Overheating
06-30-2009, 04:37 AM
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Hi I recently bought a 2005 530i I'm suspecting that the radiator fan that cool the system down is not working properly
i had the thermostat sensor and temperature sensor replaced. but the car keep overheating.
I'm driving with the A/C on all the time because that will turn the fan on, if I turn the A/C off and keep driving whenever I turn the engine off
I don't see any signs off that fan working on to cool the engine down. I'm thinking that my overheat issue is related with that fan not activating properly during the driving period.
Anyone knows what that could be??? or how can I really diagnoses the fan.
Thanks
i had the thermostat sensor and temperature sensor replaced. but the car keep overheating.
I'm driving with the A/C on all the time because that will turn the fan on, if I turn the A/C off and keep driving whenever I turn the engine off
I don't see any signs off that fan working on to cool the engine down. I'm thinking that my overheat issue is related with that fan not activating properly during the driving period.
Anyone knows what that could be??? or how can I really diagnoses the fan.
Thanks
06-30-2009, 04:48 AM
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My Ride: 2008 535i:
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Do you have one or two radiator fans in your car?
If the fan(s) run while the A/C is on then the fan itself is not the problem. Its most likely a temperature switch that is either bad or not connected.
You could rewire the fan so that it stays on all the time - otherwise you are going to have to trace the wires to locate the switch. GL
If the fan(s) run while the A/C is on then the fan itself is not the problem. Its most likely a temperature switch that is either bad or not connected.
You could rewire the fan so that it stays on all the time - otherwise you are going to have to trace the wires to locate the switch. GL
06-30-2009, 04:56 AM
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Originally Posted by pukka' post='928457' date='Jun 30 2009, 08:48 AM
Do you have one or two radiator fans in your car?
If the fan(s) run while the A/C is on then the fan itself is not the problem. Its most likely a temperature switch that is either bad or not connected.
You could rewire the fan so that it stays on all the time - otherwise you are going to have to trace the wires to locate the switch. GL
If the fan(s) run while the A/C is on then the fan itself is not the problem. Its most likely a temperature switch that is either bad or not connected.
You could rewire the fan so that it stays on all the time - otherwise you are going to have to trace the wires to locate the switch. GL
in the left down hose right??
06-30-2009, 05:33 AM
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My Ride: 2008 535i:
(8/07 Build) Metallic Bronze, Beige NASCA Leather, Ventilated Seats, Sport Pkg, Cold Wxr Pkg, Logic-7 Sound, HUD, Night Vision, PDC, Split Rear Seats, NAV, Premium Pkg, Comfort Access, HD Radio, Sport Auto Trans
Current mods: M-Aero Kit, JB4, Motorcepts 6000k HID Foglamps
Umnitza ICE-Lite 10w LED 6000k AE's
1992 Camaro RS:
Fully Restored w/Custom Interior, 5.0L V8, T-tops, OEM Z28 Foglamps, Inst Cluster, & Spoiler, Custom Sound, Too many engine mods to list
Originally Posted by jaireco' post='928465' date='Jun 30 2009, 08:56 AM
my car has only 1 fan... I replaced this temperature switch. It's located
in the left down hose right??
in the left down hose right??
06-30-2009, 05:55 AM
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Originally Posted by jaireco' post='928445' date='Jun 30 2009, 08:37 AM
Hi I recently bought a 2005 530i I'm suspecting that the radiator fan that cool the system down is not working properly
i had the thermostat sensor and temperature sensor replaced. but the car keep overheating.
I'm driving with the A/C on all the time because that will turn the fan on, if I turn the A/C off and keep driving whenever I turn the engine off
I don't see any signs off that fan working on to cool the engine down. I'm thinking that my overheat issue is related with that fan not activating properly during the driving period.
Anyone knows what that could be??? or how can I really diagnoses the fan.
Thanks
i had the thermostat sensor and temperature sensor replaced. but the car keep overheating.
I'm driving with the A/C on all the time because that will turn the fan on, if I turn the A/C off and keep driving whenever I turn the engine off
I don't see any signs off that fan working on to cool the engine down. I'm thinking that my overheat issue is related with that fan not activating properly during the driving period.
Anyone knows what that could be??? or how can I really diagnoses the fan.
Thanks
IMHO, if you don't get it figured out with the first go, you may be spending more money replacing good parts than you're trying to save by avoiding a real diagnosis.
BTW, the last time I went thru this exercise with an Audi TurboQuatro it was a resister block that permitted multiple fan speeds. That was hidden away on a frame rail far from the radiator/fan!
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