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Skoda tdi running hot

  • 28-09-2012 7:50pm
    #1
    working fool
    Registered Users, Registered Users 2 Posts: 813 ✭✭✭


    Just noticed my 1.9 tdi is running a little hot when driving .
    Temp gauge is normally at 90 all the time but lately it's going up to 100 sometimes while driving .
    Heater is working perfect and turning on the blower will bring the temp down pretty fast .
    Top of the radiator is hot and the bottom is cold .
    I'm thinking the thermostat is faulty but while looking up forums they say that they can't stick closed .
    It a 2002 model and the water pump was changed with the belt about 30k ago .

    Any suggestions would be most helpful


Comments

  • #2
    Nissan doctor
    Closed Accounts Posts: 8,223 ✭✭✭Nissan doctor


    working fool wrote: »
    Just noticed my 1.9 tdi is running a little hot when driving .
    Temp gauge is normally at 90 all the time but lately it's going up to 100 sometimes while driving .
    Heater is working perfect and turning on the blower will bring the temp down pretty fast .
    Top of the radiator is hot and the bottom is cold .
    I'm thinking the thermostat is faulty but while looking up forums they say that they can't stick closed .
    It a 2002 model and the water pump was changed with the belt about 30k ago .

    Any suggestions would be most helpful


    They certainly can and do stick closed. Its a more common failure then sticking open as the spring will push them closed.


  • #3
    working fool
    Registered Users, Registered Users 2 Posts: 813 ✭✭✭working fool


    Thanks for the info .
    I'll take it out and test it tomorrow .
    Done some more research and it seems the water pump has a plastic impeller that fails on them too
    Had that happen with a BMW 318 a few years ago .


  • #4
    George Dalton
    Registered Users, Registered Users 2 Posts: 5,728 ✭✭✭George Dalton


    When you have the thermostat out you can easily check the water pump impeller through the hole that the stat sits in.


  • #5
    working fool
    Registered Users, Registered Users 2 Posts: 813 ✭✭✭working fool


    George Dalton wrote: »
    When you have the thermostat out you can easily check the water pump impeller through the hole that the stat sits in.

    Lovely stuff thankyou .
    Cheaked it out there and it's just 2 bolts between the diesel pump and the alternator to cheak both parts


  • #6
    working fool
    Registered Users, Registered Users 2 Posts: 813 ✭✭✭working fool


    A wee update
    Took off the return pipe from the header tank and water is circulating .
    Removed the thermostat and the weather pump seems fine .
    Tested the thermostat in a pan of boiling water and it doesn't open


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  • #7
    Mycroft H
    Registered Users, Registered Users 2 Posts: 9,313 ✭✭✭Mycroft H


    working fool wrote: »
    A wee update
    Took off the return pipe from the header tank and water is circulating .
    Removed the thermostat and the weather pump seems fine .
    Tested the thermostat in a pan of boiling water and it doesn't open

    You've a cheap fix then, nice one.


  • #8
    working fool
    Registered Users, Registered Users 2 Posts: 813 ✭✭✭working fool


    BX 19 wrote: »
    working fool wrote: »
    A wee update
    Took off the return pipe from the header tank and water is circulating .
    Removed the thermostat and the weather pump seems fine .
    Tested the thermostat in a pan of boiling water and it doesn't open

    You've a cheap fix then, nice one.

    Yeah thank god
    Wasent looking forward to digging out the cam belt locking kit and stripping all the Belt covers .
    Think ill flush the system while I'm at it .


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