Audi A4 B8 2013 overheating

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Frikki

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Hi there members. I have audi that I suspect the thermostat does not function properly. Had the vehicle running at idling till the engine temp reaches around 103 degrees. And it stayed on 103 degrees for some minutes before the bottom hose started picking up heat. At the same time radiator outlet sensor started climbing in degrees. When bottom pipe became hot fans came on. What bothers me is it normal to run at 103 for some time before fan kicks in. Secondly could some kind member please explain how exactly the electric waterpump works on this audi. And how does the thermostat function on this specific s4 with electric waterpump. Many thanks. Keep well.
 
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Uwe

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What indication do you have that it's over-heating?

Have you done a web search for the SSP for this engine?

-Uwe-
 
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Frikki

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Hi. Will confirm with customer. I did try and search the web. Can't seem to find self study program on this specific ific system. Will search some more. Thanks.
 
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Frikki

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Hi there according to the customer the heat gage went up. Over 90 degrees. We found no coolant leaks or anything. Is it normal for temp to run around 103 degrees.? Shouldn't thermostat start opening around 95degrees. Thanks uwe.
 
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Dukedesmo

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Not sure if of any help but I have a 2014 S4 and it runs at a steady 90 degrees on the gauge - Within a few minutes of startup it is at 90 and never goes above that regardless of how it's driven or the outside temperature.

Of course I'm in the UK not South Africa so it's not as hot but even with 30 degree + days (yes we get them sometimes!) it stays at 90 degrees...
 
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Frikki

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Not sure if of any help but I have a 2014 S4 and it runs at a steady 90 degrees on the gauge - Within a few minutes of startup it is at 90 and never goes above that regardless of how it's driven or the outside temperature.

Of course I'm in the UK not South Africa so it's not as hot but even with 30 degree + days (yes we get them sometimes!) it stays at 90 degrees...

Thanks friend. Is it possible to what car runs when hot and fans come on under live data vcds. Customer car for now stays at 90 on cluster. But vcds run at 103 degrees. I just need to confirm if I must change complete housing with waterpump. Could it be that maybe the thermostat got stuck that specific moment. Many thanks
 
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PetrolDave

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Customer car for now stays at 90 on cluster. But vcds run at 103 degrees.
That's typical behaviour of a VAG water temperature gauge - it will show 90 unless the actual water temperature is well over 90 (to avoid worrying customers is the official reason).

So unless someone knows otherwise it seems to me that 103 shown by VCDS is OK???
 
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Morski

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Any faults logged in vcds? If so could be an electric pump failure or if not maybe a sticking thermostat. You have not mentioned how many miles on the car.
 
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Frikki

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Not with vehicle rite now. Will let you know little later thanks
 
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Frikki

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Any faults logged in vcds? If so could be an electric pump failure or if not maybe a sticking thermostat. You have not mentioned how many miles on the car.

Code:
Wednesday,25,September,2019,11:18:29:62451
VCDS -- Windows Based VAG/VAS Emulator Running on Windows XP x86
VCDS Version: 18.9.1.0  HEX-V2 CB: 0.4437.4
Data version: 20190114 DS296.0
www.Ross-Tech.com


VIN: WAUZZZ8K7DA042864   License Plate: 



--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


                Address 01: Engine       Labels: 06L-906-264-CJE.clb
Control Module Part Number: 8K0 906 264     HW: 8K0 906 264 
  Component and/or Version: 1.8l R4 TFSI  H07 0008
           Software Coding: 0A190012242501022000
            Work Shop Code: WSC 06208 000 00000
              ASAM Dataset: EV_ECM18TFS0218K0906264 002007 (AU48)
                       ROD: EV_ECM18TFS0218K0906264.rod
                      VCID: 6E843ACB60183A477C1-803A
2 Faults Found:

17789 - Insufficient Engine Cooling / Coolant Flow 
          P00B7 00 [032] - -
          Intermittent - Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 147555 km
                    Date: 2019.09.19
                    Time: 21:39:16

                    Engine speed: 725.00 /min
                    Normed load value: 10.2 %
                    Vehicle speed: 1 km/h
                    Coolant temperature: 78 °C
                    Intake air temperature: 53 °C
                    Ambient air pressure: 1000 mbar
                    Voltage terminal 30: 13.945 V
                    Unlearning counter according OBD: 40
                    Engine: operating status: IS
                    Engine temp. management actuator: raw value: 2121
                    Engine temperature management actuator: stop open: 131
                    Engine temperature management actuator: after-run stop: 3962
                    RVC_SP: 4.00 °
                    RVC_AV: 132.45 °
                    RVCPWM: 0.000 %

