late used 3.
Both are for a/c equipped models. Last edited by Andretti; 05-03-2010 at 10:04 PM. |
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#3
03-29-2009, 04:22 PM
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The guage uses it's own sensor not related to the fan operation. The ECM monitors the "Coolant Temperature Sensor" to control fan speed. If you don't have a scanner to read the CTS you can check the fans circuit/relay operation by opening then jumping the CTS harness at the switch.
The sensor uses two wires, 1 yellow, 1 black. |
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#4
04-04-2009, 04:53 PM
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Thanks all. I will let you know what i find.
__________________
TigerEFI.com (Classic Pontiac Fuel Injection) 2004 GTO Company car, 1994 TA 25th Anv, 1971 Grand Safari Wagon, 1968 GTO EFI, 1968 GTO Stock, 1968 GTO Convertible in desperate need of restoration. |
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