C5 V6 temperature gauge
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  1. #1
    Tadpole
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    Default C5 V6 temperature gauge

    The temperature gauge on my C5 V6 has stopped working, and the depol light stays on. The engine runs at normal temperature along with normal responsiveness and power. The problem is probably a faulty temperature sender, if not faulty electronics interfacing the gauge.
    My question is where is the sender measuring water temperature located? There is a sender on the coolant bottle along with a level sensor, but I would be surprised if that was the one sending information to the dashboard gauge. Any suggestions?

    Thanks, Richard

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  2. #2
    Tadpole
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    Hi Richard,
    Could you please give some more data for your C5? Is it petrol (3.0i V6) or diesel (3.0 HDI V6)?
    If your C5 has the following characteristics:
    C5 (X7) 4 DOOR SALOON 3.0i V6 24V 211 (ES9A)
    then have a look to the diagram below. The No 10 is the WATER TEMPERATURE SENSOR.
    If you have the HDI engine, then call me back.

    Good luck,
    Yiannis

    C5 V6 temperature gauge-c5-3.0i-v6.jpg

    23/07/11

    0610 02 1441 25A
    INJ CALCULATOR SENSOR



    01
    1942 XR

    01
    INJECTOR IGNITION CALCULATOR
    - PART TO BE CONFIGURED EXCEPT ARGENTINA EXCEPT (RA)
    1942 XS 01 - CONFIGURED PART AND VEHICLE IDENT NO (VIN) TO BE SPECIFIED ON ORDER EXCEPT ARGENTINA EXCEPT (RA)
    1944 35 01 - ARGENTINA AND PART TO BE CONFIGURED
    1944 36 01 - ARGENTINA AND CONFIGURED PART AND VEHICLE IDENT NO (VIN) TO BE SPECIFIED ON ORDER
    1944 37 01 - (RA) AND PART TO BE CONFIGURED
    1944 38 01 - (RA) AND CONFIGURED PART AND VEHICLE IDENT NO (VIN) TO BE SPECIFIED ON ORDER
    02
    1922 Q2

    01
    ELECTRONIC BOX BRACKET
    - BVA UNTIL RPO 11500
    1922 T7 01 - BVA SINCE RPO 11501
    08
    1920 EN

    01
    SPEED SENSOR
    DIAM 14X18
    NR- - BLACK
    - BVA
    09
    0382 L2

    01
    SHAFT SCREW
    M6X100-16
    - BVA
    10
    1338 A7
    RP 96 367 771 80

    01
    01
    WATER TEMPERATURE SENSOR
    M12X150 2 VOIES
    VE- - GREEN
    - BVA
    11
    4574 03

    01
    INTAKE AIR PRESSURE SENSOR
    - BVA
    12
    5946 30

    01
    ENGINE PINKING SENSOR
    LG 250
    FQA - GREEN
    - BVA
    5946 15 01 AV - 250MM
    VE- - GREEN
    - BVA
    13
    1920 AE

    02
    CAM POSITION SENSOR
    - BVA
    14
    0307 13

    02
    SCREW WITH BASE
    DIAM 6X100-18
    - BVA
    15
    1920 4G

    01
    AIR TEMPERATURE PROBE
    - BVA
    16
    1920 HE

    02
    TIMING CONTROL SOLENOID VALVE
    - BVA
    17
    0250 57

    02
    SCREW WITH BASE
    DIAM 6X100-20
    - BVA
    18
    1922 G3

    01
    SENSOR CONNECTOR SUPPORT
    - BVA
    70
    6555 N7

    02
    HOG RING
    6X12-0,7-4
    71
    6923 77
    RP 6923 H0

    01
    01
    SELF LOCKING SELF-TAP SCREWS
    DIAM 6X100-16
    72
    6925 61

    02
    SCREW WITH BASE
    DIAM 8X125-35
    73
    6925 P5

    01
    HEX HEAD TAPPING SCREW
    DIAM 6-18
    74
    6924 10

    02
    SCREW CBLX
    DIAM 4,5X20
    75
    6935 A6

    04
    NUT WITH BASE
    M6X100
    76
    7220 K6

    04
    BLANKING CAP
    DIAM 6-10

  3. #3
    Demannu-facturing! Demannu's Avatar
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    Default

    On the ES9J4S and ES9A engines, there is only one temperature sender, and it provides information to the engine ECU, cooling fan system and the instrument cluster. If your car is running normally, I very much doubt it is the sensor.

