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zezerbing
New User
Jun 11, 2011, 1:22 PM
Post #1 of 6
(1642 views)
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we have a 95 chevy cavalier, We just bought it. It over heats because the radator fan doesn't turn. Now, We jumped the fan across the battery and it works. I replaced the sending unit in the thermostat housing. The relay "clicks", so i assume it's working.There is a fuse under the hood that is good.(not burned) If we keep the fan hooked to the battery, it doesn't over heat. I looked at other posts for answers. My question is,what are we missing. Is there another part in the system.The wiring looks good and stock. Thanks.
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Hammer Time
Ultimate Carjunky
/ Moderator
Jun 11, 2011, 2:04 PM
Post #2 of 6
(1636 views)
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Does the fan come on with the A/C?
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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zezerbing
New User
Jun 11, 2011, 4:08 PM
Post #3 of 6
(1628 views)
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Hello, The a/c doesn't work. The compressor doesn't turn. Being a new car, I don't know if it doesn't work because of a bad compressor, low refrig. etc. Are the two related?
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Hammer Time
Ultimate Carjunky
/ Moderator
Jun 11, 2011, 4:13 PM
Post #4 of 6
(1625 views)
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Not necessarily. The fan runs all the time with the A/C on so it would tell me if the fan circuit was operational. These fans don't come on until around 226 degrees so many people think there is a problem when there isn't.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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zezerbing
New User
Jun 11, 2011, 5:38 PM
Post #5 of 6
(1620 views)
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Ok, I looked at the gauge and it says 190* with a max of 226* so it's been running around 200*. So I'll keep an eye on it to see if it's normal. Thanks anyway.
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Hammer Time
Ultimate Carjunky
/ Moderator
Jun 11, 2011, 5:41 PM
Post #6 of 6
(1616 views)
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OPERATION
The fan normally operates when the engine coolant temperature exceeds 217°F, A/C is requested, and vehicle speed is greater than 35 mph. The cooling fan will also run if regardless of vehicle speed if coolant temperature exceeds 224°F, any diagnostic trouble code is set or A/C refrigerant pressure is high. If the PCM is in back-up mode then the cooling fan will run. The cooling fan will run-on up to seven minutes after ignition switch is turned to Off position if engine coolant temperature is greater than 212°F and intake air temperature is greater than 176°F.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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