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Thread: Thermostat quick fix?

  1. #1
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    Default Thermostat quick fix?

    My 1.8 isn't heating up properly, even with a bit of cardboard in front of the radiator.

    I'm assuming my thermostat is jammed wide open.

    I know it's an easy job to replace it, but I really don't fancy doing it when it's -5 outside...

    I was wondering if I could put a clamp on the radiator inlet hose to restrict flow. Would this work? Would the restricted coolant flow back round the engine, or would the pressure just build up?

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    Does a new head gasket or a blown pipe appeal to you?

    You know the fault fix it or you will cause more faults.

    Take it to a nice warm garage and get your wallet out and pay the nice man to fix the thermostat or do it yourself in the -5 and save loads of beer money.

    No easy way of putting it really.

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    Thanks for the answer,

    but would a "blocked" rad inlet pipe really cause pressure to build up enough to blow the head gasket?

    I'm not gonna take the chance, would rather live with a cold car until I get the stat replaced, but I'm curious!

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    I am quite surprised that your 1.8 is not warming up with part of the rad blocked off,,this time last year my stat stuck open so I blocked two thirds of the rad off with hard card and held it in place with a rolled up rubber car mat,, it worked quite well,( I had to trim the card a couple of times) had to give it some gas when first rolling to get temp up AND keep my eye on the temp guage, if it got to hot in traffic used to put heater on full blast, but with heater on 2 temp stayed on 85 ish, try a different piece of card the one you are using might be letting to much air through.

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    think about the damage you might be doing to the engine?

    I ran my 1.8 for nearly 9 months with a knackered thermostat because i thought it was normal for these cars to run cool. I only changed it when i was freezing in the winter. Luckily the motor seems fine.

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    Vehicle : Vectra

    Trim : Design

    Engine : 1.8 VVT

    Year : 2007

    Mileage : lots !

    Default

    The only possible emergency repair I can think of would be a perforated restrictor plate in place of a thermostat - but that would be more work than replacing it !

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    Regular Member ChrisBilly's Avatar
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    I've had to mine 3 times in the last month because the instant gasket I had leaked (and has now blocked my heater matrix), but the jobs not too bad, even in the cold really, once you get going.
    Use the instant gasket linked in the How2, the blue stuff I first used is s***e.

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    Regular Member Das's Avatar
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    Vehicle : Lada

    Trim : Riva

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    Year : 1954

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    As Chris says its an easy job, if you fore go the coolant change id say is a half hour job. You don't even really need to take the top hose off, I only did that for photographic purposes. Run the engine for 5 minutes before doing the job and there will be enough heat to take the chill off.
    Chris sorry to hear about the gasket stuff, I used Nissan stuff, expensive but sets almost instantly.

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    Quote Originally Posted by DasArab View Post
    As Chris says its an easy job, if you fore go the coolant change id say is a half hour job. You don't even really need to take the top hose off, I only did that for photographic purposes. Run the engine for 5 minutes before doing the job and there will be enough heat to take the chill off.
    Chris sorry to hear about the gasket stuff, I used Nissan stuff, expensive but sets almost instantly.
    Was that the red stuff if so yes it's the dog's hooter used to work for nissan and this was used for sumps were no gasket was fitted.

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    I got to say, I have a 1.9Cdti Signum, and I have been driving it with the temp uage going from nothing to about 80, then back down again. Seemed like the cabin was warm though.

    Decided to get a new thermostat for it, and (what abeehatch to fit!) its much better now. Sits between 80 and 85 all the time once warm.

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