    Earlier ES94J engines had three separate sensors, and failures are common.
    Scotty

    Melbourne - Dandenong Ranges

    1956 Peugeot 403 - 'Francois' - resto project

    1969 Peugeot 504 - 'Pascal' - daily driver project

    1970 Peugeot 404 Utility - 'Brutus' - resto project

    1978 Peugeot 604 - as yet unnamed - V6 on straight LPG

    1987 Peugeot 505 - as yet unnamed - project car

    1999 Peugeot 406 Coupť - 'Chloe' - 5 speed manual

    2011 Peugeot 3008 XTE HDi - 'Zoe' - hatchback on steroids

    2014 Peugeot RCZ - 'Remy'

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  4. #4
    Tadpole
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    Thanks Yiannis and Scotty for your replies. The C5 is the revised headlight/taillight/interior 2005 4 door saloon (or 5 door hatchback if you count the tailgate as door), the engine is the petrol 3.0 litre 24 valve. I note the temperature sensor as number 10, but where is it located? On the side of the engine or radiator? A visual inspection to look for the sensor isn't obvious as to where it is. As to whether the engine is a ES9J4S or aa ES94J, I'm unable to tell. What I now note is the temperature gauge starts to rise then falls to zero on start, suggesting the instruments are ok, but the electric cooling fans on the radiator run, even after the ignition is switched off, and that happens on a short trip around the block. Checking the engine temperature after the car has stopped shows it to be acceptably cool with no sign of overheating at all, while the depollution light stays on when the car is being driven. Any suggestions?

  5. #5
    Demannu-facturing! Demannu's Avatar
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    The engine in that model will definitely be an ES9A, which is identical to the ES9J4S except for revised VVT actuators and ECU to give continuously variable VVT instead of the older 'on/off' type. To confirm, the VIN will contain 'XFZ' it if's the J4, 'XFX' if it's the J4S, and 'XFU' or 'XFV' if it's the ES9A. Anyway, that is irrelevant.

    The sensor is on the passenger side of the engine, on the pipe that joins the cylinder heads to the radiator. But I still very much doubt it is the cause of your problem.
    Scotty

    Melbourne - Dandenong Ranges

    1956 Peugeot 403 - 'Francois' - resto project

    1969 Peugeot 504 - 'Pascal' - daily driver project

    1970 Peugeot 404 Utility - 'Brutus' - resto project

    1978 Peugeot 604 - as yet unnamed - V6 on straight LPG

    1987 Peugeot 505 - as yet unnamed - project car

    1999 Peugeot 406 Coupť - 'Chloe' - 5 speed manual

    2011 Peugeot 3008 XTE HDi - 'Zoe' - hatchback on steroids

    2014 Peugeot RCZ - 'Remy'

    1999 Range Rover 4.6 HSE - 'Grover' - tow car

  6. #6
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    Quote Originally Posted by Richard N View Post
    Thanks Yiannis and Scotty for your replies. The C5 is the revised headlight/taillight/interior 2005 4 door saloon (or 5 door hatchback if you count the tailgate as door), the engine is the petrol 3.0 litre 24 valve. I note the temperature sensor as number 10, but where is it located? On the side of the engine or radiator? A visual inspection to look for the sensor isn't obvious as to where it is. As to whether the engine is a ES9J4S or aa ES94J, I'm unable to tell. What I now note is the temperature gauge starts to rise then falls to zero on start, suggesting the instruments are ok, but the electric cooling fans on the radiator run, even after the ignition is switched off, and that happens on a short trip around the block. Checking the engine temperature after the car has stopped shows it to be acceptably cool with no sign of overheating at all, while the depollution light stays on when the car is being driven. Any suggestions?
    HI Richard
    I am not familiar with that car but have an early 4cyl C5.
    A suggestion on the fault ! If the computer sees a fault in the temperature sensor it will default to a "safe" mode so it can continue and sets a fault light and stores a code. A typical safe mode would probably consist of turning the fans on all the time to prevent overheating no matter what.
    Perhaps a code reader would reveal the fault code stored.

    Good luck Jaahn

  7. #7
    Tadpole
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    Did you check the level of coolant?
    yiannis

  8. #8
    Tadpole
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    Yiannis, the coolant level is OK; besides, the coolant level sensor is functioning correctly. I am a professional electronic technician, and I do agree with Scotty's logic. With one sensor providing information to the ECU, cooling fan and instruments and the engine running as it should, the fault now needs to be traced with computer diagnostic equipment. It's gone beyond the point of probing around and besides, components are too expensive to replace by trial and error in the hope that the fault will be fixed.
    I do appreciate the feedback all of you have given on this, it is proof of just how valuable this forum is.

    Richard

  9. #9
    Tadpole
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    Final note. It WAS the temperature sensor. Agreeing with Scotty, I don't know how the engine was able to run normally, but it did.
    Thanks for your input on this.

    Richard.

  10. #10
    Contented Peugeot Driver addo's Avatar
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    It ignores the sender, and makes a best guess based on other sensors. Glad you've fixed it.

  11. #11
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    Quote Originally Posted by addo View Post
    It ignores the sender, and makes a best guess based on other sensors. Glad you've fixed it.
    Hi
    + 1 addo

    That's why it pays to be a bit careful with newer computerised car if they set a fault light, as they can often keep going with no obvious problem. The computer has several backup modes for smaller problems and then a limp home mode for larger ones.
    C5s however can be oversensitive and set fault lights without much going wrong at all. Crap software Not in this case however.
    jaahn

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