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Title: can modfify cooling fan start temperature? Post by: tao13 on March 09, 2019, 10:44:05 AM Hi all.
Any body knows the map or addres for cooling fan temperature and speed? In FR i found MDLFS but i can not identify in ecu file. Many thanks in advance Title: Re: can modfify cooling fan start temperature? Post by: dal on March 09, 2019, 07:30:04 PM Your car is a...?
Title: Re: can modfify cooling fan start temperature? Post by: tao13 on March 09, 2019, 11:08:37 PM 1.8t skoda octavia , auq engine code , but works with BAM file from audi tt
Title: Re: can modfify cooling fan start temperature? Post by: dal on March 10, 2019, 06:03:53 AM You cant change this things on the ECU.
Your fan start temperature is controlled by this switch https://www.ecstuning.com/b-genuine-volkswagen-audi-parts/radiator-fan-switch-95-102c/1j0959481a/. It is located on the radiator. Is has 2 stages, the first activated on 95C and the second on 102C. The first stage turns on the fans on about half speed, and the second stage on full speed. Title: Re: can modfify cooling fan start temperature? Post by: BlackT on March 10, 2019, 06:57:50 AM You cant change this things on the ECU. 512 kb ECU have fan starting wia ECU pinYour fan start temperature is controlled by this switch https://www.ecstuning.com/b-genuine-volkswagen-audi-parts/radiator-fan-switch-95-102c/1j0959481a/. It is located on the radiator. Is has 2 stages, the first activated on 95C and the second on 102C. The first stage turns on the fans on about half speed, and the second stage on full speed. Title: Re: can modfify cooling fan start temperature? Post by: dal on March 10, 2019, 07:02:55 AM 512 kb ECU have fan starting wia ECU pin But his car is 1024kb wideband right? I'm almost sure his car dont have this. Title: Re: can modfify cooling fan start temperature? Post by: tao13 on March 10, 2019, 07:10:32 AM Correct my file is 1024kb.
I know my temperature sensor but i belived the start temeprature for fans is defined in the ecu file. Many thanks. Title: Re: can modfify cooling fan start temperature? Post by: Blazius on March 10, 2019, 07:25:03 AM It is an ME 7.5 I am pretty sure its ECU/AC relay activated. The connector for the aux fan runs directly to the ECU, near the power steering reservoir in longitudinal applications.
Title: Re: can modfify cooling fan start temperature? Post by: tao13 on March 10, 2019, 07:39:16 AM My question was if i can modify start value for fans directly in ecu file (map or scalar value)!
Thanks again Title: Re: can modfify cooling fan start temperature? Post by: dal on March 10, 2019, 10:56:00 AM No.
Its this boy that controls that. https://www.ecstuning.com/b-genuine-volkswagen-audi-parts/radiator-fan-switch-95-102c/1j0959481a/ Title: Re: can modfify cooling fan start temperature? Post by: tao13 on March 10, 2019, 11:58:44 AM ok
many thanks Title: Re: can modfify cooling fan start temperature? Post by: staffordshire on March 12, 2019, 11:08:25 AM ok many thanks I believe the ME 7.1.1 had maps to start/stop the cooling fan, Title: Re: can modfify cooling fan start temperature? Post by: nyet on March 12, 2019, 11:19:15 AM I believe the ME 7.1.1 had maps to start/stop the cooling fan, ME7.1.1 in the 2.7t (at least) does not have control over the fans, IIRC. Electric fans entirely controlled by the fan control module. Viscous fan clutch controlled by mechanical thermostat I could be wrong. Title: Re: can modfify cooling fan start temperature? Post by: tao13 on March 12, 2019, 11:23:13 AM It is gone to ecu directly i think it is controled by it
Like Blazius said Title: Re: can modfify cooling fan start temperature? Post by: dal on March 12, 2019, 12:07:16 PM Lets assume the ECU controls the fans start temperatures.
Why when the thermostat stucks in close position (happend to me once), no water flows, water start rising the temp, the coolant temp sensor reads temps high as 125 ºC, and no fan starts? Thats because with no water flow, no hot water comes in contact with the temperature switch located in the radiator. This thermo-switch located in the radiator, that has 2 temperatures stages, that controls the fans on/off. Title: Re: can modfify cooling fan start temperature? Post by: fknbrkn on March 12, 2019, 12:14:25 PM ecu can cut-off AC clutch via CDWGANG
i believe you are talking about this wire |