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Thread: astra problem

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    derek12345's Avatar
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    astra problem

    i bought a 51 plate astra just over 2 weeks ago never went anywhere far just work and back decided to go for a run last weekend after about 40 miles the engine managagement light came on i carried on but kept an eye on it and noticed my temperature gauge was not moving only went up if i was still in traffic or at lights etc then when car was moving it went to zero i stopped at my destination and left car to cool for a few hours (although it wasnt overheating) when i started car up engine management light had gone off but all the way home tempeature gauge still not moving i went back to garage i got car from they are not interested so i changed engine coolant temperature sensor still the same so i argued with garage it must have some warranty so they agreed and had thermostat changed but didnt change cambelt it still didnt fix problem so they decided to change water pump but still put old cambelt back on anyway car still has same problem but now engine management light back on any ideas what it could be

    thanx for looking



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    Re: astra problem

    are the fans kicking in straight away when you start the car ?

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    charlie senator's Avatar
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    Re: astra problem

    Could be the EGR valve mate a common problem on these cars. Not related to the temp though but if its not overheating i would worry about the egr ( exhaust gas recycling valve ) first and then the temp problem
    who was the first person to say,"See that chicken there....Im gonna eat the next thing that comes outta its bum"

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    Re: astra problem

    are the fans kicking in straight away when you start the car
    no but if i sit stationairy and let the car tick over temperature gauge goes up and fans kick in

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    derek12345's Avatar
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    Re: astra problem

    Could be the EGR valve mate a common problem on these cars. Not related to the temp though but if its not overheating i would worry about the egr ( exhaust gas recycling valve ) first and then the temp problem
    where would you reccomend i take it charlie as i live in corby too

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    Re: astra problem

    sounds like temp transmitter wiring shorted to earth
    ANT CHANCE OF AN ENGINE CODE ?
    see how wiring is set up

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    Re: astra problem

    where would i get that from horus

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    Re: astra problem

    if the stat was faulty and not closing water would keep flowing around giving no chance to heat up,when stopped it would move a little and when moving drop down again,maybe use a good fuel cleaner in petrol tank as carbon does effect the egr valve,also check you are using the correct grade of oil as newer
    one use low ash oil which reduces carbon.

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    Re: astra problem

    You need the code that the engine management is giving.

    Problem is you need a reader to get it. If none of your mates have one, you can get a cheap one from ebay, you need an ELM 327 interface, it connects to your car, and a pc. Laptop is best, as you can take the laptop to the car. other wise you might need a very long usb cable, with a few repeaters. You can also get dedicated ones from places like Halfords.

    Other problem is, I was fixing a 53 plate last week, and for some reason, my interface would not work with the car. It said that it could not read the protocol, which could mean, that the astras are not fully OBD compliant.

    You would then need to get to a stealer to get the code, I believe about 45.

    If you can get the code, I can tell you what it means. which will more or less tell you the fault.

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    Re: astra problem

    is this car an 8 valve ?
    if so engine code should be on your v5 (reg document)
    these 8 valve astra g cars are known for the cooling system and the stat if not fitted causes no end of problems
    try getting someone to have a look over it easier than trying to google the fault
    also i think your car should be eobd compliant but some fail on pin 7 for some reason
    maybe someone here is close and has a decent scanner vaux com or op com ?

    the engine code matters as it could be either 8 valve or 16 valve
    due to some having temp transmitter in the head and cooling fan switch in the radiator sone are switched via the ecu
    and have a coolant control module in the os inner wing
    try find some details then i can maybe provide a few pointers
    it sounds like an x16szr 8v unit but have a look
    meanwhile heres somic to check for codes hope it helps
    http://www.vauxhallownersnetwork.co....ng-fault-codes


    Last edited by HORUS; 2nd April 2011 at 19:44.

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