16986 - Insufficient Engine Cooling / Coolant Flow 
          P00B7 00 [096] - -
          Intermittent - Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 147555 km
                    Date: 2019.09.19
                    Time: 21:39:13

                    Engine speed: 730.25 /min
                    Normed load value: 9.4 %
                    Vehicle speed: 2 km/h
                    Coolant temperature: 78 °C
                    Intake air temperature: 53 °C
                    Ambient air pressure: 1000 mbar
                    Voltage terminal 30: 13.867 V
                    Unlearning counter according OBD: 40
                    Engine: operating status: IS
                    Engine temp. management actuator: raw value: 2116
                    Engine temperature management actuator: stop open: 131
                    Engine temperature management actuator: after-run stop: 3962
                    RVC_SP: 129.25 °
                    RVC_AV: 132.13 °
                    RVCPWM: 13.062 %


Readiness: 0000 0000
 
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   #11  

Morski

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Research shows its a common fault on the VAG range, mainly the Golfs. New thermostat and or water pump solves the issues.
 
   #13  

Fredrick Awuor

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Code:
Wednesday,25,September,2019,11:18:29:62451
VCDS -- Windows Based VAG/VAS Emulator Running on Windows XP x86
VCDS Version: 18.9.1.0  HEX-V2 CB: 0.4437.4
Data version: 20190114 DS296.0
www.Ross-Tech.com


VIN: WAUZZZ8K7DA042864   License Plate: 



--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


                Address 01: Engine       Labels: 06L-906-264-CJE.clb
Control Module Part Number: 8K0 906 264     HW: 8K0 906 264 
  Component and/or Version: 1.8l R4 TFSI  H07 0008
           Software Coding: 0A190012242501022000
            Work Shop Code: WSC 06208 000 00000
              ASAM Dataset: EV_ECM18TFS0218K0906264 002007 (AU48)
                       ROD: EV_ECM18TFS0218K0906264.rod
                      VCID: 6E843ACB60183A477C1-803A
2 Faults Found:

17789 - Insufficient Engine Cooling / Coolant Flow 
          P00B7 00 [032] - -
          Intermittent - Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 147555 km
                    Date: 2019.09.19
                    Time: 21:39:16

                    Engine speed: 725.00 /min
                    Normed load value: 10.2 %
                    Vehicle speed: 1 km/h
                    Coolant temperature: 78 °C
                    Intake air temperature: 53 °C
                    Ambient air pressure: 1000 mbar
                    Voltage terminal 30: 13.945 V
                    Unlearning counter according OBD: 40
                    Engine: operating status: IS
                    Engine temp. management actuator: raw value: 2121
                    Engine temperature management actuator: stop open: 131
                    Engine temperature management actuator: after-run stop: 3962
                    RVC_SP: 4.00 °
                    RVC_AV: 132.45 °
                    RVCPWM: 0.000 %

16986 - Insufficient Engine Cooling / Coolant Flow 
          P00B7 00 [096] - -
          Intermittent - Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 147555 km
                    Date: 2019.09.19
                    Time: 21:39:13

                    Engine speed: 730.25 /min
                    Normed load value: 9.4 %
                    Vehicle speed: 2 km/h
                    Coolant temperature: 78 °C
                    Intake air temperature: 53 °C
                    Ambient air pressure: 1000 mbar
                    Voltage terminal 30: 13.867 V
                    Unlearning counter according OBD: 40
                    Engine: operating status: IS
                    Engine temp. management actuator: raw value: 2116
                    Engine temperature management actuator: stop open: 131
                    Engine temperature management actuator: after-run stop: 3962
                    RVC_SP: 129.25 °
                    RVC_AV: 132.13 °
                    RVCPWM: 13.062 %


Readiness: 0000 0000

Hello.. coolant pump on this EA888 gen3 CJEB is mechanical but integrated with electric engine temperature management module [thermostat]....so it is advisable to log coolant temperature at engine and radiator outlet as well as thermostat duty cycle in real time
with engine running to see how the thermo regulates temperature..... also check water pump weep hole for small leakage[ if any is found,replace the whole unit>>>that's thermo + water pump....cheap at ecstuning.com
 
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Frikki

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...and that's why we should always start with an autoscan. Special S4 you have here with a 1.8 TFSI ;)

Thanks. So you agree with morski that we should change complete housing with pump and thermostat to solve problem. Many thanks to all members.
 
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Uwe

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